Owners have filed 582 complaints
about the 2023 GMC Sierra 1500 with NHTSA between 2023 and 2026.
The largest single group is the engine & cooling.
Across this model's run it ranks 7 of 31 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 80
Against the median year of the GMC Sierra 1500. 50 means typical for this
model; 100 means roughly double.
Severity — 12
2.4% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 100
74% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
How 2023 compares with every other GMC Sierra 1500
NHTSA files every complaint against a named sub-assembly, not just a
system. This is the difference between knowing it was "the engine" and
knowing which part of it — the list to hand a mechanic.
Body
6773.6%
Automatic Emergency Braking
66.6%
Adaptive Cruise Control
66.6%
Assist
33.3%
Latch
33.3%
Exterior Trim
22.2%
Warnings
22.2%
Blind Spot Detection
22.2%
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
36.0%
1,000 – 9,999 miles
1326.0%
10,000 – 24,999 miles
1224.0%
25,000 – 49,999 miles
1224.0%
50,000 – 74,999 miles
714.0%
75,000 – 99,999 miles
24.0%
100,000 – 149,999 miles
12.0%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Feb 2023peak 44Aug 2026
NHTSA investigations into the 2023 GMC Sierra 1500
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
2
investigations are
still open.
EA26005Opened 20 Aug 2026Still openENGINE
Loss of motive power due to engine failure post recall remedy
On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001. This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s reca...
EA25007Opened 23 Oct 2025Still openENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
Loss of motive power due to engine failure
The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274. These engines are installed in Model Years (MY) 2019–2024 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2021-2024MY Chevrolet Suburban and Tahoe, GMC Yukon/Yukon XL, and Cadillac Escalade/Escalade ESV vehicles. The subject engine failures were investigated as part of a Preliminary Evaluation (PE25001). GM determined that these engine failures were due to...
RQ26001Opened 16 Jan 2026Closed 20 Aug 2026ENGINE
Loss of motive power due to engine failure post recall remedy
On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001. This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s reca...
PE25001Opened 16 Jan 2025Closed 23 Oct 2025ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
Loss of motive power due to engine failure
On January 16, 2025, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE25001 after receiving complaints and field reports concerning engine failures in MY2019-2024 GM’s full-size truck and SUV T1XX platform equipped with the L87 6.2L V8 engine. These complainants alleged engine bearing failures resulting in knocking and growling noises from the engine’s bottom end and in some cases more severe consequences such as broken connecting rods leading to engine damage, or engine failure. If the engine fails during vehicle operation, the vehicle will lose propulsion, increasing...
Recalls on the 2023 GMC Sierra 1500
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
United States — NHTSA
25V274000
ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6.2L V8 gas engine. The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
Risk: Engine failure increases the risk of a crash.
24V674000
SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING: LAMP
General Motors, LLC (GM) is recalling certain 2023 Chevrolet Silverado 1500, GMC Sierra 1500, 2023-2024 Chevrolet Tahoe, Suburban, GMC Yukon, Yukon XL, Cadillac Escalade, and Escalade ESV vehicles. The electronic brake control module software may fail to display a warning light when a loss of brake fluid occurs. As such, these vehicles fail to comply with the requirements of Federal Vehicle Safety Standard number 135, "Light Vehicle Brake Systems."
Risk: Without a warning light, the vehicle may be driven with low brake fluid, which can reduce braking performance and increase the risk of a crash.
22V903000
EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The daytime running lights (DRLs) may not deactivate when the headlights are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: DRLs that do not deactivate as intended may result in a glare, reducing visibility, and increasing the risk of a crash.
Reports where the owner recorded a crash, a fire, an injury or a death.
at 12,000 milesLas Vegas, NV2 injured
ELECTRICAL SYSTEM
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed on several occasions, the pedestrian warning alert unexpectedly illuminated. The contact stated that during the failure, the braking system became inoperable and then the brakes locked up, causing the contact and a passenger to suffer whiplash. The contact stated that there were no pedestrians near the vehicle when the failure had occurred. Additionally, the contact stated that while attempting to reverse, the pedestrian detection system failed to display a warning when a pedestrian was near the vehicle, almost causing the vehicle to strike the pedestrian. The vehicle was taken to the dealer, where the contact was informed that the failure was related to an electrical anomaly and a hardware failure. The contact was advised that an over-the-air update might be issued to address the issue. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 12,000.
NHTSA complaint #11734337 — an unverified report by a vehicle owner.
Merritt Island, FLCrash
POWER TRAIN
The vehicle has experienced repeated incidents of sudden reduced engine power and loss of acceleration while driving. On multiple occasions, while traveling at highway speeds, the vehicle failed to respond normally to throttle input and would not accelerate as commanded and loss of power steering making it difficult to turn the steering wheel and apply brakes. One incident resulted in throwing my truck off the road and luckily we nearly avoided a multi car collision and potential pile with my wife, 8yr old daughter and newborn son in the vehicle at high speeds up to 60/70+ mph but despite avoiding a major life threatening accident to us and other drivers, resulted in striking objects, glass and debris on the side of the road causing damage to my vehicle and then sliding to a complete stop in the ditch off the highway. This creates a hazardous driving situation, particularly when merging into traffic or attempting to maintain speed with surrounding vehicles, increasing the risk of collision. The malfunction appears related to the engine, electrical system, and powertrain. During at least one dealership visit, the reduced power condition was recreated and confirmed by service personnel. However, despite multiple warranty repair attempts, the issue continues to reoccur intermittently. Warning messages have appeared at times, including reduced engine power notifications and check engine indicators, though the condition has also occurred without advance warning. The intermittent nature of the defect makes it unpredictable and unsafe. The vehicle has been out of service for more than 30 cumulative days for warranty-related defect repairs related to this and other electrical issues. Multiple repair attempts have not permanently corrected the condition. The vehicle remains available for inspection upon request. Due to the unpredictable loss of acceleration and prior safety incidents, there are ongoing concerns regarding safe operation of the vehicle.
NHTSA complaint #11717754 — an unverified report by a vehicle owner.
Merritt Island, FLCrash
ELECTRICAL SYSTEM
The vehicle has experienced repeated incidents of sudden reduced engine power and loss of acceleration while driving. On multiple occasions, while traveling at highway speeds, the vehicle failed to respond normally to throttle input and would not accelerate as commanded and loss of power steering making it difficult to turn the steering wheel and apply brakes. One incident resulted in throwing my truck off the road and luckily we nearly avoided a multi car collision and potential pile with my wife, 8yr old daughter and newborn son in the vehicle at high speeds up to 60/70+ mph but despite avoiding a major life threatening accident to us and other drivers, resulted in striking objects, glass and debris on the side of the road causing damage to my vehicle and then sliding to a complete stop in the ditch off the highway. This creates a hazardous driving situation, particularly when merging into traffic or attempting to maintain speed with surrounding vehicles, increasing the risk of collision. The malfunction appears related to the engine, electrical system, and powertrain. During at least one dealership visit, the reduced power condition was recreated and confirmed by service personnel. However, despite multiple warranty repair attempts, the issue continues to reoccur intermittently. Warning messages have appeared at times, including reduced engine power notifications and check engine indicators, though the condition has also occurred without advance warning. The intermittent nature of the defect makes it unpredictable and unsafe. The vehicle has been out of service for more than 30 cumulative days for warranty-related defect repairs related to this and other electrical issues. Multiple repair attempts have not permanently corrected the condition. The vehicle remains available for inspection upon request. Due to the unpredictable loss of acceleration and prior safety incidents, there are ongoing concerns regarding safe operation of the vehicle.
NHTSA complaint #11717754 — an unverified report by a vehicle owner.
Merritt Island, FLCrash
ENGINE
The vehicle has experienced repeated incidents of sudden reduced engine power and loss of acceleration while driving. On multiple occasions, while traveling at highway speeds, the vehicle failed to respond normally to throttle input and would not accelerate as commanded and loss of power steering making it difficult to turn the steering wheel and apply brakes. One incident resulted in throwing my truck off the road and luckily we nearly avoided a multi car collision and potential pile with my wife, 8yr old daughter and newborn son in the vehicle at high speeds up to 60/70+ mph but despite avoiding a major life threatening accident to us and other drivers, resulted in striking objects, glass and debris on the side of the road causing damage to my vehicle and then sliding to a complete stop in the ditch off the highway. This creates a hazardous driving situation, particularly when merging into traffic or attempting to maintain speed with surrounding vehicles, increasing the risk of collision. The malfunction appears related to the engine, electrical system, and powertrain. During at least one dealership visit, the reduced power condition was recreated and confirmed by service personnel. However, despite multiple warranty repair attempts, the issue continues to reoccur intermittently. Warning messages have appeared at times, including reduced engine power notifications and check engine indicators, though the condition has also occurred without advance warning. The intermittent nature of the defect makes it unpredictable and unsafe. The vehicle has been out of service for more than 30 cumulative days for warranty-related defect repairs related to this and other electrical issues. Multiple repair attempts have not permanently corrected the condition. The vehicle remains available for inspection upon request. Due to the unpredictable loss of acceleration and prior safety incidents, there are ongoing concerns regarding safe operation of the vehicle.
NHTSA complaint #11717754 — an unverified report by a vehicle owner.
Salinas, CAFire
ELECTRICAL SYSTEM
The contact owned a 2023 GMC Sierra 1500. The contact stated that while the vehicle was parked on the driveway, it caught on fire. The contact was inside the residence when a passerby knocked on the door and informed the contact of the fire. A neighbor helped extinguish the fire. When the contact stepped outside, the flames were by the instrument panel; the flames had risen to the rooftop. The front windshield was shattered. The fire was contained to the cabin. The fire department was called. The contact stated that weeks before the fire started, an abnormal sound could be heard coming from the engine. The contact removed the battery from the vehicle. The vehicle was not insured. The manufacturer was not made aware of the failure. The failure mileage was unknown.
NHTSA complaint #11715117 — an unverified report by a vehicle owner.
Myrtle Beach, SCFire
STEERING
The vehicle has suffered repeated systemic electrical failures all while being under 8,000 miles. What component/system failed? Power distribution/fuse block, starter, fuel pump control module, horn circuit, body control module, instrument cluster, and charging system. Error codes documented include P0627 (Fuel Pump Control Circuit), U0100 (Lost Comm ECM/PCM), B1325 (Control Module Power Low), U0140 (Lost Comm BCM), and B1000 (ECM fault). All repairs are documented by the dealer, and the truck remains available for inspection. How was safety at risk? The truck lost propulsion at speed, emitted smoke from the engine bay, and became disabled in traffic, placing my family, including my toddler, in immediate danger of collision and fire. Electrical defects also disabled horn and instrument cluster, removing critical warning and signaling functions. These electrical issues have been ongoing for months and GM refuses to replace and can't seem to fix it. Has it been confirmed? Yes. Each failure was diagnosed and confirmed by an authorized GM dealer. Components replaced include fuse block, starter, fuel system computer, horn assembly, and cluster. Despite repairs, issues recur. Inspected by others? GM corporate case managers are aware and have acknowledged defects, though they have refused to issue written determinations. Insurance has not yet been involved, but records are available. The dealer has attempted to repaid more than 4 times with no success. Warning lamps/messages? Yes. Prior to and during failures, vehicle displayed repeated “Service Electrical System,” “Low Voltage,” and communication fault codes. Cluster intermittently blacked out. Smoke in engine bay indicated immediate fire hazard. Cumulative out-of-service days exceeding 20. The failures pose unacceptable risk of fire, sudden propulsion loss, and loss of critical safety functions. I have ALL calls with GM recorded and transcribed as I am in SC (single party recording state) and can provide those.
NHTSA complaint #11687675 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Pickerington, OH
POWER TRAIN
My 2023 GMC Sierra 1500 SLT 4WD currently at 67659 miles was taken in to the dealer because of excessive jerk when accelerating or trying to reverse, diagnostic scan failed for check engine and ABS trouble codes. The scan return code PO747 indicating transmission pressure control solenoid “A” was stuck on for a predetermined period of time. The recommended repair is replacement of automatic transmission, solenoid control valve body. I’m aware that GM has issued a TSB 25–NA-255 and special coverage N24245441–02 addressing this exact failure on the GM 10 speed and that GM previously issued a related recall N242454440 addressing this exact failure on the GM 10 speed transmissions, and that GM previously issued a related recall for this citing rear wheel lock up risk associated with transmission valve condition. My vehicle scan showed an ABS failure at the same time as a transmission. code, consistent with the safety risk. GM has already acknowledged and its own recall documentation however I was told to contact NHTSA to document the safety risk and request investigation of the scope of this defect across affected models years and vehicles as mine seems to have fallen short. I previously owned a 2021GMC vehicle same model that experience the identical transmission valve body failure that vehicle could not be repaired in a reasonable time and I ultimately experience financial loss and had to replace a vehicle now I’m experiencing the same defect on the vehicle purchased (this one) with significantly fewer miles than would be expected for a major transmission failure, indicating that this may be a reoccurring manufacturing design defect rather than an isolated incident. Thank you for your time and I hope this issue can be resolved as I do love the truck otherwise however safety first. Thank you
NHTSA complaint #11757965 — an unverified report by a vehicle owner.
Pickerington, OH
WHEELS
My 2023 GMC Sierra 1500 SLT 4WD currently at 67659 miles was taken in to the dealer because of excessive jerk when accelerating or trying to reverse, diagnostic scan failed for check engine and ABS trouble codes. The scan return code PO747 indicating transmission pressure control solenoid “A” was stuck on for a predetermined period of time. The recommended repair is replacement of automatic transmission, solenoid control valve body. I’m aware that GM has issued a TSB 25–NA-255 and special coverage N24245441–02 addressing this exact failure on the GM 10 speed and that GM previously issued a related recall N242454440 addressing this exact failure on the GM 10 speed transmissions, and that GM previously issued a related recall for this citing rear wheel lock up risk associated with transmission valve condition. My vehicle scan showed an ABS failure at the same time as a transmission. code, consistent with the safety risk. GM has already acknowledged and its own recall documentation however I was told to contact NHTSA to document the safety risk and request investigation of the scope of this defect across affected models years and vehicles as mine seems to have fallen short. I previously owned a 2021GMC vehicle same model that experience the identical transmission valve body failure that vehicle could not be repaired in a reasonable time and I ultimately experience financial loss and had to replace a vehicle now I’m experiencing the same defect on the vehicle purchased (this one) with significantly fewer miles than would be expected for a major transmission failure, indicating that this may be a reoccurring manufacturing design defect rather than an isolated incident. Thank you for your time and I hope this issue can be resolved as I do love the truck otherwise however safety first. Thank you
NHTSA complaint #11757965 — an unverified report by a vehicle owner.
Hickory, NC
UNKNOWN OR OTHER
The GMC Sierra has a known issue from the manufacturer in which the power sliding rear window can start to leak water into the cab of the truck during rain or other impact with outside water. This issue allows water into the cab through a cracked or faulty seal, which impacts visibility and allows water to penetrate inside, producing risk for moisture to collect on the back window and potentially cause mold to grow inside, further creating a health risk. Further, the water intrusion can lead to interior damage, as well as potentially cause electrical failure and unsafe operation. This is a known issue dating back to January 2019 when GM issued Technical Service Bulletin 18-NA-383 and has continued to be revised since. The component has been reviewed and inspected by the dealer and is known to the manufacturer; however, they are unwilling to fix without cost as this is not a recall.
NHTSA complaint #11757869 — an unverified report by a vehicle owner.
Mineral Wells, TX
STRUCTURE:BODY
The upper grille trim piece came off while driving down I20 between Hudson Oaks and Willow Park. I was doing between 60-65 mph. It could’ve hit other vehicles behind me, or to the side of me. This piece is a known issue and the 2022’s have a recall but not the 2023 model years. No signs of this being about to break.
NHTSA complaint #11757856 — an unverified report by a vehicle owner.
Pickerington, OH
SERVICE BRAKES
My 2023 GMC Sierra 1500 SLT 4WD currently at 67659 miles was taken in to the dealer because of excessive jerk when accelerating or trying to reverse, diagnostic scan failed for check engine and ABS trouble codes. The scan return code PO747 indicating transmission pressure control solenoid “A” was stuck on for a predetermined period of time. The recommended repair is replacement of automatic transmission, solenoid control valve body. I’m aware that GM has issued a TSB 25–NA-255 and special coverage N24245441–02 addressing this exact failure on the GM 10 speed and that GM previously issued a related recall N242454440 addressing this exact failure on the GM 10 speed transmissions, and that GM previously issued a related recall for this citing rear wheel lock up risk associated with transmission valve condition. My vehicle scan showed an ABS failure at the same time as a transmission. code, consistent with the safety risk. GM has already acknowledged and its own recall documentation however I was told to contact NHTSA to document the safety risk and request investigation of the scope of this defect across affected models years and vehicles as mine seems to have fallen short. I previously owned a 2021GMC vehicle same model that experience the identical transmission valve body failure that vehicle could not be repaired in a reasonable time and I ultimately experience financial loss and had to replace a vehicle now I’m experiencing the same defect on the vehicle purchased (this one) with significantly fewer miles than would be expected for a major transmission failure, indicating that this may be a reoccurring manufacturing design defect rather than an isolated incident. Thank you for your time and I hope this issue can be resolved as I do love the truck otherwise however safety first. Thank you
NHTSA complaint #11757965 — an unverified report by a vehicle owner.
North Richland Hills, TX
STRUCTURE:BODY
The upper grill chrome trim blew off at highway speed. The plastic brackets holding it in place sheared off. This was a known defect resulting in 70,000 recalled trucks for the prior year model (2022), but for some reason isn't covered for 2023. Same exact issue
NHTSA complaint #11757457 — an unverified report by a vehicle owner.
Jacksonville, FL
FUEL/PROPULSION SYSTEM
The fuel pump control module went bad and the vehicle shut off while driving. The vehicle is only 3 years old. Everyone I know with a GM truck or SUV has had the same issue and the dealer service writer even told me they get at least 6 vehicles with the same issue per week. There is already a recall for GM SUV's for 2021-22 model years but not for anything else even though many other vehicles have the same issue. They replaced the module under warranty but it is all but guaranteed to just keep happening.
NHTSA complaint #11756888 — an unverified report by a vehicle owner.
Lake Charles, LA
STRUCTURE:BODY
Whilst driving down the highway at 65 mph the plastic front grill deflector broke off and slammed into my windshield and the vehicle behind me. Luckily the vehicle behind me sustained no damage other than how frightened she and her children were. This is a known issue and was subject to a recall for the 2022 GMC Sierra Denali's. Nothing has changed between the 2 models as far as I can tell and it's the exact same grill deflector. When I informed the dealership of this they told me it would be a $950 repair out of pocket. First of all, it is unacceptable for a $75,000 vehicle to have a plastic component that can just break off and become an immediate and unavoidable hazard on the highways. The recall MUST be extended to these vehicles. I have reached out to GM and they confirmed it would be an out of pocket expense, but I am escalating the situation. Thank you!
NHTSA complaint #11756641 — an unverified report by a vehicle owner.
at 29,000 milesEast York, PA
SERVICE BRAKES, HYDRAULIC
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the brakes failed to respond as needed. The vehicle was towed to the dealer to be diagnosed. The vehicle was diagnosed with an inoperable battery, which caused the brake module to fail, preventing the brakes from operating as intended. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 29,000.
NHTSA complaint #11756555 — an unverified report by a vehicle owner.
Auburn, AL
UNKNOWN OR OTHER
The OnStar module in the truck is broke it affects all communications. The truck has including things like let me know what the speed limit is. It happened after they did a software update, which seems a little fishy because there was nothing wrong with it before I understand. Some people were having problems with this module, causing their batteries to die, but now I’m the one having issues and they won’t seem to fix it unless I pay them $900.
NHTSA complaint #11756360 — an unverified report by a vehicle owner.
Litchfield, NH
POWER TRAIN
My truck threw the code p0747 for fail valve body. When I do my research its a common problem. GM is stating my truck isnt covered.
NHTSA complaint #11755890 — an unverified report by a vehicle owner.
Fort Mill, SC
STRUCTURE:BODY
I started to notice detached broken plastic pieces behind the upper grill housing. I notified the dealer, and in the meantime of trying to figure out what to do, the upper grill housing came detached when I was driving down the highway and flew up and back onto the highway. Sounds similar to safety recall N242490120, which was for 2022 model year trucks. Not sure why this stopped at 2022, but it happed on my 2023.
NHTSA complaint #11755830 — an unverified report by a vehicle owner.
Cleveland, OH
STEERING
My 2023 GNC Sierra 1500 has experienced a recurring electrical and safety-related malfunction on multiple occasions while driving. The dashboard and warning lights intermittently flash on, and off and numerous warning messages appear simultaneously. During previous occurrences, warnings included power steering service, safety restraint system, check engine and transmission related messages, including a message instructing me to pull over and shut the vehicle off. During one occurrence, the electric power steering assist stopped working while I was driving. The vehicle was taken to an authorized GMC dealership multiple times while under the factory warranty. The dealer replaced the Brake System Control Module and performed vehicle-wide software/programming updates. When the problem continued, the dealer contacted GM Technical Assistance. The Dealer subsequently diagnosed an intermittent open circuit involving the electric power steering rack-and-pinion/steering gear assembly and replaced the complete steering gear assembly. Despite these repairs, the malfunction has occurred again, during another occurrence while driving on the freeway, the dashboard flashed on and off and multiple warning lights and messages repeatedly appeared, similar to the condition that occurred before the steering gear was replaced. The vehicle currently has approximately 55,000 miles. The condition remains intermittent despite multiple repair attempts. I am concerned that this recuring electrical or vehicle communication failure could again cause loss of power steering assistance or affect other safety-related vehicle systems while driving.
NHTSA complaint #11755734 — an unverified report by a vehicle owner.
Port St. Lucie, FL
STRUCTURE:BODY
Vehicle: 2023 GMC Sierra 1500 SLE VIN: [XXX] While driving southbound on [XXX] near exit [XXX], the front upper grille molding/deflector completely detached from my 2023 GMC Sierra 1500 SLE at highway speed and separated from the vehicle, creating a potential road hazard for other motorists. Prior to the complete separation, I noticed that the upper grille molding was becoming loose and lifting away from the vehicle. I stopped and photographed the component and its attachment areas. The photographs show failed/broken attachment points while the molding was still partially attached to the truck. Later, while driving on [XXX] to work, the remaining attachments failed and the entire molding separated from the vehicle. The part could not safely be recovered from the interstate. The vehicle recently underwent dealer service involving the active grille shutter/damper area near this component. I cannot determine whether that service contributed to the failure, so I am reporting it as part of the vehicle's recent service history rather than asserting it as the cause. I subsequently became aware that NHTSA Recall 25V-060 / GM Recall N242490120 addresses separation of a front upper grille deflector on certain GMC Sierra 1500 vehicles due to fractured attachment points. My vehicle is a 2023 model and does not presently appear to be included in that recall. Because my vehicle experienced a similar failure mode resulting in the exterior component completely separating at highway speed, I am submitting this complaint so NHTSA can determine whether this condition may extend beyond the vehicles currently covered by the recall. Photographs documenting the component and failed attachment areas before its complete separation are available. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11755700 — an unverified report by a vehicle owner.
Port St. Lucie, FL
STRUCTURE:BODY
While driving southbound on Interstate 95 in Florida, the front upper grille molding/deflector completely detached from my 2023 GMC Sierra 1500 SLE at highway speed and separated from the vehicle, creating a potential road hazard for other motorists. Prior to the complete separation, I noticed that the upper grille molding was becoming loose and lifting away from the vehicle. I stopped and photographed the component and its attachment areas. The photographs show failed/broken attachment points while the molding was still partially attached to the truck. Later, while driving on I-95, the remaining attachments failed and the entire molding separated from the vehicle. The part could not safely be recovered from the interstate. The vehicle recently underwent dealer service involving the active grille shutter/damper area near this component. I cannot determine whether that service contributed to the failure, so I am reporting it as part of the vehicle's recent service history rather than asserting it as the cause. I subsequently became aware that NHTSA Recall 25V-060 / GM Recall N242490120 addresses separation of a front upper grille deflector on certain GMC Sierra 1500 vehicles due to fractured attachment points. My vehicle is a 2023 model and does not presently appear to be included in that recall. Because my vehicle experienced a similar failure mode resulting in the exterior component completely separating at highway speed, I am submitting this complaint so NHTSA can determine whether this condition may extend beyond the vehicles currently covered by the recall. Photographs documenting the component and failed attachment areas before its complete separation are available.
NHTSA complaint #11755702 — an unverified report by a vehicle owner.
Cleveland, OH
ELECTRICAL SYSTEM
My 2023 GNC Sierra 1500 has experienced a recurring electrical and safety-related malfunction on multiple occasions while driving. The dashboard and warning lights intermittently flash on, and off and numerous warning messages appear simultaneously. During previous occurrences, warnings included power steering service, safety restraint system, check engine and transmission related messages, including a message instructing me to pull over and shut the vehicle off. During one occurrence, the electric power steering assist stopped working while I was driving. The vehicle was taken to an authorized GMC dealership multiple times while under the factory warranty. The dealer replaced the Brake System Control Module and performed vehicle-wide software/programming updates. When the problem continued, the dealer contacted GM Technical Assistance. The Dealer subsequently diagnosed an intermittent open circuit involving the electric power steering rack-and-pinion/steering gear assembly and replaced the complete steering gear assembly. Despite these repairs, the malfunction has occurred again, during another occurrence while driving on the freeway, the dashboard flashed on and off and multiple warning lights and messages repeatedly appeared, similar to the condition that occurred before the steering gear was replaced. The vehicle currently has approximately 55,000 miles. The condition remains intermittent despite multiple repair attempts. I am concerned that this recuring electrical or vehicle communication failure could again cause loss of power steering assistance or affect other safety-related vehicle systems while driving.
NHTSA complaint #11755734 — an unverified report by a vehicle owner.
Cleveland, OH
SERVICE BRAKES
My 2023 GNC Sierra 1500 has experienced a recurring electrical and safety-related malfunction on multiple occasions while driving. The dashboard and warning lights intermittently flash on, and off and numerous warning messages appear simultaneously. During previous occurrences, warnings included power steering service, safety restraint system, check engine and transmission related messages, including a message instructing me to pull over and shut the vehicle off. During one occurrence, the electric power steering assist stopped working while I was driving. The vehicle was taken to an authorized GMC dealership multiple times while under the factory warranty. The dealer replaced the Brake System Control Module and performed vehicle-wide software/programming updates. When the problem continued, the dealer contacted GM Technical Assistance. The Dealer subsequently diagnosed an intermittent open circuit involving the electric power steering rack-and-pinion/steering gear assembly and replaced the complete steering gear assembly. Despite these repairs, the malfunction has occurred again, during another occurrence while driving on the freeway, the dashboard flashed on and off and multiple warning lights and messages repeatedly appeared, similar to the condition that occurred before the steering gear was replaced. The vehicle currently has approximately 55,000 miles. The condition remains intermittent despite multiple repair attempts. I am concerned that this recuring electrical or vehicle communication failure could again cause loss of power steering assistance or affect other safety-related vehicle systems while driving.
NHTSA complaint #11755734 — an unverified report by a vehicle owner.
Baytown, TX
STRUCTURE:BODY
While driving my 2023 GMC Sierra on the highway at highway speeds, a piece of the front grille suddenly detached and flew off the vehicle. There was no prior accident, impact, or external damage to the grille; the part failed and unclipped on its own due to defective manufacturing or weak retaining clips. This creates a severe safety hazard as the flying debris could have struck the windshield of the vehicles traveling behind me, potentially causing a major accident. I am aware that the 2022 GMC Sierra has an active recall (N242490120) for this exact same issue, yet GM is refusing to cover this 2023 model under warranty or recall despite presenting identical component failure.
NHTSA complaint #11755666 — an unverified report by a vehicle owner.
Madera, CA
ENGINE
- vehicle started misfiring, ECM, valve timing code, throttle system code, data system, gateway, module,. Vehicle is available and currently at the GMC dealership for continued diagnostic. -this happened on the freeway and out of nowhere the vehicle started shaking, rough, losing power and acceleration, I had to cut someone off on the freeway just to get over to the right shoulder and turned off the vehicle called a tow truck and haven’t been able to use the vehicle since. Vehicle is unable to be driven due to safety issues of increased acceleration and loss of power, intense shaking. -the vehicle is at the dealership now, prior there was a diagnostic performed by a different dealer, and it has been confirmed. -the vehicle is at the GMC dealership now. -ECM check engine light came on prior to the vehicle misfiring and other codes coming up.
NHTSA complaint #11755389 — an unverified report by a vehicle owner.
Madera, CA
FUEL/PROPULSION SYSTEM
- vehicle started misfiring, ECM, valve timing code, throttle system code, data system, gateway, module,. Vehicle is available and currently at the GMC dealership for continued diagnostic. -this happened on the freeway and out of nowhere the vehicle started shaking, rough, losing power and acceleration, I had to cut someone off on the freeway just to get over to the right shoulder and turned off the vehicle called a tow truck and haven’t been able to use the vehicle since. Vehicle is unable to be driven due to safety issues of increased acceleration and loss of power, intense shaking. -the vehicle is at the dealership now, prior there was a diagnostic performed by a different dealer, and it has been confirmed. -the vehicle is at the GMC dealership now. -ECM check engine light came on prior to the vehicle misfiring and other codes coming up.
NHTSA complaint #11755389 — an unverified report by a vehicle owner.
Midland, TX
STRUCTURE:BODY
My grill deflector suddenly flew off, hit my windshield a flew into a semi hauling oil field equipment. We both pulled over and found no significant damage to his truck. I have a two inch scratch on my windshield and possibly lite hood scratching. Dealership required me to pay $390.73 but said I would be reimbursed for my losses. It never happened. Now I’m fighting with GM to get some resolution. This could be deadly for a motorcycle rider for sure. Hundreds of people reporting same issue on 22 and 23 Sierras and AT4’s.
NHTSA complaint #11755152 — an unverified report by a vehicle owner.
at 34,500 milesWinthrop, MA
ELECTRICAL SYSTEM
The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the instrument panel shut off without warning. The vehicle was restarted, and the panel remained blank with white streaks across the screen. The vehicle was towed to a dealer, and the dealer associated the failure with the instrument cluster. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 34,500.
NHTSA complaint #11754418 — an unverified report by a vehicle owner.
San Antonio, TX
UNKNOWN OR OTHER
The grill deflector flew off while driving on the highway. I was driving roughly 55 mph. It is available now, but will be getting repaired in the near future. My concern is that it appears that this was an issue with the 2022 models and it’s still an issue on the 2023. The safety issue is if there was a vehicle or motorcycle behind me that it could have harmed whoever could have been driving behind me, caused and accident, or damaged their vehicle or mine in the process. The service advisor (J.R.) told me that “sometimes the wind gets underneath the bezel and makes it snap”. No it has not been inspected by any of this mentioned. No warning signs prior to the incident.
NHTSA complaint #11753855 — an unverified report by a vehicle owner.
Canonsburg, PA
STRUCTURE:BODY
The front grille bezel mounting clips broke and it started to fly off while driving on the highway. Luckily, I was able to pull over before the last clip broke and took it off before it became a spear flying at the cars behind me. There is an active recall for this issue for the 2022 GMC Sierra 1500 models, but not 2023/2024 models (same body I believe).
NHTSA complaint #11753825 — an unverified report by a vehicle owner.
San Antonio, TX
STRUCTURE:BODY
The grill deflector flew off while driving on the highway. I was driving roughly 55 mph. It is available now, but will be getting repaired in the near future. My concern is that it appears that this was an issue with the 2022 models and it’s still an issue on the 2023. The safety issue is if there was a vehicle or motorcycle behind me that it could have harmed whoever could have been driving behind me, caused and accident, or damaged their vehicle or mine in the process. The service advisor (J.R.) told me that “sometimes the wind gets underneath the bezel and makes it snap”. No it has not been inspected by any of this mentioned. No warning signs prior to the incident.
NHTSA complaint #11753855 — an unverified report by a vehicle owner.