Owners have filed 441 complaints
about the 2021 GMC Yukon with NHTSA between 2020 and 2026.
The largest single group is the engine & cooling.
Across this model's run it ranks 2 of 34 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 — 100
Against the median year of the GMC Yukon. 50 means typical for this
model; 100 means roughly double.
Severity — 29
5.7% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 67
40% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
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.
Automatic Emergency Braking
1135.5%
Warnings
825.8%
Control/Drive Module
39.7%
Warnings
26.5%
Blind Spot Detection
26.5%
ABS Warning Light
26.5%
Body
26.5%
Crank/Camshaft Position Sensor
13.2%
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
44.2%
1,000 – 9,999 miles
1313.5%
10,000 – 24,999 miles
1515.6%
25,000 – 49,999 miles
99.4%
50,000 – 74,999 miles
1818.8%
75,000 – 99,999 miles
2020.8%
100,000 – 149,999 miles
1515.6%
150,000+ miles
22.1%
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.
Oct 2020peak 24Aug 2026
NHTSA investigations into the 2021 GMC Yukon
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...
PE21010Opened 9 Apr 2021Closed 24 Aug 2023AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE
Air Bag Malfunction
On April 9, 2021, the Office of Defects Investigations (ODI) opened PE21-010 to investigate instances of air bag malfunction indicator light (MIL) illumination and potential for frontal air bag non-deployment in several vehicles manufactured by General Motors (GM). The vehicles included model year (MY) 2020 through 2021 CT4 and CT5 passenger cars, Sierra and Silverado trucks (1500/2500/3500 models), XT4 and MY 2021 Escalade, Suburban, Tahoe, Yukon SUVs.Technical Service Bulletin (TSB) 21-NA-005, issued in March 2021, addresses air bag MIL illumination with diagnostic trouble codes (DTCs) B0001...
Recalls on the 2021 GMC Yukon
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.
24V797000
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.
Risk: Rear wheel lock-up can increase the risk of a crash.
22V827000
EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
General Motors, LLC (GM) is recalling certain 2021 Yukon, Yukon XL, Chevrolet Tahoe, Chevrolet Suburban, Cadillac Escalade, and Cadillac Escalade ESV 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: Daytime Running Lights that do not deactivate as intended may cause a glare, reducing visibility and increasing the risk of a crash.
22V617000
SEAT BELTS:CRITICAL FASTENERS
General Motors, LLC (M) is recalling certain 2021-2022 Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon, and Yukon XL vehicles equipped with third-row seats. The rivet that retains the buckle to the mounting bracket in the left or right side third-row seat belt buckle assembly may have been improperly formed.
Risk: A seat belt with a deformed rivet may not properly restrain an occupant, increasing the risk of injury during a crash.
22V036000
POWER TRAIN:DRIVELINE:DRIVESHAFT
General Motors, LLC (GM) is recalling certain 2021 GMC Yukon, Yukon XL, Cadillac Escalade, Escalade ESV, Chevrolet Suburban, and Chevrolet Tahoe vehicles. The rear wheel driveshaft assemblies may have internal components that were not heat-treated properly, possibly resulting in driveshaft failure.
Risk: Driveshaft failure can cause a sudden loss of drive power, increasing the risk of a crash.
General Motors, LLC (GM) is recalling certain 2021 Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon, and Yukon XL vehicles. The fuel pump power control module may cause the fuel pump to fail or operate intermittently, which can interrupt fuel flow to the engine, and cause an unexpected engine stall.
Risk: An engine stall increases the risk of a crash.
21V579000
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE
General Motors, LLC (GM) is recalling certain 2021 Chevrolet Tahoe and GMC Yukon vehicles. Dealer service technicians may have calibrated the brake system incorrectly, affecting Electronic Stability Control (ESC) , traction control, Anti-Lock Brake System (ABS), and braking while towing a trailer.
Risk: Overall braking performance may be compromised, increasing the risk of a crash.
21V455000
STEERING:STEERING CONTROL MODULE
General Motors, LLC (GM) is recalling certain 2021 Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Chevrolet Tahoe, GMC Yukon, and Yukon XL vehicles. A software issue may cause a loss of power steering assist at startup or while driving.
Risk: Increased steering effort, particularly at lower speeds, increases the risk of a crash.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 202522549,848 units in Canada
Engine
Issue: On certain vehicles, the connecting rods and/or crankshaft components may not have been manufactured properly. As a result, the engine could make abnormal noises and a warning light may turn on. If you continue to drive the vehicle with these symptoms, the engine could fail. Note: This recall only affects certain vehicles equipped with a 6.2 L V8 gas engine. Safety Risk: An engine failure could cause a sudden loss of power to the wheels and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and advise you to take your vehicle to inspect and, if necessary, repair or replace the engine. For vehicles that pass the engine inspection, the dealer will replace the oil with a higher viscosity oil, install a new oil fill cap, replace the oil filter, and add an insert to the owner's manual.
Recall 202463752,309 units in Canada
Powertrain
Issue: Over time, the transmission control valve could wear and lose pressure. If this happens, the transmission could shift harshly and could cause the rear wheels to lock up. Note: This recall only affects vehicles equipped with a diesel engine. Safety Risk: Rear wheels that lock suddenly could cause a loss of control and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and advise you to take your vehicle to a dealership to update the transmission control module software to detect excess wear in advance of a wheel lock up. If detected, a service engine light would turn on, a message would display in the instrument panel and the vehicle would be limited to fifth gear.
Recall 2024060273,306 units in Canada
Lights And Instruments
Issue: On certain vehicles, a software problem could cause the lower beam headlamps not to turn on as it becomes dark outside if the multi-function switch is in the "OFF" or "PARKING LAMP" position. This could also cause the daytime running lamps (DRLs) to turn off when the vehicle is moving. As a result, the vehicles may not meet certain requirements of Canadian regulations. Safety Risk: Headlamps and/or DRLs that don't turn on could reduce visibility, make the vehicle less visible to others and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and advise you to take your vehicle to a dealership to update the body control module (BCM)software.
Recall 2023472163,611 units in Canada
Lights And Instruments
Issue: On certain vehicles, the automatic headlamps may not turn on soon enough as it becomes dark outside. Canadian regulations require automatic headlamps to turn on when the ambient light level drops below a certain point (1000 lux). Safety Risk: Headlamps that don't turn on as it becomes dark outside could reduce visibility and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and send a wireless over-the-air software update to eligible vehicles to update the body control module (BCM) software. Alternatively, you may schedule an appointment to have the update performed at a GM dealership.
Recall 202263416,026 units in Canada
Lights And Instruments
Issue: On certain vehicles, the daytime running lamps (DRLs) may stay on when the headlamps are on. Canadian regulations require the DRLs to turn off when the headlamps are on. Safety Risk: Daytime running lamps that stay on could cause glare for oncoming drivers and increase the risk of a crash. Corrective Action: General Motors will notify owners by mail and and send a wireless over-the-air software update to eligible vehicles to update the body control module (BCM) software. Alternatively, you may schedule an appointment to have the update performed at a GM dealer.
Recall 202245630,096 units in Canada
Seats And Restraints
Issue: On certain vehicles, the left and/or right third-row seat belt buckles may not have been attached correctly. As a result, the seat belts could detach in a crash. Safety Risk: A seat belt that detaches in a crash could create an increased risk of injury. Corrective Actions: General Motors will notify owners by mail and instruct you to take your vehicle to a dealership to inspect, and if necessary, replace the left and/or right third-row seat belt buckle assemblies.
Recall 2022027141 units in Canada
Powertrain
Issue: On certain vehicles, parts inside the rear axle shafts may not have been manufactured properly. Over time, this could lead to wear that can cause noise and vibration. If you continue to drive the vehicle with these symptoms, an axle shaft could seize and cause a loss of power to the wheels. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to replace the left and/or right-rear axle shafts.
Recall 2021583334 units in Canada
Fuel System
Issue: On certain vehicles, a problem with the fuel pump power control module could interrupt fuel flow to the engine. If this happens, you may notice poor engine performance and the check engine light may turn on. This could also result in a sudden engine stall while driving. Safety Risk: A sudden loss of engine power could increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to replace the fuel pump power control module.
Reports where the owner recorded a crash, a fire, an injury or a death.
Beaufort, NCCrash1 injured
AIR BAGS
Vehicle: 2021 GMC Denali Mileage: ~48,000 miles Purchase Price: $62,000 Issue: Airbags & crash sensors failed to deploy Complaint Text: I am filing a safety complaint regarding my 2021 GMC Denali. I was involved in a rear-end collision at approximately 45 mph, where I struck another vehicle straight on from behind. The impact was severe enough to total my vehicle, yet no airbags deployed, and no forward collision warning or crash sensor systems activated. This is especially concerning because this vehicle was previously involved in a front-end collision (not my fault) and underwent extensive repairs. I was assured all systems were repaired and functioning properly. Additionally, my vehicle had completed recall work related to safety systems prior to this crash. This is the second front-end crash involving this vehicle where airbags failed to deploy. Given the speed and severity of the impact, airbags should have deployed. The failure of these systems placed my life at serious risk. The vehicle has since been totaled and taken by insurance, but I am requesting that this failure be formally investigated as a potential safety defect in the airbag and sensor systems. I am extremely concerned that the vehicle’s safety systems were either defective or not properly restored following repairs and recalls.
NHTSA complaint #11706440 — an unverified report by a vehicle owner.
Beaufort, NCCrash1 injured
ELECTRICAL SYSTEM
Vehicle: 2021 GMC Denali Mileage: ~48,000 miles Purchase Price: $62,000 Issue: Airbags & crash sensors failed to deploy Complaint Text: I am filing a safety complaint regarding my 2021 GMC Denali. I was involved in a rear-end collision at approximately 45 mph, where I struck another vehicle straight on from behind. The impact was severe enough to total my vehicle, yet no airbags deployed, and no forward collision warning or crash sensor systems activated. This is especially concerning because this vehicle was previously involved in a front-end collision (not my fault) and underwent extensive repairs. I was assured all systems were repaired and functioning properly. Additionally, my vehicle had completed recall work related to safety systems prior to this crash. This is the second front-end crash involving this vehicle where airbags failed to deploy. Given the speed and severity of the impact, airbags should have deployed. The failure of these systems placed my life at serious risk. The vehicle has since been totaled and taken by insurance, but I am requesting that this failure be formally investigated as a potential safety defect in the airbag and sensor systems. I am extremely concerned that the vehicle’s safety systems were either defective or not properly restored following repairs and recalls.
NHTSA complaint #11706440 — an unverified report by a vehicle owner.
Vehicle: 2021 GMC Denali Mileage: ~48,000 miles Purchase Price: $62,000 Issue: Airbags & crash sensors failed to deploy Complaint Text: I am filing a safety complaint regarding my 2021 GMC Denali. I was involved in a rear-end collision at approximately 45 mph, where I struck another vehicle straight on from behind. The impact was severe enough to total my vehicle, yet no airbags deployed, and no forward collision warning or crash sensor systems activated. This is especially concerning because this vehicle was previously involved in a front-end collision (not my fault) and underwent extensive repairs. I was assured all systems were repaired and functioning properly. Additionally, my vehicle had completed recall work related to safety systems prior to this crash. This is the second front-end crash involving this vehicle where airbags failed to deploy. Given the speed and severity of the impact, airbags should have deployed. The failure of these systems placed my life at serious risk. The vehicle has since been totaled and taken by insurance, but I am requesting that this failure be formally investigated as a potential safety defect in the airbag and sensor systems. I am extremely concerned that the vehicle’s safety systems were either defective or not properly restored following repairs and recalls.
NHTSA complaint #11706440 — an unverified report by a vehicle owner.
Star, IDCrash1 injured
AIR BAGS
I was read ended at a stop light. The other drive fell asleep. She was in a 3.25 ton dodge ram going 45-55 mph. She never touched her brakes. She pushed me into the car in front of me. Air bags never deployed . My car is totaled. The driver’s car hit so hard the front of her car was in my third row of seats. I was taken to the hospital for chest pains since the seatbelt was the only thing that saved me .
NHTSA complaint #11683727 — an unverified report by a vehicle owner.
Minnetonka, MNCrash
AIR BAGS
The contact owned a 2021 GMC Denali. The contact stated that while his wife was driving at 25 MPH, the vehicle lost power steering. The vehicle failed to turn and crashed into a tree. There were no reported injuries. There were no warning lights. The contact stated that the failure was related to NHTSA Campaign Number: 21V455000 (Steering). The vehicle was taken to his residence. There was no police report filed, airbag deployment, or fire. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The insurance company deemed the vehicle to be a total loss. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 67,000.
NHTSA complaint #11657167 — an unverified report by a vehicle owner.
Minnetonka, MNCrash
STEERING
The contact owned a 2021 GMC Denali. The contact stated that while his wife was driving at 25 MPH, the vehicle lost power steering. The vehicle failed to turn and crashed into a tree. There were no reported injuries. There were no warning lights. The contact stated that the failure was related to NHTSA Campaign Number: 21V455000 (Steering). The vehicle was taken to his residence. There was no police report filed, airbag deployment, or fire. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The insurance company deemed the vehicle to be a total loss. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 67,000.
NHTSA complaint #11657167 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Derby, KS
ENGINE
I am filing this complaint regarding repeated catastrophic engine failures in my 2021 GMC Yukon Denali equipped with the 6.2L L87 V8. I purchased this vehicle as a GM Certified Pre-Owned vehicle. At approximately 7,000 miles, the engine developed a knocking noise and was determined to require complete replacement. I brought the vehicle to the dealership on May 19, 2025, and it remained there until September 17, 2025—nearly four months—while the replacement engine was obtained and installed. Since receiving the replacement engine, I have driven approximately 6,000 miles. On August 4, 2026, I was informed by the dealership that the replacement engine has also failed and requires another complete engine replacement. This means my vehicle has now experienced two major engine failures at extremely low mileage, including failure of the replacement engine. I understand that the 6.2L L87 engine has been subject to a GM recall involving potential engine failure and loss of propulsion. I have now learned that NHTSA has escalated its investigation into continued failures involving these engines, including failures occurring after the recall remedy. My experience appears directly relevant to that investigation. I regularly transport my children in this vehicle and am extremely concerned about the possibility of an engine failure occurring while traveling at highway speeds or with my family in the vehicle. I feel fortunate that the previous failures did not occur under those circumstances. I have contacted GM and requested that they repurchase or replace my vehicle. GM denied my request and has refused to provide me with a reason for the denial. I am asking NHTSA to document my complaint and investigate whether the existing recall remedy is adequately addressing the underlying safety defect, particularly given that my replacement engine failed after only approximately 6,000 miles.I can provide repair orders, recall documentation, mileage records, and correspondence with GMC
NHTSA complaint #11758697 — an unverified report by a vehicle owner.
Pewaukee, WI
ENGINE
I am writing to report my 2021 GMC Yukon Denali. This vehicle recently suffered a catastrophic failure of its 6.2L V8 engine while traveling on the freeway with my family inside, creating a severe and terrifying safety hazard. This failure occurred after my vehicle was supposedly remedied under GM’s official safety recall for the known L87 engine defect (Recall N252494001). As the National Highway Traffic Safety Administration's (NHTSA) recently escalated Engineering Analysis reflects, the recall inspection and 0W-40 oil remedy are failing to prevent these engines from destroying themselves. My experience is direct evidence of this continued safety defect. GM has since now fully replaced my engine however only reimbursed me 30% of what it cost to tow to their dealership. Thank you for your consideration.
NHTSA complaint #11758771 — an unverified report by a vehicle owner.
Lubbock, TX
ELECTRICAL SYSTEM
As I was driving, the vehicle's air conditioning suddenly began blowing warm/hot air. Moments later, the check engine light and all electronic service stability lights illuminated on the dashboard. Simultaneously, the vehicle suffered a complete loss of electronic brake assist, resulting in an extremely hard brake pedal and a severe reduction in braking power. The vehicle also displayed a "No Drive Mode Available" message. Third-party diagnostic scanning revealed network power codes U3018, U3505, P00FF, and P0700, indicating a total loss of power to the Body Control Module (BCM). This is the second life-threatening incident with this vehicle I have experienced following a previous highway engine stall due to engine recall. The vehicle was towed to a GM dealership for diagnostic and emergency electrical repairs.
NHTSA complaint #11757731 — an unverified report by a vehicle owner.
Lubbock, TX
ENGINE
As I was driving, the vehicle's air conditioning suddenly began blowing warm/hot air. Moments later, the check engine light and all electronic service stability lights illuminated on the dashboard. Simultaneously, the vehicle suffered a complete loss of electronic brake assist, resulting in an extremely hard brake pedal and a severe reduction in braking power. The vehicle also displayed a "No Drive Mode Available" message. Third-party diagnostic scanning revealed network power codes U3018, U3505, P00FF, and P0700, indicating a total loss of power to the Body Control Module (BCM). This is the second life-threatening incident with this vehicle I have experienced following a previous highway engine stall due to engine recall. The vehicle was towed to a GM dealership for diagnostic and emergency electrical repairs.
NHTSA complaint #11757731 — an unverified report by a vehicle owner.
Lubbock, TX
SERVICE BRAKES
As I was driving, the vehicle's air conditioning suddenly began blowing warm/hot air. Moments later, the check engine light and all electronic service stability lights illuminated on the dashboard. Simultaneously, the vehicle suffered a complete loss of electronic brake assist, resulting in an extremely hard brake pedal and a severe reduction in braking power. The vehicle also displayed a "No Drive Mode Available" message. Third-party diagnostic scanning revealed network power codes U3018, U3505, P00FF, and P0700, indicating a total loss of power to the Body Control Module (BCM). This is the second life-threatening incident with this vehicle I have experienced following a previous highway engine stall due to engine recall. The vehicle was towed to a GM dealership for diagnostic and emergency electrical repairs.
NHTSA complaint #11757731 — an unverified report by a vehicle owner.
Somerville, TN
ENGINE
The vehicle was driving down the highway when the oil pressure instantly dropped. 2021 Yukon’s safety system advised pulling over immediately, engine warning light appeared, and vehicle turned off. No prior indications of an issue. It would not restart and was towed to mechanic. Independent service center diagnosed issue as a broken crank shaft. It now needs the engine replaced and does not fall under the recall vin numbers acknowledged for the same issue.
NHTSA complaint #11756557 — an unverified report by a vehicle owner.
Boerne, TX
VEHICLE SPEED CONTROL
On July 28, 2026, while traveling on vacation with my family, our vehicle experienced a catastrophic engine failure. There were warning lights displayed for 30 seconds prior to the engine failure. On July 23, 2026, one day before taking the vehicle to the dealership, the following warning indicators appeared on the dashboard and then disappeared: “Service ESC,” “Service Traction Control,” and a flashing engine light. We took the vehicle to the dealership on July 24, 2026, because we wanted to be proactive and ensure that the vehicle was safe to operate. The dealership inspected the vehicle but reported that no diagnostic trouble codes were identified and no issue was found. We picked the vehicle up from the dealership on the evening of July 27, 2026. On July 28, 2026, while traveling on the highway approximately 2.5 hours from home, the same warning messages appeared on the dashboard again. Because we were traveling at highway speeds and vehicle speed management was becoming an issue, I immediately exited the highway and stopped in a parking area. I placed the vehicle in park, at which point the engine began idling extremely rough. I could feel the vehicle shaking while sitting in the driver's seat. I exited the vehicle to open the hood, but before I was able to do so, I noticed gray smoke coming from the exhaust. We located a GMC dealership approximately two miles away. Because of the vehicle's condition, we drove there slowly on the frontage road at approximately 15 mph and dropped the vehicle off for diagnostic inspection. The GMC dealership subsequently diagnosed the vehicle with catastrophic engine failure and recommended that the engine be replaced. The vehicle remains at the dealership and is available for inspection.We made a reasonable effort to have the vehicle inspected before our trip because we were concerned about the warning indicators and wanted to ensure that the vehicle was safe to travel.
NHTSA complaint #11756194 — an unverified report by a vehicle owner.
Boerne, TX
ENGINE
On July 28, 2026, while traveling on vacation with my family, our vehicle experienced a catastrophic engine failure. There were warning lights displayed for 30 seconds prior to the engine failure. On July 23, 2026, one day before taking the vehicle to the dealership, the following warning indicators appeared on the dashboard and then disappeared: “Service ESC,” “Service Traction Control,” and a flashing engine light. We took the vehicle to the dealership on July 24, 2026, because we wanted to be proactive and ensure that the vehicle was safe to operate. The dealership inspected the vehicle but reported that no diagnostic trouble codes were identified and no issue was found. We picked the vehicle up from the dealership on the evening of July 27, 2026. On July 28, 2026, while traveling on the highway approximately 2.5 hours from home, the same warning messages appeared on the dashboard again. Because we were traveling at highway speeds and vehicle speed management was becoming an issue, I immediately exited the highway and stopped in a parking area. I placed the vehicle in park, at which point the engine began idling extremely rough. I could feel the vehicle shaking while sitting in the driver's seat. I exited the vehicle to open the hood, but before I was able to do so, I noticed gray smoke coming from the exhaust. We located a GMC dealership approximately two miles away. Because of the vehicle's condition, we drove there slowly on the frontage road at approximately 15 mph and dropped the vehicle off for diagnostic inspection. The GMC dealership subsequently diagnosed the vehicle with catastrophic engine failure and recommended that the engine be replaced. The vehicle remains at the dealership and is available for inspection.We made a reasonable effort to have the vehicle inspected before our trip because we were concerned about the warning indicators and wanted to ensure that the vehicle was safe to travel.
NHTSA complaint #11756194 — an unverified report by a vehicle owner.
Boerne, TX
SERVICE BRAKES
On July 28, 2026, while traveling on vacation with my family, our vehicle experienced a catastrophic engine failure. There were warning lights displayed for 30 seconds prior to the engine failure. On July 23, 2026, one day before taking the vehicle to the dealership, the following warning indicators appeared on the dashboard and then disappeared: “Service ESC,” “Service Traction Control,” and a flashing engine light. We took the vehicle to the dealership on July 24, 2026, because we wanted to be proactive and ensure that the vehicle was safe to operate. The dealership inspected the vehicle but reported that no diagnostic trouble codes were identified and no issue was found. We picked the vehicle up from the dealership on the evening of July 27, 2026. On July 28, 2026, while traveling on the highway approximately 2.5 hours from home, the same warning messages appeared on the dashboard again. Because we were traveling at highway speeds and vehicle speed management was becoming an issue, I immediately exited the highway and stopped in a parking area. I placed the vehicle in park, at which point the engine began idling extremely rough. I could feel the vehicle shaking while sitting in the driver's seat. I exited the vehicle to open the hood, but before I was able to do so, I noticed gray smoke coming from the exhaust. We located a GMC dealership approximately two miles away. Because of the vehicle's condition, we drove there slowly on the frontage road at approximately 15 mph and dropped the vehicle off for diagnostic inspection. The GMC dealership subsequently diagnosed the vehicle with catastrophic engine failure and recommended that the engine be replaced. The vehicle remains at the dealership and is available for inspection.We made a reasonable effort to have the vehicle inspected before our trip because we were concerned about the warning indicators and wanted to ensure that the vehicle was safe to travel.
NHTSA complaint #11756194 — an unverified report by a vehicle owner.
at 100,000 milesIowa City, IA
ENGINE
The contact owns a 2021 GMC Yukon. The contact stated that while driving approximately 50 MPH, the check engine warning light started blinking and the vehicle started shaking violently. The vehicle was pulled over to the side of the road and turned off. The vehicle was then towed to a dealer where it was diagnosed with a stuck lifter. The contact was informed that the lifters needed to be replaced. The vehicle was not repaired. The contact believed that the failure was associated with an undisclosed recall number. The manufacturer was notified of the failure. The failure mileage was approximately 100,000.
NHTSA complaint #11753973 — an unverified report by a vehicle owner.
at 78,000 milesSan Clementinte, CA
POWER TRAIN
The contact owns a 2021 GMC Yukon. The contact stated that while driving at undisclosed speeds, the transmission was shifting hard, with severe vibrations and shuddering. The vehicle was taken to the local mechanic, who confirmed the failure and advised the contact to take the vehicle to the local dealer. The vehicle was taken to the local dealer, and the failure was confirmed, but the vehicle was not repaired. The contact stated that the vehicle was previously serviced under NHTSA Campaign Number: 24V797000 (POWER TRAIN); however, the failure occurred. The manufacturer was notified of the failure, but no assistance was offered. The contact stated that the manufacturer had issued a special coverage associated with the failure but offered no assistance. There was no fault code retrieved associated with the previous software update that was performed under the recall campaign. The failure mileage was 78,000.
NHTSA complaint #11753505 — an unverified report by a vehicle owner.
at 86,000 milesAndover, MA
ENGINE AND ENGINE COOLING
The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, there was a misfire coming from the vehicle, the vehicle was shaking and vibrating abnormally before the vehicle went into LIMP Mode. The traction control light and other unknown warning lights were illuminated on the instrument panel. The vehicle was taken to a dealer to be diagnosed. The vehicle was diagnosed with a lifter failure inside the engine. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 86,000.
NHTSA complaint #11753121 — an unverified report by a vehicle owner.
at 86,000 milesAndover, MA
TRACTION CONTROL SYSTEM
The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, there was a misfire coming from the vehicle, the vehicle was shaking and vibrating abnormally before the vehicle went into LIMP Mode. The traction control light and other unknown warning lights were illuminated on the instrument panel. The vehicle was taken to a dealer to be diagnosed. The vehicle was diagnosed with a lifter failure inside the engine. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 86,000.
NHTSA complaint #11753121 — an unverified report by a vehicle owner.
Bella Vista, AR
ENGINE
Knocking sound and flashing engine light came on. When brought to dealership it was determined that lower bearing failure took place requiring full engine replacement. '
NHTSA complaint #11752786 — an unverified report by a vehicle owner.
Higbee, MO
STEERING
The power steering went out. The dealership said it's the rack and pinion. This part is not available anywhere in the United States. I have been waiting over 3 weeks. I feel the part is unavailable as there is an issue with the rack and pinion and others who have the same vehicle ran into the same problem.
NHTSA complaint #11752500 — an unverified report by a vehicle owner.
at 102,000 milesChesapeake, VA
ENGINE
The contact owns a 2021 GMC Yukon. The contact stated that while driving at slow speeds from 2 - 30 MPH, the vehicle hesitated and bucked while accelerating and switching between 4- and 8-cylinders operation. The vehicle was taken to the local mechanic who installed a part used to override the engine cylinder mode, and the engine only operated using 8 cylinders. No further information was available. The manufacturer and local dealer were not contacted about the failure. The failure mileage was 102,000.
NHTSA complaint #11751456 — an unverified report by a vehicle owner.
Toledo, OH
ENGINE
Seems to be not accelerating properly as if the propulsion is not there. Also, when switching gears it seems as if it is slipping or missing to keep up with the propulsion. Lastly, riding with windows down on the highway alongside the concrete median, I can hear like metal clanking or rubbing against one another. Also, I get an oil change at George Ballas GMC on [XXX] and 3 weeks later truck says change oil soon. AND YES THEY RESET THE OIL LIGHT AND I DROVE IT FOR 3 WEEKS AND THE LIGHT POPPED ON!!!! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11750280 — an unverified report by a vehicle owner.
Toledo, OH
FUEL/PROPULSION SYSTEM
Seems to be not accelerating properly as if the propulsion is not there. Also, when switching gears it seems as if it is slipping or missing to keep up with the propulsion. Lastly, riding with windows down on the highway alongside the concrete median, I can hear like metal clanking or rubbing against one another. Also, I get an oil change at George Ballas GMC on [XXX] and 3 weeks later truck says change oil soon. AND YES THEY RESET THE OIL LIGHT AND I DROVE IT FOR 3 WEEKS AND THE LIGHT POPPED ON!!!! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11750280 — an unverified report by a vehicle owner.
at 127,000 milesAkron, OH
ENGINE
The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, the vehicle made an abnormal sound and failed to accelerate above 25 MPH. No warning light was illuminated. The vehicle was taken to an independent mechanic, who determined that there was metal in the engine and that the engine needed to be replaced. The vehicle was then taken to the dealer, where it remained for eight months before the engine was replaced. The manufacturer was made aware of the failure. The failure mileage was approximately 127,000.
NHTSA complaint #11749937 — an unverified report by a vehicle owner.
at 59,800 milesBarneveld, NY
FUEL SYSTEM, GASOLINE
The contact owns a 2021 GMC Yukon. The contact stated that the vehicle failed to start. No warning lights illuminated. The vehicle was towed to the dealer, where it was diagnosed that the fuel pump module needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure, and a complaint was filed. The failure mileage was 59,800.
NHTSA complaint #11749507 — an unverified report by a vehicle owner.
Port Saint Lucie, FL
ENGINE
I bought the vehicle used with 40,000 miles it’s has 100,856 now the engine shot off while I was driving and brought it to the GMC dealer that GM instructed me to the dealer had me pay 284.95 for inspection and then try to charge me 1284.95 for a complete tar down of the engine because of misfiring and ESC error codes.
NHTSA complaint #11747447 — an unverified report by a vehicle owner.
I bought the vehicle used with 40,000 miles it’s has 100,856 now the engine shot off while I was driving and brought it to the GMC dealer that GM instructed me to the dealer had me pay 284.95 for inspection and then try to charge me 1284.95 for a complete tar down of the engine because of misfiring and ESC error codes.
NHTSA complaint #11747447 — an unverified report by a vehicle owner.
Port Saint Lucie, FL
BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
I bought the vehicle used with 40,000 miles it’s has 100,856 now the engine shot off while I was driving and brought it to the GMC dealer that GM instructed me to the dealer had me pay 284.95 for inspection and then try to charge me 1284.95 for a complete tar down of the engine because of misfiring and ESC error codes.
NHTSA complaint #11747447 — an unverified report by a vehicle owner.
Lebanon, VA
POWER TRAIN
Transmission abruptly failed after only 110k well maintained miles
NHTSA complaint #11746604 — an unverified report by a vehicle owner.
Anderson, IN
POWER TRAIN
Engine overheated and performed an emergency shutdown while driving through Atlanta on my way to vacation with my family. We lost propulsion and had to cross 5 lanes of traffic to find a shoulder to pull over to. The engine shut down and we were left stranded 500 miles from home with our 3 children in a boiling car. The vehicle was inspected and passed the recall test 6 weeks prior to this incident. After the first failure we attempted to extend our power train warranty to which we were told it had too many miles by GM. The GM dealership and service center where the vehicle was towed confirmed the engine needed to be replaced and GM confirmed it falls under their extended warranty. However, GM refuses to cover any additional expenses incurred from their engine failure.
NHTSA complaint #11746548 — an unverified report by a vehicle owner.