Owners have filed 190 complaints
about the 2024 Chevrolet Colorado with NHTSA between 2024 and 2026.
The largest single group is the driver assist & collision avoidance.
Across this model's run it ranks 7 of 21 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 — 40
Against the median year of the Chevrolet Colorado. 50 means typical for this
model; 100 means roughly double.
Severity — 63
12.1% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 100
96% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
How 2024 compares with every other Chevrolet Colorado
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
1535.7%
Warnings
1126.2%
Adaptive Cruise Control
49.5%
Blind Spot Detection
49.5%
Body
37.1%
Instrument Cluster/Panel
24.8%
Turn Signal
24.8%
Warning
12.4%
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
416.0%
1,000 – 9,999 miles
1664.0%
10,000 – 24,999 miles
416.0%
50,000 – 74,999 miles
14.0%
NHTSA crash tests
The agency crash-tested this model year itself. These are its own
photographs and star ratings.
Frontal crash test
Side barrier crash test
Side pole crash test
Photographs taken by NHTSA during its own New Car Assessment Program crash
tests of this model year. Public domain.
Configuration
Overall
Front
Side
Rollover
2024 Chevrolet Colorado PU/CC 4WD
2024 Chevrolet Colorado PU/CC RWD
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.
Mar 2024peak 23Sep 2026
NHTSA investigations into the 2024 Chevrolet Colorado
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.
1
investigation is
still open.
EA26006Opened 21 Aug 2026Still openSERVICE BRAKES
Electronic Brake Module Component Failure
On April 11, 2024, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE24011 after receiving complaints concerning a loss of brake assist in 2023 MY Cadillac Lyriq vehicles. These complaints allege a hard brake pedal, followed by a “Brake System Failure” message at start up or while driving. GM shared records regarding several internal investigations for loss of brake assist due to alleged spindle fractures in the eBoost system. GM has stated that in the event of a spindle fracture, anti-lock brakes (ABS), stability control, and traction control remain functional until th...
Recalls on the 2024 Chevrolet Colorado
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
24V703000
SEAT BELTS:CRITICAL FASTENERS
General Motors, LLC (GM) is recalling certain 2023-2024 Chevrolet Colorado and 2023 GMC Canyon vehicles. The left or right front seat may have a seat belt buckle attachment bolt that was not tightened properly.
Risk: A loose seat belt may not properly restrain an occupant in a crash, increasing the risk of injury.
24V491000
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
General Motors, LLC (GM) is recalling certain 2024 Chevrolet Colorado and GMC Canyon vehicles. The lock ring that secures the fuel pump to the fuel tank assembly may not have been fully locked during assembly, which can result in a fuel leak during a crash.
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
24V366000
TIRES
General Motors, LLC (GM) is recalling certain 2024 Chevrolet Colorado vehicles. Incorrect tires may have been installed that do not match the tire label, and the tire pressure monitoring system (TPMS) may provide inaccurate information for the installed tires. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 110, "Tire Selection and Rims" and 138, "Tire Pressure Monitoring Systems."
Risk: A tire label that does not accurately reflect the installed tires may result in the installation of incorrectly sized tires. In addition, the TPMS may not warn the driver of a drop in tire pressure. Both of these scenarios can increase 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 202641434,508 units in Canada
Airbag
Issue: On certain vehicles, the airbag status indicator for the passenger airbag may not meet certain requirements of Canadian regulations. Safety Risk: This small error does not affect safety. Corrective Actions: This is not a recall. General Motors has made changes to ensure that all new vehicles meet Canadian regulations.
Recall 20243751,274 units in Canada
Fuel System
Issue: On certain vehicles, the lock ring that secures the fuel pump to the fuel tank may not have been locked properly. As a result, the lock ring could loosen and create a fuel leak. Safety Risk: A fuel leak can create the risk of a fire. Corrective Actions: General Motors will notify owners by mail and advise you to take your vehicle to a dealership to inspect and, if necessary, lock the fuel tank lock ring.
Reports where the owner recorded a crash, a fire, an injury or a death.
Beaver, PACrash1 injured
SERVICE BRAKES
The vehicle is registered to me; my mother was the driver at the time of the failure. At ~2,963 miles, the truck developed intermittent check engine and ABS warning lights. The dealer pulled DTC C058A (brake system control module) and P25A2. Per GM bulletin PIT6012A, the battery was replaced and a brake plunger motor sensor learn was performed. The same codes returned within weeks. The dealer then diagnosed internal failure of the brake master cylinder and reservoir, documented the vehicle as "unsafe to drive," and replaced both under warranty. The truck sat at the dealer over six weeks due to a nationwide parts backorder. Repairs were completed April 4, 2025. On May 2, 2025, at ~6,500 miles, the driver was traveling downhill on a city street in the rain at roughly 20 mph. The brake pedal suddenly became hard and resistant. Despite full-force pedal pressure, the vehicle could not be stopped. It entered an intersection, struck another vehicle, then struck a tree. Front and side airbags deployed; the vehicle was totaled. The driver sustained a concussion, broken finger, and severe back and knee injuries, was transported by ambulance, and required months of concussion treatment including vestibular therapy. The hard, resistant pedal is consistent with failure of the electronic brake boost assist (eBoost) system, leaving only unassisted hydraulic braking (roughly 4–5x normal pedal force). This matches other owner reports and the class action in Barron et al. v. GM LLC, which cites defective master cylinders with a missing internal cartridge seal on the same platform. The vehicle is no longer available for inspection. The driver was concussed with significant short-term memory loss at the scene; statements in the police report may not reflect the mechanical failure. Full police report available on request (exceeds 10 MB limit).
NHTSA complaint #11732446 — an unverified report by a vehicle owner.
Los Angeles, CA1 injured
SERVICE BRAKES
there have about 4 incidents where my vehicle has engaged the automatic emergency breaks while I’m driving, even though there are no cars around me close enough to cause that reaction. called 911 on most recent incident to get medical evaluation to check chest from seat belt sudden locking
NHTSA complaint #11722333 — an unverified report by a vehicle owner.
there have about 4 incidents where my vehicle has engaged the automatic emergency breaks while I’m driving, even though there are no cars around me close enough to cause that reaction. called 911 on most recent incident to get medical evaluation to check chest from seat belt sudden locking
NHTSA complaint #11722333 — an unverified report by a vehicle owner.
at 14,152 milesPikeville, TNCrash1 injured
SEAT BELTS
The contact owns a 2024 Chevrolet Colorado. The contact stated that while his employee was driving at 55 MPH, the vehicle hit a deer, but the seat belt did not hold the driver in place. The contact stated that the driver's left side of her chest hit the steering wheel, she hit her head hit the windshield, and when the seatbelt retracted, the driver was pulled back to the seat with force. Additionally, the contact stated that the lap band of the seat belt tightened during the impact and bruised her lower stomach. The air bags did not deploy. The vehicle was knocked into the ditch, and then the vehicle was steered to the side of the road. Medical attention was needed. A police report was filed. The vehicle was taken to a dealer, where it has not been diagnosed as of yet. The manufacturer was notified of the failure. The failure mileage was approximately 14,152.
NHTSA complaint #11694465 — an unverified report by a vehicle owner.
at 14,152 milesPikeville, TNCrash1 injured
AIR BAGS
The contact owns a 2024 Chevrolet Colorado. The contact stated that while his employee was driving at 55 MPH, the vehicle hit a deer, but the seat belt did not hold the driver in place. The contact stated that the driver's left side of her chest hit the steering wheel, she hit her head hit the windshield, and when the seatbelt retracted, the driver was pulled back to the seat with force. Additionally, the contact stated that the lap band of the seat belt tightened during the impact and bruised her lower stomach. The air bags did not deploy. The vehicle was knocked into the ditch, and then the vehicle was steered to the side of the road. Medical attention was needed. A police report was filed. The vehicle was taken to a dealer, where it has not been diagnosed as of yet. The manufacturer was notified of the failure. The failure mileage was approximately 14,152.
NHTSA complaint #11694465 — an unverified report by a vehicle owner.
Springfield, TNFire1 injured
UNKNOWN OR OTHER
I was driving the truck and first I got a "Software Update Needed Vehicle must be parked and off" this was followed quickly be a "low tire pressure alarm" 3 times in a short distance then I got a message "Antilock brake issue do not drive over 62 MPH or vehicle may not stop" then the brakes began to randomly slam on and release and smoke began to come out of the air vents. The next alarm was "ESV Shutting down " and I lost power steering and brakes; I tried getting the vehicle off the road out of the traffic lanes and the smoke was rapidly increasing in the cab then the engine shut down and I did my best to get the truck out of the traffic lanes and flames started coming from under the hood. A man stopped to help me out of the truck and by then the engine compartment was fully involved quickly and spreading into the interior of the cab. This all happened on country roads at about 40 MPH. I went to the medical center 2 days later as I was still having problems breathing from all the smoke. This was a new truck I bought in early November and only had 6900 miles on it.
NHTSA complaint #11662746 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Des Arc, AR
UNKNOWN OR OTHER
I bought this vehicle late June 2026 and it is currently September 1 2026 and last week I encountered a check engine light. Its already having coolant issues. Way too early for something like this. Only 64,000 miles.
NHTSA complaint #11761419 — an unverified report by a vehicle owner.
Durango, CO
STRUCTURE:BODY
The windshield cowl and trim pieces keel breaking. If I didn't keep an eye on them they would just end up flying off causing road debris or projectiles
NHTSA complaint #11761035 — an unverified report by a vehicle owner.
Durango, CO
ENGINE
Engine cooling system has a known leak. It is rather expensive out of pocket and although there is now a tsb the tsb does not cover the danger of overheating an engine and being stranded on the side of the road. Also the coolant leaking causes an unseen hazard by polluting water supplies with one of the more known toxins to the water and environment.
NHTSA complaint #11761036 — an unverified report by a vehicle owner.
Massapequa, NY
ELECTRICAL SYSTEM
While driving home multiple lights,messages and sounds came on the dashboard. I stepped on the brake and there were no brakes. I put vehicle in neutral and pumped brakes a few times. I was not traveling that fast so the vehicle stopped before I hit the person in front of me. I drove 10 mpg with my hazards on to the nearest gas station. I called Chevy service and they sent a tow truck N/C to bring to the dealer.
NHTSA complaint #11760580 — an unverified report by a vehicle owner.
Massapequa, NY
SERVICE BRAKES
While driving home multiple lights,messages and sounds came on the dashboard. I stepped on the brake and there were no brakes. I put vehicle in neutral and pumped brakes a few times. I was not traveling that fast so the vehicle stopped before I hit the person in front of me. I drove 10 mpg with my hazards on to the nearest gas station. I called Chevy service and they sent a tow truck N/C to bring to the dealer.
NHTSA complaint #11760580 — an unverified report by a vehicle owner.
Pittsburgh, PA
ENGINE
I was told that my vehicle has a bent exhaust valve, which has caused irreparable damage to the engine and requires a complete engine replacement. The dealership could not determine what caused the valve to bend, but they indicated that it could potentially be a manufacturing defect, although they could not confirm that. My vehicle has now been at the Chevy dealership for more than 30 days, and I was informed that there are currently no replacement engines available from the factory due to a shortage. Given that this appears to be a known parts shortage, I assume other owners of the same make and model may be experiencing similar issues, although I cannot confirm that. The vehicle has approximately 10,000 miles on it.
NHTSA complaint #11760284 — an unverified report by a vehicle owner.
Chapel Hill, NC
SERVICE BRAKES
Was on a trip and on the highway home the service break lights came on. By the time we got home(less than 200 miles) the breaks where scraping the calipers. Truck only had 25,586 miles on it when they picked it up to take to the shop. Dealership had to replace the break pads, calipers and rotor on the front driver side.
NHTSA complaint #11759461 — an unverified report by a vehicle owner.
St Johns, FL
SERVICE BRAKES
I purchased this truck new in March of 2024, in May I was at a Starbucks drive-thru and lost all brakes. While slowing down at the window the pedal went to the floor and my dash light up like a Christmas tree. I pulled into a parking spot and shut the truck off for about 5 minutes. When I turned the truck back on the lights were gone and the truck seemed fine, so I drove home. The next day I was picking up my kids from school when in the pickup line the same issue happened. I lost my brakes, the dash lit up, and the truck started rolling forward in the pickup line. I had to push on the brake pedal as hard as I could to make the truck stop. I called the dealer and had the truck taken there. The truck was there for several days and I was told the master cylinder and brake control module were replaced. I’m reporting this now, because I saw that this is part of a larger issue being reported and I wanted my experience memorialized to help others.
NHTSA complaint #11759152 — an unverified report by a vehicle owner.
Valparaiso, IN
ELECTRICAL SYSTEM
The turn signal has an intermittent condition. When I put the right turn signal indicator on to signal a right turn, after the turn is completed and the turn signal stick returns to the off position my left turn signal with signal a left turn flashing approximately 2-3 times before turning off. I took it to the local Chevrolet dealer maintenance shop and they told me the replaced the turn signal stick, however a few days later the same problem occurred again. I have also learned online that other owners have had the same issue with their Colorado pickup trucks also.
NHTSA complaint #11746174 — an unverified report by a vehicle owner.
Bradenton, FL
POWER TRAIN
Vehicle intermittently lunges forward during the 2nd-to-1st downshift, even while the brakes are being applied. When this occurs, the vehicle unexpectedly accelerates or surges forward slightly, travels farther than anticipated, and feels similar to being bumped from behind. Because the condition occurs at low speeds, often in tight areas such as parking spaces, stop-and-go traffic, or before a crosswalk, it creates a risk of collision with pedestrians, vehicles, or objects. The issue has been reported to Cox Chevrolet in Bradenton, Florida multiple times, but continues to happen.
NHTSA complaint #11741859 — an unverified report by a vehicle owner.
Bradenton, FL
VEHICLE SPEED CONTROL
Vehicle intermittently lunges forward during the 2nd-to-1st downshift, even while the brakes are being applied. When this occurs, the vehicle unexpectedly accelerates or surges forward slightly, travels farther than anticipated, and feels similar to being bumped from behind. Because the condition occurs at low speeds, often in tight areas such as parking spaces, stop-and-go traffic, or before a crosswalk, it creates a risk of collision with pedestrians, vehicles, or objects. The issue has been reported to Cox Chevrolet in Bradenton, Florida multiple times, but continues to happen.
NHTSA complaint #11741859 — an unverified report by a vehicle owner.
Bradenton, FL
UNKNOWN OR OTHER
The turn signal system intermittently malfunctions. When using the turn signal, the auto-cancel function sometimes activates the opposite signal, and at times the stalk does not stay engaged when attempting to signal. This creates a safety risk because surrounding drivers may receive the wrong turning/lane-change indication or no indication at all. The issue has occurred intermittently while driving and has been presented to Cox Chevrolet in Bradenton, Florida multiple times. Cox Chevrolet has verified turn-signal over-cancel and performed prior repairs/programming. However, the issue has not been entirely resolved and continues to occur intermittently. No crash or injury has occurred, but the condition creates a risk of collision during turns, merges, and lane changes
NHTSA complaint #11741857 — an unverified report by a vehicle owner.
Bradenton, FL
EXTERIOR LIGHTING
The turn signal system intermittently malfunctions. When using the turn signal, the auto-cancel function sometimes activates the opposite signal, and at times the stalk does not stay engaged when attempting to signal. This creates a safety risk because surrounding drivers may receive the wrong turning/lane-change indication or no indication at all. The issue has occurred intermittently while driving and has been presented to Cox Chevrolet in Bradenton, Florida multiple times. Cox Chevrolet has verified turn-signal over-cancel and performed prior repairs/programming. However, the issue has not been entirely resolved and continues to occur intermittently. No crash or injury has occurred, but the condition creates a risk of collision during turns, merges, and lane changes
NHTSA complaint #11741857 — an unverified report by a vehicle owner.
Bradenton, FL
ELECTRICAL SYSTEM
The turn signal system intermittently malfunctions. When using the turn signal, the auto-cancel function sometimes activates the opposite signal, and at times the stalk does not stay engaged when attempting to signal. This creates a safety risk because surrounding drivers may receive the wrong turning/lane-change indication or no indication at all. The issue has occurred intermittently while driving and has been presented to Cox Chevrolet in Bradenton, Florida multiple times. Cox Chevrolet has verified turn-signal over-cancel and performed prior repairs/programming. However, the issue has not been entirely resolved and continues to occur intermittently. No crash or injury has occurred, but the condition creates a risk of collision during turns, merges, and lane changes
NHTSA complaint #11741857 — an unverified report by a vehicle owner.
Bradenton, FL
FUEL/PROPULSION SYSTEM
Vehicle intermittently lunges forward during the 2nd-to-1st downshift, even while the brakes are being applied. When this occurs, the vehicle unexpectedly accelerates or surges forward slightly, travels farther than anticipated, and feels similar to being bumped from behind. Because the condition occurs at low speeds, often in tight areas such as parking spaces, stop-and-go traffic, or before a crosswalk, it creates a risk of collision with pedestrians, vehicles, or objects. The issue has been reported to Cox Chevrolet in Bradenton, Florida multiple times, but continues to happen.
NHTSA complaint #11741859 — an unverified report by a vehicle owner.
Kearney, MO
UNKNOWN OR OTHER
My dog and I were headed to Home Depot on [XXX] when without any warning there was a very loud boom. My first thought was that we had been shot at. Once I gathered myself I realized the sunnroof glass had exploded. I rarely open the sunroof but do on occasion have the shade open, luckily it wasn’t open or my dog and I would have been sprayed with the glass which could have caused serious eye injury and potentially a crash. I’ve had 2 Chevy dealers tell me that is not a warranty issue that it was likely caused by a rock being thrown up. I do not believe this was the case. The closest vehicle was some 500 feet in front of us. Because it was such a violent explosion I believe it was a pressure explosion. I am also very surprised that the glass is tempered and not laminated. I have insurance so I’m not concerned with getting it repaired. I just want you to know I think it a very serious issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11741055 — an unverified report by a vehicle owner.
at 8,400 milesAmsterdam, NY
ELECTRICAL SYSTEM
The contact owns a 2024 Chevrolet Colorado. The contact stated that while driving on several occasions at various speeds, and the brake pedal was depressed the pedal remained floored. The contact stated that the vehicle eventually slowed down on its own and came to a complete stop. The was towed to a dealer where it was diagnosed that the master cylinder needed to be replaced. The vehicle was repaired but the failure reoccurred a little over a month later. The vehicle was towed back to the same dealer where it was diagnosed that the battery was dead and the battery needed to be replaced. The vehicle was repaired but the failure reoccurred approximately 17 days later. The vehicle was taken to the same dealer where it was diagnosed that the drivers door wire harness needed to be replaced due to an electrical issue that killed the battery. The vehicle was repaired but the failure reoccurred approximately four months later. The vehicle was towed to the same dealer where the vehicle has yet to be diagnosed as of yet. The manufacturer notified of the failure. The failure mileage was approximately 8,400.
NHTSA complaint #11740148 — an unverified report by a vehicle owner.
at 8,400 milesAmsterdam, NY
SERVICE BRAKES
The contact owns a 2024 Chevrolet Colorado. The contact stated that while driving on several occasions at various speeds, and the brake pedal was depressed the pedal remained floored. The contact stated that the vehicle eventually slowed down on its own and came to a complete stop. The was towed to a dealer where it was diagnosed that the master cylinder needed to be replaced. The vehicle was repaired but the failure reoccurred a little over a month later. The vehicle was towed back to the same dealer where it was diagnosed that the battery was dead and the battery needed to be replaced. The vehicle was repaired but the failure reoccurred approximately 17 days later. The vehicle was taken to the same dealer where it was diagnosed that the drivers door wire harness needed to be replaced due to an electrical issue that killed the battery. The vehicle was repaired but the failure reoccurred approximately four months later. The vehicle was towed to the same dealer where the vehicle has yet to be diagnosed as of yet. The manufacturer notified of the failure. The failure mileage was approximately 8,400.
NHTSA complaint #11740148 — an unverified report by a vehicle owner.
Charlotte, NC
UNKNOWN OR OTHER
Check engine light came on and the dealership said it was because the coolant was low due to the radiator hose leaking. I was told by the actual mechanic that they’ve had to do a lot of radiator hoses and that it is a known defect with the Colorados and the traverses but that GM hasn’t done a recall on them yet. That is what brings me here. My truck is only 2 years old and this shouldn’t be happening right now. Thank you for taking the time to review this and I hope GM addresses the matter promptly.
NHTSA complaint #11738351 — an unverified report by a vehicle owner.
Cheney, WA
UNKNOWN OR OTHER
The upper radiator hose on some huge percentage of these trucks fail (mine has failed at just over 35k miles). You can check the Colorado Chevy forum, youtube, etc., et al, and find plenty of instances where this has failed. As this is the cooling system, it can cause the engine to overheat and potentially ruin the engine. The flaw seems to be an engineering issue with the rubber seal they use (instead of a high quality o-ring) to seal the upper hose to the radiator. Additionally, since this can cause engine failure it should be addressed immediately. Instead, my local Chevy dealer, since its not a recall item, said they could schedule a time next week for me to LEAVE the truck and then they would get to it in 7-10 days. This is extremely unfair to the consumer who depends on these vehicles. This should absolutely be a recall item. You can find 1000's of examples online and if you can pull GM repair data, I'm sure you'll find 1000's more.
NHTSA complaint #11737678 — an unverified report by a vehicle owner.
Cheney, WA
ENGINE
The upper radiator hose on some huge percentage of these trucks fail (mine has failed at just over 35k miles). You can check the Colorado Chevy forum, youtube, etc., et al, and find plenty of instances where this has failed. As this is the cooling system, it can cause the engine to overheat and potentially ruin the engine. The flaw seems to be an engineering issue with the rubber seal they use (instead of a high quality o-ring) to seal the upper hose to the radiator. Additionally, since this can cause engine failure it should be addressed immediately. Instead, my local Chevy dealer, since its not a recall item, said they could schedule a time next week for me to LEAVE the truck and then they would get to it in 7-10 days. This is extremely unfair to the consumer who depends on these vehicles. This should absolutely be a recall item. You can find 1000's of examples online and if you can pull GM repair data, I'm sure you'll find 1000's more.
NHTSA complaint #11737678 — an unverified report by a vehicle owner.
Dayton, OH
ENGINE
Truck has 36,669 miles check engine light came on and was idling loud, after being looked at my a Chevrolet dealership came back a faulty radiator hose, and coolant was leaking. Too new of truck for this kind of problem
NHTSA complaint #11735626 — an unverified report by a vehicle owner.
Box Elder, MT
ENGINE
Coolant leaking from the upper radiator inlet hose connection. The Malfunction Indicator Lamp (MIL) illuminated in the Driver Information Center (DIC).
NHTSA complaint #11732332 — an unverified report by a vehicle owner.
Beaver, PACrash1 injured
SERVICE BRAKES
The vehicle is registered to me; my mother was the driver at the time of the failure. At ~2,963 miles, the truck developed intermittent check engine and ABS warning lights. The dealer pulled DTC C058A (brake system control module) and P25A2. Per GM bulletin PIT6012A, the battery was replaced and a brake plunger motor sensor learn was performed. The same codes returned within weeks. The dealer then diagnosed internal failure of the brake master cylinder and reservoir, documented the vehicle as "unsafe to drive," and replaced both under warranty. The truck sat at the dealer over six weeks due to a nationwide parts backorder. Repairs were completed April 4, 2025. On May 2, 2025, at ~6,500 miles, the driver was traveling downhill on a city street in the rain at roughly 20 mph. The brake pedal suddenly became hard and resistant. Despite full-force pedal pressure, the vehicle could not be stopped. It entered an intersection, struck another vehicle, then struck a tree. Front and side airbags deployed; the vehicle was totaled. The driver sustained a concussion, broken finger, and severe back and knee injuries, was transported by ambulance, and required months of concussion treatment including vestibular therapy. The hard, resistant pedal is consistent with failure of the electronic brake boost assist (eBoost) system, leaving only unassisted hydraulic braking (roughly 4–5x normal pedal force). This matches other owner reports and the class action in Barron et al. v. GM LLC, which cites defective master cylinders with a missing internal cartridge seal on the same platform. The vehicle is no longer available for inspection. The driver was concussed with significant short-term memory loss at the scene; statements in the police report may not reflect the mechanical failure. Full police report available on request (exceeds 10 MB limit).
NHTSA complaint #11732446 — an unverified report by a vehicle owner.
Wildwood, MO
POWER TRAIN
Check engine light with codes p0700 and p2796 has been happening for months with multiple failed repair attempts. Vehicle was returned to me by the dealer supposedly fixed. I drove it 15 minutes to the high school for an art fair my daughter was in. They (my family) rode with me home. Check engine light was on again. On the way home, the transmission was acting strange, not shifting properly. About half way home, it got stuck in a gear at 3500 or so rpms and would not shift. I tried the manual shifter, and it didn’t work. Stuck in gear. Concern was that we were approaching a hill when it did this, and I could not get the vehicle to shift to deliver the appropriate level of power I needed to ascend the hill. It thankfully did eventually shift, but it was scary for a few seconds, especially since I had my wife and all three of my kids in the vehicle. I dropped the vehicle off the next morning. It got stuck in gear at 3500 RPMS again on the way to the dealership. Two dealerships have made multiple failed attempts to fix the transmission issues. Several attempts to contact GM have gone without a response. No one in my family feels safe in the vehicle after what happened.
NHTSA complaint #11732174 — an unverified report by a vehicle owner.
