GMC Complaints

The contact owns a 2022 GMC Sierra 1500. The contact stated that while attempting to start the vehicle, the check engine warning light illuminated. A dealer was contacted. The vehicle was taken to an independent mechanic to be diagnosed, and DTC: P0449 and P0498 were retrieved. The vehicle was not repaired. The contact related the failure to a Special Coverage Adjustment Program for the Evaporative Emissions Purge Pump; however, the VIN was not included in the coverage. The manufacturer was notified of the failure and informed the contact that the VIN was not under recall and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 56,418.

1. What component or system failed or malfunctioned, and is it available for inspection upon request? The engine (6.2L L87 V8) failed completely. The engine experienced knocking and rattling noises prior to the failure and then stopped functioning altogether while driving. The engine was replaced by Village Auto in Bellmore, and the failed engine is no longer available for inspection, as it was removed and replaced during the repair process. 2. How was your safety or the safety of others put at risk? The engine failure occurred while the vehicle was in motion, creating a dangerous situation where the vehicle suddenly started shaking and could not be driven. This posed a serious safety risk to me, my passengers, and other drivers on the road due to the loss of engine power, steering, and acceleration control in traffic conditions. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The issue was confirmed by an independent service center, Village Auto in Bellmore, which diagnosed the engine as irreparably damaged and requiring a full replacement. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle was not inspected by General Motors, police, or insurance representatives. Insurance would not cover this issue and General Motors failed to take responsibility for a fault in the engine. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No - all happened at once - engine light and complete failure

The engine started making ticking sounds, then the check engine light came on on and it began running very rough. GMC dealer replaced camshaft, all 16 lifters and guides and one bent push rod. The repair (not including transportation - I had to leave in GallupNM when I was enroute to Minnesota) cost was $7,832.81. The vehicle has 93,000 miles

Since we purchased this vehicle, we have continually had issues with our brakes to include dragging of the front brakes and brakes squealing when they are in use. We have brought the vehicle multiple times to the GMC dealership who is able to replicate the issue, but states that this is normal. I have filed a complaint with the GMC and they said that this is normal even though they admitted to fixing the problem in 2025 models. Per GMC, they will not be stand behind their product unless the national traffic safety issue administration tells them they need to. This is very frustrating as if you do a search online you will find many other consumers with the same vehicle and same issue with no resolution, this is a safety concern that the brakes are not functioning properly as well as the front brakes also caused an issue with a sensor in my car. They fixed the sensor are unable to fix the front brake issue Due to no recalls or issues given to them by the national traffic safety. GMC will not make any fixes as they consider this normal.

Engine failed December 2024 at 140,274 miles. 2 cylinders failed due to lifter failure and had a total loss of power. Engine was replaced by a local shop.

On May 23, 2025, I purchased a 2023 GMC Yukon XL VIN: [XXX] from the GMC dealership.? At the time of sale, I specifically asked about the active GM engine recall. They assured me the vehicle had been inspected and was unaffected. On October 30, 2025, the engine catastrophically failed on a highway while my family — including my two small children — were in the vehicle. This created a dangerous emergency situation as I had to avoid high-speed traffic. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle has issue turning at times message on dash says reduced steering had trouble turning and almost caused a accident

I purchased a 2018 GMC Sierra 1500 6.2 Denali new. I followed all service requirements including oil changes by GM dealerships. 2025 i noticed my truck power was decreasing. Than I started to hear knocking noses. I took it to a dealership for diagnosis but they couldn't identify anything. Finally it started to skip this is when a dealership diagnose it as being an issue with the active fuel management system. They said my lifters, camshaft, and various other parts was damaged and had to be replaced. Additionally, they said it was a recall on 6.2 engines with the same identical issue but my year wasn't included. The cost to repair approximately 10,000. I really need your attention to this matter! September 10, 2025 my truck placed me and others in danger when it lose engine power. Also my engine light was on for the first time.

The contact owns a 2015 GMC Canyon. The contact stated that while driving at various speeds, the steering wheel locked up. The contact used force to steer the vehicle. The message "Check Power Steering" was displayed. The local dealer was contacted; however, the dealer refused to diagnose the vehicle unless the contact paid for the diagnostic test. The vehicle was not repaired. The failure persisted and became progressively worse. The vehicle was repaired under NHTSA Campaign Number: 21V213000 (STEERING); but the failure persisted. The manufacturer was not notified of the failure. The failure mileage was approximately 115,000.

URGENT SAFETY DEFECT — RECURRING “SHIFT TO PARK” — ROLLAWAY RISK Vehicle: GMC Acadia | ~99,684miles Same defect repaired FREE under GM goodwill in 2021 (shifter replacement, TSB 19-NA-206) after 4 failed attempts. Now FAILED AGAIN in 2025 — vehicle will not shut off, drains battery, risks unintended rollaway. GM dealer refuses repeat coverage despite prior admission of defect. This is a KNOWN DESIGN FLAW — thousands of complaints — NO RECALL. DEMAND IMMEDIATE SAFETY RECALL — this is a fire/rollaway hazard. Attached: 2019- 2021 repair order ($0), TSB 19-NA-206, prior NHTSA complaint, previous TAC CASE: 9-6623251184.