GMC Complaints

While driving on the freeway, 65 MPH, I Went to accelerate as vehicle was slowing down with no response, looked at dash and noticed vehicle was in neutral, with a message saying “restart Vehicle to shift” thankfully I was able to get over a few lanes to pull over and restart vehicle. Very scary incident while on a busy early morning commute to work.

After the air bag recall i went and had them do it and 3 days later is still coming on. Saying service air bag. And alot of people is having issues with tighen gas cap light. I have replaced everything it could be and still does it. Now i believe its a bigger problem and there is alot of ppl having the same issues. I dont remember the exact date either. This is the absolute worst vehicle ever.

Per the dealership where we purchased our vehicle, one lifter gave out and damaged the camshaft. Since there are no guarantees if we replace one lifter this will not happen again. We chose to purchase a new engine rather than purchasing a rebuilt engine. I don't know if this qualifies as a safety issue but we were afraid to drive our vehicle. It has now been at the dealership since May 15 waiting for a new engine. The following warnings showed up on our dash: leveling suspension engine failure stability control head on collision Our GMC denali has a 6.2L v8 engine

NHTSA Complaint: Campaign 25V274 Vehicle: 2024 GMC Yukon (VIN: [XXX] , 33,294 miles) GM Case #[XXX] Recall: N252494000 (NHTSA 25V274), issued April 24, 2025; related bulletins N252494001 (dealer inventory), N252494002 (engine replacement) Defect: Manufacturing defects in the 6.2L V8 (L87) engine’s connecting rod and/or crankshaft, risking engine failure and crashes. Issue: My vehicle has been at Royal Buick GMC, Inc. (355 Rte 23 N, Sussex, NJ 07461) since April 10, 2025 (104 days as of July 23, 2025). The recall remedy (inspection for DTC P0016, oil change to 0W-40 if passed, or engine replacement per N252494002 if failed) is unavailable, with no repairs performed per invoice RO# [XXX} (July 22, 2025). The dealership provided a lesser-value loaner, inadequate for a premium SUV. On July 23, 2025, at 5:03 PM EDT, the dealership texted, “Your vehicle is in the shop and should be done first thing tomorrow. I have it schedule for a wash tomorrow. I will follow up mid-afternoon on its status. ty!” Maggie stated they were waiting for the “new car shine to dry.” When asked if the engine was replaced, Maggie said it was “above her paygrade” and confirmed no solution exists, with no timeline for remedy availability. I instructed her I will not accept an unsafe vehicle and to relay this to the service manager. NHTSA.gov [XXX] ) confirms the recall is unrepaired, remedy not available. Communications with GM: July 15, 2025, 3:00 PM EDT: GM Customer Support Supervisor Rochelle confirmed no parts or resolution timeline. July 15, 2025, 3:30 PM EDT: SMS to Tom McGillis, service advisor, requesting update. No actionable GM response. July 23, 2025, 1:32 PM EDT: GM representative Cynthia stated GM had not heard from the dealership and escalated Case [XXX] to internal corporate resolution. No parts or timeline provided. Complaint: GM’s 104-day delay in providing a recall remedy (N252494000/N252494002), inadequate loaner, INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

GM is recommending that I replace my brakes for the 3rd time within 30,000 miles but cannot explain the irregular wear. I am confident that there is a larger issue causing this is the brakes failing are just a symptom of a larger issue that have failed to address after 6 dealership visits, escalating (twice - due to first advisor never getting back to me) to GM customer care, emailing an executive, regional service manager, and countless hours to fix the safety issue of my brakes (and the larger root cause issue). GM Customer Care Case #[XXX] - BRAKE SAFETY ISSUE 2024 GMC Sierra AT4 (VIN: [XXX]) - 46,000 miles Nov 2023: 1st visit - Brake squeal at 25K. Pads replaced, GM denied warranty. Early 2024: SAFETY ISSUE RETURNED at 30K miles. May 2025: 2nd visit - Worsening brake noise. Dealer couldn't replicate despite video evidence. Recommended $500 repair. Manager acknowledged "irregular/abnormal" wear. June 2025: 3rd & 4th visits - Tech found unexplained "weird line" on pad. Manager Kyle confirmed unusual wear but no root cause identified. June 10: Opened GM case #[XXX] after dealership failures. July 7: GM failed to coordinate promised appointment. July 14: 5th visit - Les Stanford Buick GMC, Ferndale. Tech rode with me, CONFIRMED BRAKE SAFETY ISSUE but offered no solution. CRITICAL SAFETY CONCERN: Recurring brake defect with abnormal wear patterns acknowledged by multiple technicians. Same brake failure pattern occurring 3 times in 18 months poses serious safety risk. Despite 5 dealership visits, video evidence, and confirmed defect, GM refuses warranty coverage while acknowledging the problem exists. Issue remains unresolved - I've exhausted all customer remedies. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 GMC Sierra 1500. The contact stated that while her husband was driving 55 MPH, the driver’s hand touched the tailgate button, and the tailgate opened. The contact was concerned about the items in the rear falling onto the highway. The driver pulled over and secured the items in the vehicle. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 2,000. The VIN was not available.

Unloaded my Denali at huge loss with 30,000 miles because gm wouldn’t fix recall after many times in shop, broke down on freeway, and need to travel to Canada on business. Canada won’t allow vehicles with open safety recalls to enter country even though im pretty sure engine was MADE in Canada. Gm corporate office told me there’s nothing they can do. While in shop for 4 days of testing i watched vehicle on app, never started, moved, just put out back for 4 days then told absolutely nothing. Just wanted fair trade in for diesel. Truck looked identical to brand new on lot, 10/10 except engine recall. Gm promised to reimburse rental fees when broke down a week or so, submitted documents to Gm, nothing recieved. Bought ram instead for obvious reasons. Is there a lemon law, class action, agency etc that can help compensate for losses? The public should be warned!

Formal Complaint to NHTSA: 2019 GMC Canyon Transmission Issue To Whom It May Concern at the National Highway Traffic Safety Administration (NHTSA): I am writing to formally report a recurring and dangerous transmission issue in my 2019 GMC Canyon, and to request that NHTSA open an investigation into why General Motors has not issued a safety recall — despite widespread complaints and technical service bulletins. My vehicle exhibits jerking, hesitation, slipping, and hard shifting — especially during acceleration or when moving from a complete stop. These symptoms are consistent with hundreds of other consumer reports across forums, NHTSA complaints, and class-action lawsuits tied to GM’s 8L45 8-speed automatic transmission. I was quoted approximately $5,700 for a transmission repair and $8,800 for replacement. This problem is not simply an inconvenience or comfort issue. Hesitation and sudden surges in acceleration pose a legitimate safety hazard, especially when merging onto highways, pulling into traffic, or driving on slippery roads. At times, I’ve experienced delayed throttle response and unexpected lurching — which could easily result in a rear-end collision or intersection mishap. Despite the well-documented nature of this defect, GM has not recalled these transmissions — and owners are left to bear the financial burden of expensive repairs on a known design flaw. That is unacceptable. NHTSA’s mandate is to protect consumers from safety-related defects. In my view, and in the experience of many other drivers, this transmission issue meets the criteria for a recall: - It affects safe operation and control of the vehicle - It has been confirmed by internal GM service documentation - It recurs even after manufacturer-prescribed remedies - It places drivers, passengers, and others at risk Please consider this a formal request to investigate this matter and hold General Motors accountable for a recall or reimbursement program for affected consumers. Joanne Holstein

The contact owns a 2023 GMC Yukon XL. The contact stated that while driving at an undisclosed speed, the vehicle stalled. There was no warning light illuminated. The vehicle was able to restart. The contact performed a VIN search and became aware that the VIN was included in NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling ); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 63,077. VIN tool confirms parts not available.

Battery saver ignited comes on and and the entire dash flickers and turns off ! This happened in a middle of an intersection and I could move my car. We jumped it and went to the nearest auto zone replaced the battery . It was pulling 89 amps . The next day it popped up again and we replaced the alternator. Upon replacing this there was oil everywhere! And we don’t know where it is coming from . Now shift into part light comes on !