GMC Complaints

After my child had thrown up all over the car seat her father had taken her inside to clean up and I took the car seat apart to throw the pieces into the washer to clean them. The harness strap did not come out fully clean so I contacted Graco for a replacement piece and I was told that they don’t replace those and that the strap being removed totaled my car seat. It has a woven material tab that goes up through the hard plastic base and locks in by opening itself. It’s essentially a T in the material so it can be folded to go back through the hard plastic base. I was told that since the manual doesn’t provide instructions regarding that piece that I should know it’s not to be removed. No where in the manual, on the car seat or on the strap says it’s not to be removed. I did not damage/break/cut any pieces to get it in or out of the car seat. I was a mom in a panic trying to clean the car seat as quickly as possible so I could tend to my sick child. There were no warning signs telling me anywhere not to remove it. I don’t want other parents to do what I did and have a totaled car seat that they continue to use. I did not have the manual at the time of removing the pieces for cleaning but I have since located the PDF and read through all 96 pages.

I was driving north on [XXX] when I felt a slight pull to the right. I figured it was my lane assist even though I was in my lane. Seconds later it felt like if someone was in my passenger seat and just yanked my steering wheel to the right hitting the guardrail. My whole tire and the assembly was off but everything was still intact to the tire. The tie rods, axle, ball joints, the whole assembly. During investigation I was told by the mechanic that the stabilizer bar was a clean break. There was damage to the front end and all down the side. I was told by GM that the force of the impact was what ripped off my tire but it was not enough impact or damage to deploy the airbags. I was on crutches for my left leg, bruising and scar now from a huge abrasion to my right arm. Still having right shoulder pain. I sent all this to the attorney General and they tried to mediate but Afton from GM told Mike that he contacted me 3 times and I did not return her calls. I called her a left her multiple messages and she has not returned my calls. I only had the car for a few months with 5,000 miles on it. I put $2,500 down then had to turn around and get a used vehicle, put another $2,000 down and making the same payment due to the hit on my credit for a 2023 plain vehicle. Plus my insurance went up, missed work, medical bills, etc. 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 driving approximately 65–70 MPH, the bumper air deflector, metal tabs, and screws detached and struck the front windshield. The vehicle was taken to the dealer, and the contact was informed that the repair was not covered under recall. The vehicle was not repaired. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the failure. The manufacturer was made aware of the failure, and a case was filed. Additionally, the contact was informed that the repair was not covered under warranty or recall. The failure mileage was approximately 40,000.

Engine failed at 12, 430 miles. Dealer said it required a new engine. This happened on 06/06/2026 and I am still without my very expensive vehicle. There were no wanring lamps or other engine failure notificatioins before this occurred.

The contact owns a 2024 GMC Sierra 1500. While shifted in reverse, the back over prevention camera intermittently displayed a black screen accompanied by two failing camera symbols. During the most recent failure, the camera displayed a blank image, causing the vehicle to crash into the garage door, causing damage to the garage door. The failure was intermittent. No injuries were reported. A police report was not filed. Medical attention was not needed. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

The contact owns a 2023 GMC Yukon. The contact stated that while driving at an undisclosed speed, the low engine oil warning light illuminated. The vehicle was taken to the dealer and repaired under NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The contact stated that the recall repair was completed several months ago; however, the failure reoccurred. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 34,000.

My truck went into Reduced Power Mode while driving on the highway (Very Dangerous and life threatening) for a Coolant Control Valve Failure code (P1098), which has been confirmed by a GM dealership. GM already has extended the warranty for Special Coverage N252508341 for selective Vin numbers only and my Vin number is being excluded which isnt safe at all or fair. My truck is a 2021 Sierra Denali 3.0L lm2 duramax and has the same exact problem (coolant control valve failure code), and the same exact faulty part, and the same exact motor (LM2) which directly matches the perimeters for the N252508341 Special Coverage Program but my truck isnt being recalled or covered for repair due to them selectively choosing certain Vin numbers to recall only.

The driver's seat inboard airbag assembly and internal structural wiring harness failed due to a direct short circuit, completely deactivating the vehicle's supplemental restraint system. General Motors has a known engineering bulletin for this issue (#23-NA-085), noting that sharp internal seat frame components slice the airbag wiring harness. Rather than permanently fixing this structural design flaw while under warranty, dealership technicians repeatedly executed temporary, non-compliant field patches, including plastic zip-ties and Velcro tape inside the cushion. These temporary patches continuously failed, leaving the airbags disabled. Furthermore, the vehicle was sold under "Certified Pre-Owned" designation with an active, uncompleted 2020 manufacturer Customer Satisfaction Program Campaign (#N202310850-02) for this exact airbag circuit defect. Component failed & available for inspection: The driver's seat inboard airbag assembly and internal structural wiring harness failed due to a direct short circuit. The components are available for inspection inside the vehicle at the servicing dealership. Safety risk: Safety was put at extreme risk because active Diagnostic Trouble Code B14DC completely deactivates the airbags. This means the airbags may fail to deploy in a collision, leaving the driver completely unprotected in an accident. Confirmed by dealer: The problem has been explicitly reproduced and confirmed by an authorized franchise dealership across seven separate service visits spanning from August 2025 to June 2026. Inspected by manufacturer/others: The components have been physically inspected multiple times by authorized franchise dealership technicians acting on behalf of the manufacturer. Warning lamps & symptoms: The vehicle displays "Service Safety Restraint System" warning message on the dashboard. The warning lamp first appeared on August 26, 2025, at 78,472 miles while the vehicle was strictly within its CPO warranty

Loud knocking noise started while motor is running. Took to dealer who confirmed the noise and inspected. Metal confirmed in the oil pan and throughout motor. Service advisor said a new motor will be needed and has sent info to GM. This vehicle was checked per the recall and passed the pico test. Oil was changed to new GM 0-40 by dealer.

engine failure causing vehicle to be unsafe to drive. our vehicle was not included in the L-87 loss of propulsion GMC recall even though it is a 2021 Yukon 6.2L. the engine failure is same as those being recalled. vehicle is currently at Cardinale GMC in Seaside CA waiting repair. the only warning of the impending failure was loud noises coming from engine compartment while driving on the freeway. Cardinale confirmed the problem and our extended warranty is covering repair costs. it seems that GMC should have included our VIN in the recall.