GMC Complaints

The same thing that happenes to the grill mold in recall N242490120 happened to my vehicle with the hood vent ornament. For reference, the Part number is 84802205/85057002. I was driving on the highway to work and it flew off which caused it to scrape my hood and chip my windshield.

On March 3rd 2026, I went to a doctors appointment. Halfway into the 50 minute drive, I noticed the on the infotainment screen that my GPS was still showing me being at home. It was working normally a couple days prior to parking the truck. After my Dr appointment, I did some online research and followed recommended procedure to do a hard reset of the infotainment/radio to try and refresh the signal. Didn't work so I checked the recommended fuse and it was good. Realized that the OnStar and truck's cellular/data was also not working. After more research, I found that it's a very commonly reported issue on 2022-2024 trucks. Apparently the Telematics module will freeze/glitch or fail. Took my truck down to American Chevrolet on April 13th for the Data Gateway Module recall# N242435631 and asked their service advisor if he could find out what's going on. After the recall was performed, he verified that the Telematics module is indeed dead but, because I'm at 39,000 miles, they could not fix it at no cost. The biggest reason why I've been driving this truck so frequently is because it's the safest truck we have and the Automatic Crash Response & Emergency GPS gives my girlfriend some piece of mind when traveling with our two sons. She now refuses to travel with me in the truck. I'm also upset that the cellular data is paid up until I believe March of 2027 and now I can't use services paid for but, I'm more concerned about the safety features that are no longer working. For this part to completely fail or lock up at under 40k miles is absolutely absurd. I'm going to request a Good Faith repair through GMC but, I want this to be documented. Thank you for your review of this problem.

Vehicle keeps displaying a warning message to service drivers assistance system. Taken the vehicle to the dealership multiple time and the condition still persists. Dealership contacts GM tech support and are being told that GM is aware of the problem, programing issue, but they have no solution after several months. Multiple vehicles at many dealerships have the same problem. I don't feel safe driving the vehicle. Drivers assistance system includes multiple cameras and sensors. This condition could cause severe accidents of even death if the system gives false or wrong information

I bought the car at the end of October 2025, so it was always cold till last month. Last month the first day it’s warm I get a warning saying my steering assist has been limited with a code saying the thermostat needs replacing as well as the sensor. This is a known issue with these vehicles and now I have to pay $1500 out of pocket to have fixed because my limited warranty expired 2 weeks before it was warm enough to trip the codes. This is ridiculous especially seeing as I am disabled and can’t afford an extra $1500 after spending $7000 for the down payment!

Ongoing problem with only solution is a recall notice. Power Steering Assist Reduced -Customer reports Power Steering Assist Reduced message displayed on DIC, A/C is inoperative, Engine Coolant Temperature Sensor inoperative. Recall needed to update Engine Control Module (ECM) with latest calibration.

When shifting vehicle into park and turning off the ignition switch a notification shows up and says shift to park even though vehicle is already in that position.

I was exiting a main highway and when I let off the accelerator the engine died unexpectedly with no prior signs of failure and would not turn over to restart, luckily I was able to coast onto a side street out of the way of moderate traffic. I called GM roadside assistance and had the vehicle towed to my local dealership. The service department confirmed that the engine was seized and needed replaced. My vehicle went through the L87 recall and passed inspection last fall at 29,400 miles, had another oil change at around 33,500 miles. The engine failed at 37,800 miles. I am the original owner and have always maintained the vehicle to GM standards. I feel that the recall is not solving this problem, because the engines are failing anyway. At this time my vehicle has been at the dealership service department for three and a half weeks, and is waiting on the replacement engine. The dealership has provided a loaner vehicle.

2021 Yukon Denali. Inspected by dealer under recall. Passed dealership test and new oil viscosity adjustment completed by dealer at 39k miles. Told no issues with vehicle continue to drive it. Today 4-14-26 on the interstate traveling 75mph the engine seized and lost all power. Instrument panel showed 0rpm as I coasted to a stop and the engine lost all power. I placed the vehicle in park on the shoulder and attempted to restart. Nothing! Engine would crank. Towed to Olathe gmc dealer and they took one looke at it , diagnosed it said it had all symptoms of total engine failure. Ordered me an engine and told 6 weeks out. Sent me home in a loaner. Service department told me They get one everyday sometime more than 1. They have hertz rental on standby for warranty loaner vehicle. I find it spilling that these vehicles come time to be sold. They’re all bad according to the service department. I also find it very frustrating that they park the broken defective vehicles at the very back of the dealer lot to hide the graveyard of 6.2’s from the public. My vehicle is under 5 year 60k warranty and engine is being replaced, but the tech could not share the extent of what would be replaced. All he mentioned was the block. Zero warning engine just went up like a grenade at 75mpg on the highway. Wife’s vehicle and left me stranded 2 hours from home on a work trip.

Vehicle Fire. Total Loss. While driving, vehicle began to smoke from under the hood. Fire grew rapidly and vehicle is totaled. No warning signs leading up to the incident.

The contact owns a 2015 GMC Terrain. The contact stated that while driving approximately 40 MPH, there was an abnormal rattling sound coming from the engine compartment. The vehicle was taken to the residence. The contact stated that when the vehicle was started the following day, the rattling sound from the engine compartment returned. The vehicle was taken to a dealer on several occasions, and it was diagnosed and determined that the engine was low on oil and was consuming 2 quarts of engine oil every 2-3 weeks. The contact stated that the oil level was topped off. The manufacturer was notified of the failure. The failure mileage was approximately 94,000.