GMC Complaints

Recall Number N242490120 was performed in April 2025 at: Rivard Buick GMC, Tampa, Florida, Phone # 813-620-6500 The Grille was inspected and repaired with adhesive to reinforce the plastic tabs to the grille so it would not detach and cause a safety issue when driving. This recall was performed before we purchased the vehicle and we are located in Oklahoma City, OK. The vehicle has been listed for sale at our car dealership in Oklahoma City and had to have multiple Warranty Repairs at GMC/Chevy over the summer. We Sold the vehicle on [XXX] to a customer: [XXX] and he was driving the vehicle and the Grille detached and fell off the vehicle while driving. The Grille hit his hood and windshield and caused damage. He could have had an accident when the grille detached from the front of the vehicle. We dropped the vehicle off at Bob Howard GMC on 8/26/25 and they said since the recall has been performed that it is not covered and nothing they can do about fixing it under Recall or Warranty. We reached out to GMC Customer Service 1800 # and they told us the same thing, and we would have to repair it out of pocket. I find this extremely unprofessional and avoiding taking care of the issue that should have been taken care of the first time. The part is faulty and part of the Recall to be repaired or replaced properly so this hazardous part does not cause a problem while driving and that is exactly what happened even after having the recall taken care of at GMC. We at La Raza Motors Inc. have inspected the vehicle/Grille and upon discovering the previous recall/repair that was performed at Rivard Buick GMC in Tampa, Florida, the Grille was not properly repaired and not up to standard. This part should have been replaced instead of repaired. [XXX] retrieved the broken/detached Grille after it detached to see what had happened and we have pictures. No police report was made at the time of the incident. No lights or warnings were on at the time of the incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT

As I was driving down the Ohio Turnpike on my way to work on Tuesday, August 5, 2025, my check engine light came on. Almost immediately I got a notification that the car was operating at reduced power. I had no previous issues with the vehicle. As I got off the turnpike my braking system failed. I was able to come to a stop partially in the grass before entering into oncoming traffic. The entire car shut down. I was unable to restart the car. We were also unable to put the car into neutral to push it off of the road the remainder of the way because the wheels were completely locked up at this point. The parking brake was engaged on its own. We also could not get the car into neutral. I had the car towed to a local repair shop, not knowing at all what the issue was. The vacuum pump had failed and broke apart in the engine. This caused my braking system to fail completely also. The vacuum pump on my 2020 GMC terrain has been noted as faulty or defective. However, an official recall has not been issued for my vehicle. Had the pump failed a moment sooner I could have been in a crash trying to exit the turnpike. I took my vehicle to a repair shop and spent $1400 out-of-pocket. The car still does not run correctly now as there are pieces in the engine of my vehicle that were unable to be retrieved.

The contact owns a 2021 GMC Sierra 2500. The contact received Manufacturer's Recall Number: N232426400, for water intrusion into the electronic gate-release switch. The vehicle was repaired. The contact stated that six months after the vehicle was repaired, the tailgate failed to operate as intended. While at the residence, the taillights and headlights were flashing. The contact also became aware that the tailgate had unlatched independently while the vehicle was parked. The message "Integrated Tailgate Open or Integrated Tailgate not Latched" was displayed. The contact stated that there was an abnormal clicking sound coming from the actuator when the tailgate opened independently. The vehicle was taken to the dealer, where it was diagnosed that there was water in the switch. The dealer informed the contact that the repairs were already made and, due to the water intrusion into the switch, the dealer refused to redo the repair under the previous recall. The vehicle was repaired. The manufacturer was notified of the failure, and denied assistance since the recall repair was already performed. The failure mileage was approximately 53,000.

My engine is currently experiencing loud knocking/shaking. It worsens as my vehicle is accelerating it is causing my engine to lose ability to accelerate which has posed a safety concern. This vehicle is my main source of transportation for my family. We have taken this vehicle to the dealership where they were unable to service due to the recall not being open and available and i have contacted GM customer service with no remedy to be issued at this time. The dealership cannot perform any maintenance pertained to the recall and yet cannot remedy. I am concerned for my family's safety. I was advised that i shall continue to drive the vehicle until it breaks down or the recall is open for repairs.

On August 15th, 2025, I brought my new 2025 GMC Sierra 1500 Denali to Bill Cramer GM Dealership, 2251 W 23rd St, Panama City, FL 32405, due to a complete loss of audio in the cabin. This affected the turn signals, radio, and critical safety alerts, including collision warnings and seatbelt reminders. Given the vehicle's high cost and its status as a new premium model, this malfunction was both disappointing and alarming, particularly due to its implications for safety. This occurs about every third time I drive the vehicle. The dealership retained my vehicle for over a week to diagnose and address the issue. I received an email stating that the service was complete and the truck was ready for pickup. However, upon arrival, a service technician informed me that they could not identify the cause of the audio failure and, consequently, no repairs were made. I was told the dealership would continue consulting with General Motors' corporate engineers to determine the cause and solution.

Vehicle showed me error code “ brake failure dont drive over 43mph “ And some other error codes I took the vehicle to the dealer because it was serious They made me sign a diagnostic fee document that i will be responsible for the diagnostic But the issue was just battery needed to be replaced according to the dealer we did the repair at the dealer Battery + hours + diagnostic But the misleading error codes made me take the car to dealer what was unnecessary So please look into it Customer are getting charged for unnecessary repairs because of misleading error

I was driving back from out of state and all the sudden the engine just got loud. So I pulled over and check oil levels. Except there is no access to the transmission oil. The only way to check this is to remove the front driverside tire, take a bolt out and see if any oil drips out. This is insane that there is no dip stick. I am taking it to a mechanic on Monday but to not have quick access to this is wild.

Onstar went down suddenly this is component in GM vehicles to track vehicle and remote start and also have subscription monthly to pay Please look into this matter thanks

OnStar module doesn’t work it went out in January 2025 there’s a 1000’s of other users in the in the OnStar module community complaining of the same issues . When you take it to the dealership they will not assist and will not warranty it out

Brake assist warning message and BRAKE light appeared a couple of weeks ago, along with others. Brought the car into the dealer, who initially thought they cleared the errors and reported no additional issues when they ran the diagnostics. Nothing was cleared. Vehicle application and monitor also does not show an issue, even though the warning appears at each start up and none of the related safety systems work (ABS, ESC, AEB, etc.) that rely on the brake pump. Information from the dealer and owners manual are in conflict, with the dealer allowing me to drive while the owner's manual indicates it should not be driven with the BRAKE light lit. They have now "diagnosed" a "failed" master cylinder unit that includes electronics and the pump. The car had about 4500 miles on it when the issue occurred. I am at a loss for if it should be driven and trusted or not.