GMC Sierra Complaints

15,732 consumer complaints on file.

#11535291July 30, 2023
FUEL/PROPULSION SYSTEM
My vehicle suddenly did not want to start without any warning. I drove my truck and everything was good until I turned it on with the remote and not even a minute after it shut off. I tried turning it back on and it only cranked but would not start. I had a mechanic diagnose it and their computer gave them fuel pump error code. They said it was the fuel pump control module and that they have been getting several GM trucks of the same year having that issue. My truck has less than 36,000 miles on it to have this issue and I have seen that GM has issues with their fuel pump components so I dont understand why they have not recalled them. This is a safety concern because these trucks auto shut off when stopped at red lights and it could randomly shut off and not turn back on leaving someone stranded in the middle of the road without any warning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11535309July 30, 2023
UNKNOWN OR OTHER
Sunroof glass shattered. This is the first summer for the truck. Travelling at ~75MPH the sunroof glass shattered. Neither driver nor passenger saw any objects in the air. I was not travelling under an overpass. Over the last 2 months I have been awaiting repair I have tried various methods to cover the sunroof and all have failed. Some easily pop off. Others hold better, but when travelling at higher speeds (>50MPH), the covering will bulge outward presumably from the pressure difference from outside to inside the cabin. My guess at root cause is a combination of pressure on the glass created by airflow over the truck at highway speeds, ~85degF air temperature, full sun load, and possibly stress of the roof (which is black).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11534924July 27, 2023
ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL, STEERING
When I turn the steering wheel, the ac turns off, lights turn off, the computer screen turns off, steering wheel gets hard and does a jerking movement. The truck turns off too and then suddenly turns on. This can cause a death. If this happens in a highway or a street where speed is high this can easily cause a death.. fortunately this has happened going at 30 mph and no one close at the time and also at a drive through fast food restaurant. It has not been confirmed by the dealer but I will soon have to take it. The only light that comes up is the StabiliTrak.. but it only lights up when it happens and then it goes away.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11534932July 27, 2023
AIR BAGS, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION AVOIDANCE: WARNINGS
What happened: the air bags failed to deploy during a crash. Question: What component or system failed or malfunctioned? Answer: air bags, automatic emergency braking, forward collision warning. Question: Is it available for inspection upon request? Answer: yes Question: How was your safety or the safety of others put at risk? Answer: driver-side air bags failed to deploy upon a rear-end collision with the vehicle to my immediate front @ 40 mph. Question: Has the problem been reproduced or confirmed by a dealer or independent service center? Answer: No. It currently is at a repair facility as of this morning and it’s apparent that the air bags did not deploy. Question: Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Answer: No, and not to my knowledge since turning the vehicle into the repair facility this morning. Question: Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Answer: None. No previous warning lamps, messages, or symptoms. *NOTE: I have dash cam video of the collision in my possession.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11534128July 24, 2023
ENGINE
The contact owns a 2016 GMC Sierra 1500. The contact stated while driving 65-70 MPH, there was a clicking sound coming from the vehicle. The contact stopped and examined the vehicle and became aware that the clicking sound was coming from the engine. The vehicle was taken to the dealer who stated that the lifters needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 102,000. The VIN was not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11534147July 24, 2023
STRUCTURE:BODY
While driving on the highway, the passenger shock mount that is welded to the rear forward mounted crossmember snapped off due to rust. I have taken many pictures of the damage. I am a Master Certified ASE and Ford technician with my PA Emissions and Safety inspection licenses. I inspected the damage to my truck at my shop and removed the bed. I found further rust and damage at the drivers frame and rear shock mount at the rearward mounted crossmember. The whole rear frame section is rotting away. This caused the vehicle to sway heavily and change the driving attributes of the vehicle. I have not contacted police or the insurance company. There were no warning lamps of any kind.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533879July 23, 2023
STRUCTURE:BODY, SERVICE BRAKES, AIR BAGS
Body paint delaminating. Also, difficulty sometimes stopping vehicle extra length required to stop
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533936July 23, 2023
FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
My truck started having a strong fuel smell by drivers door. 7/11/23 I took to the GM dealer to address strong fuel smell. The dealer at Patriot GMC said they would have to drop the tank and do smoke test to locate leak. They reported no leaks found that it looked like possible fuel on top of tank from over filling and spill. I explained I didn't overfill tank or spill any gas. Picked up truck after being told no fault found. I had to pay $539.91 to drop gas tank for testing and to check fuel pump.7/17/23 [7/11-7-17] I explained no trouble with starting or stalling with fuel pump and I just had gas smell really strong. Engine light came on when I left shop so I called dealer and explained my truck was running fine and now engine light on. I brought it back to shop after a week of testing and put back in shop on 7/17/23 They took the code and it came back as EVAP system issue. Code P0449 They said my EVAP Vent Solenoid valve circuit was open. Circuit tested terminal 1 pin loose. Terminal in connector replaced. Vent valve tested. The mechanic stated now running as designed. Multi point inspection completed. Picked up vehicle and stopped at store because I could smell gas real strong inside my cab and under hood. I contacted dealer for third time about gas smell and this time I asked for shop manager to come to vehicle so I could make sure he could smell how strong the gas smell was and now it was coming from front hood area into ac vents and into cab and it was making me nauseous and scared of fire issue. He said he would get it fixed. Received call yesterday stating that they found a small crack in fuel pump and my truck was ready for pick up. This is the same recall notice I have read about on major recall of GMC vehicles due to crack in fuel pump. My truck is a 2016-2017 but I don't see it on the recall list or have I been notified of the issue. #N192283991 Safety issue Pressure regulator cracks fuel pump. 19V837000
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533833July 22, 2023
ENGINE, POWER TRAIN
While driving my 2022 Sierra elevation in April of 2023 my check engine light and a reduced power light came on and onstar diagnostics gave me a code of P30B2. Made a service appointment and was told there was an issue with the wiring. Problem was fix so i was told by the dealership, but the check engine light has come on 3 more times for the same reason.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533873July 22, 2023
UNKNOWN OR OTHER
My air conditioner doesn't work and vehicle is a 2015 GMC truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533680July 21, 2023
SERVICE BRAKES, ELECTRICAL SYSTEM
DEFECTIVE TRAILER BRAKE SWITCH ,WHICH POSES A RISK TO MOTOR VEHICLE SAFETY IF YOU ARE TOWING A TRAVEL TRAILER, WHERE BRAKES FAIL LOCK UP IS POSSIBLE DANGEROUS TO PULL
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533406July 20, 2023
SERVICE BRAKES
Brakes will sometime seize up and not allow car to stop in sufficient time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533452July 20, 2023
ENGINE
Vehicle is a Duramax Diesel engine with a CP4 fuel pump. The pump went out and the entire line/system has to be replaced. While driving the vehicle it lurched, made a noise then went to reduced power mode and shut off. Luckily we had just pulled off from a stop sign, if that happened and the speed of 55 it could of been far worse. Then engine would not restart and had to have vehicle towed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533481July 20, 2023
FUEL/PROPULSION SYSTEM
Fuel system failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11533073July 18, 2023
POWER TRAIN
The transmission causes the vehicle to shudder, lurch from a stop, at times it won't move forward (from a stoplight etc), it won't reverse other times. When driving down a freeway, the transmission allows the engine RPM to surge wildly as if I had put it in neutral and pressed the accelerator. This started at 85k miles approximately. It's into 90k now. The transmission had to be replaced at a cost of $6000
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532750July 17, 2023
STEERING
The contact owns a 2014 GMC Sierra 1500. The contact stated while driving 30 MPH and attempting a left turn, the steering wheel became stiff and jerked to the right. The contact was able to pull to the side of the road and restart the vehicle however, the power steering failed to return to normal functionality. The power steering assist warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. Upon investigation, the contact related the failure to NHTSA Campaign Number: 17V414000 (Steering) however, the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 44,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532754July 17, 2023
FUEL/PROPULSION SYSTEM, ENGINE
I own a 2016 GMC 3500 Diesel that had a serious mechanical breakdown while traveling on the freeway. The truck lost all motive power and needed to coast across 4 freeway lanes. Once towed to a local GMC Dealer, they diagnosed the problem as the Bosch CP4 fuel pump internally came apart while driving. I have to have this vehicle working so I got it repaired at a cost of $16,145. This is a known issue and losing all power while at highway speeds could have caused a serious incident. Please address this issue before someone dies.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532538July 16, 2023
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
Were driving and vehicle repeatedly suddenly braked in the middle of interstate or highway without any warning. We are so traumatized, and scared of this vehicle. It has happened before. Dealership says there is nothing they can do. This could have caused our life. GMC should be held accountable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532444July 15, 2023
ELECTRICAL SYSTEM
The integrated trailer brake controller does not work on this truck. Specifically, the part is the trailer brake computer module. Trailer brakes went out immediately and continue to disconnect at all times. The problem has been reproduced and confirmed independently. GMC has looked at the problem at dealer and stated they do not currently have a solution. Problem appeared immediately and has continued every single time a trailer is connected to the truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532294July 14, 2023
ELECTRICAL SYSTEM, SERVICE BRAKES, UNKNOWN OR OTHER
TRAILER BRAKE SYSTEM NEEDS SERVICE, WARNING LIGHT CAME ON AND BEEPING LOUD STARTER LAST MONTH 6-2023 , AND MAYBE THE BRAKE CONTROL MODULE IS BAD ? CODE C1117 CAME UP
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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