GMC Sierra Complaints

15,732 consumer complaints on file.

#11484784September 16, 2022
SERVICE BRAKES
At low speeds , like parking it lost all brakes. I have noticed a few times since the first. I see they had a recall for the brake vacumm pump but I cant find much on it
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11484882September 16, 2022
UNKNOWN OR OTHER
In short, the moonroof of my vehicle spontaneously exploded into a million pieces one morning while driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11484358September 14, 2022
STRUCTURE:BODY
Frame rusted out despite regular maintenance and cleaning. Rotted from the inside out, then spread to the wheel wells and bed. Crossmembers forming holes. Has gotten perpetually worse and is a well documented phenomenon by others online over the past 5 years.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11484365September 14, 2022
SERVICE BRAKES, ELECTRICAL SYSTEM, ENGINE
While driving 35 miles per hour in the early morning hours I came to a 4-way intersection and applied the brakes slowly. Suddenly, I lost all power in the brakes and the steering wheel locked up. The lights, and stereo remained on, and my dash board display immediately showed a red check engine light. I immediately turn on my hazard lights, turned the ignition key off and tried to restart the truck. There was no clicking sounds. The truck would not start but the lights dimmed and the dash display now showed an intermittent yellow, flickering check engine light. After roughly 30 minutes while waiting for AAA to arrive I tried the ignition key and the truck started up with a red check engine light. Rather than attempting to drive I had AAA tow my vehicle to the Chevrolet dealership where I purchased the truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11484147September 12, 2022
POWER TRAIN
Consistent issues with my truck. It is a 2020 GMC Sierra 1500 vin: [XXX]. In April 2022, my truck started to exhibit concerning issues. I was worried about driving home from work and called the dealership I bought the truck at. They recommended that I take it to the the service center in Frankfort, KY where I work. I drove the truck directly to Neil Huffman GMC. They declared the truck unsafe for me to drive. They set up rental car for me to use and I left the truck at the service center. They initially said it was the torque converter. Over the course of two months they kept finding more issues. Repairs were completed at Neil Huffman GMC service center located in Frankfort, KY. My truck still has the following issues.. 1. Ringing sound 2. Grinding or clunking noises 3. Loud noise when I press the gas pedal 4. Delayed shifting and hard shifting problem I drive a hour back and forth to work everyday and don’t want the truck to have issues on the interstate. Driving with a bad torque converter is unsafe since it causes sudden stoppages and significant speed fluctuations. Worn or slipping transmissions have many warning signs. A damaged transmission creates a dangerous situation for me and for other drivers. I had an appointment at Adams GMC in Richmond, KY on September 1st. They said they couldn’t hear anything and no services were conducted. Neil Huffman GMC service department said they replaced basically the entire transmission. I don’t understand why there would be issues still. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11484028September 12, 2022
SERVICE BRAKES
Brake pad monitoring system alert came on driver information center warning screen. Brought to local dealer who told me I needed new brake pads. There is a current safety bulletin on the NHTSA.GOV website for the 2019 model year GMC Sierra, as well as the 2019 Cadillac CT6, but not he 2020 model year. The week prior my driver information center reported front brakes in the high 80's and the rears in the low 90's in terms of percentage of brake life remaining. How can the system go from being safe to being unsafe in a week (and less than 200 miles)? At this point I don't know if my vehicle has a safety problem with my brakes or if there is a sensor and programming issue as described in recall N192264451. I have no observable issues while braking - no pulsing, noise, chattering - that would indicate any brake problems. My only inclination is the alert on the driver information center. Both local dealer and GM customer service are telling me to perform service and pay out of my pocket. This seems inconsistent based on the above recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11484086September 12, 2022
EXTERIOR LIGHTING
Driver side low beam head lamp is dim, no high beam. No accident nor damage to assembly
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11484121September 12, 2022
STEERING, SUSPENSION
My truck has a severe vibration or shake extremely bad at 60mph and up.i have tried new tires, front end alignment, and several different shops have told me they don't know what it is drive shaft or axels
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483929September 11, 2022
ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
4 weeks ago, constant repeated loud chime and visual warning stating " service trailer brake system". This is constantly alarming and unable to be cancelled or acknowledged throughout the drive. This results in distracted driving. Furthermore, it occurs both when towing a trailer or not towing. I have noticed decreased braking of the trailer as well. Have not gone to dealer yet.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483439September 8, 2022
SERVICE BRAKES
Trailer brake system service light
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483472September 8, 2022
POWER TRAIN
The contact owns a 2017 GMC Sierra 1500. The contact stated while driving 65 MPH and approaching a stop, the contact attempted to accelerate however, the vehicle failed to accelerate properly. There was no warning light illuminated. The vehicle was towed to an independent mechanic who diagnosed the vehicle and informed the contact that the transmission needed to be replaced. The vehicle was also taken to the dealer who confirmed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483557September 8, 2022
STEERING
At low speeds my power steering will cut out. Today I almost hit a guy at a gas station when my steering went dead and got stiff for a second then came back. After some research I see over a million trucks were recalled for this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483558September 8, 2022
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, LANE DEPARTURE: ASSIST, FORWARD COLLISION AVOIDANCE: WARNINGS
The forward collision assist and lane keep assist are suddenly not working. This seems to be a software or eletrical issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483250September 7, 2022
UNKNOWN OR OTHER
Air conditioning condenser failed at about 48,000 miles. Seems to be a common problem that is a design defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483276September 7, 2022
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Front passenger window when you push it up it goes up and then immediately back down.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483283September 7, 2022
SERVICE BRAKES, UNKNOWN OR OTHER
Received an error on the dash saying "Service Brake Assist". At the same time the brake pedal became very stiff and braking power was decreased significantly. I have received this same message and brake pedal stiffness with reduced braking power three times in the last 4 days.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483169September 6, 2022
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
While driving down the highway at 70 MPH, the transmission slammed into gear and the engine died. A message appeared and said shift to neutral and press the ignition button. The check engine light also appeared. This had been a problem that first appeared at 48,000 miles. I was told that GM recognizes that there is an issue with the transmission, but that it would not damage the vehicle so it is not able to be repaired under warranty. The dealership advised that I should change the transmission fluid, so I did. The transmission continued to slam into gear thereafter. Fast forward to 55,000 miles where the truck completely died. The engine would not start and the truck had to be towed to a dealership. The next day the dealership told me that they had figured out the issue and that it was related to the fuse box and the ignition. I picked up my truck the next day, and drove less than a mile before the engine died again. I sat at the dealership for 12 hours and they had another answer for what was happening. They said that the shift lever was damaged and it was not allowing the battery to recharge. I live 400 miles away from where the truck broke down. I had to rent a vehicle to return home with my family from a trip. I now have to drive back to my truck in another state, and pay for the 12 plus hours of diagnostic work at $140 an hour as well as the cost of the part and the time to install it because the dealership stated that this is not covered by any warranty. I see that several people are dealing with a similar issue and I am frustrated that no one is willing to help us right this wrong. My grandfather worked for GM his entire adult life, and I will never own another one.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11482843September 4, 2022
TIRES:TREAD/BELT, TIRES
These tires are Good Year Wrangler Trail Runner AT size LT275/65 R20. My total mileage on these tires was 42,751. These were the original tires that were installed when the truck was purchased new. My Tires are rotated every 7,500 miles. Tire pressure is maintained at the exact pressure and in this case was just checked 4 days prior to the incident. I was driving on an interstate at 70 mph. A vibration started. I checked the Tire pressure monitors and all showed normal pressures. About 4 minutes later the vibration increased and I decided to pull over. I had slowed to about 45 mph and had my turn signal On, as I was intending to pull on to the right shoulder. Suddenly the left rear tire exploded, and tread had separated. My truck was damaged . All the components in the wheel well are gone or damaged. The left rear 1/4 panel/fender is bent. NO repair estimate yet. After the incident I saw zero pressure on that tire indicating on the TPMS.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11482853September 4, 2022
ENGINE
I had the a/c condensor and low pressure line replaced due to the cracked welds on condensor
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11482859September 4, 2022
UNKNOWN OR OTHER
Rear window (the one that faces straight back towards bed of truck) is leaking… Haven’t taken it in to dealership for repair because I’ve exceeded mileage so truck is no longer under warranty… Not sure how long it’s been leaking but I’ve recently noticed that water stains (runs) on the inside of this window after rains, washes, etc…
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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