GMC Sierra Complaints

15,732 consumer complaints on file.

#11597612June 29, 2024
ELECTRICAL SYSTEM
Vehicle was last driven on June 23 2024 and parked in my driveway. On the evening of June 29 2024 my horn was blowing in my truck at around 10:30. While I was walking out to the vehicle it was in flames. The fire started from what I understand on the driver’s side behind the dash. Luckily no one was in the vehicle when it happened.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11597685June 29, 2024
POWER TRAIN
8 speed transmission shudder reported by GMC for my model. My truck has 35,500 miles and has the shudder posted in a technical service bulletin by GM. The supposed fix is x 20 quart fluid flush, new filter, and flash the computer. GM will not cover under any warranty as they say this is a “fluid change” even though the manual says this fluid should not be changed until 72,000 miles. The dealerships act like they are just hearing about this which is a total lie. They were told over a year ago if they had any new on lot to change the transmission fluid to mobile one synthetic before selling them. This should be a recall as GM knew this was an issue during manufacture. This is a $1200 repair that should be covered by GM.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11597443June 28, 2024
POWER TRAIN
The contact owns a 2018 GMC Sierra 1500. The contact stated that while stationary at a stop light and attempting to depress the accelerator pedal, the vehicle hesitated while responding. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic where the vehicle was diagnosed with transmission failure. The contact stated that several unknown parts were replaced. The manufacturer was not made aware of the failure. The failure mileage was unknown. The VIN was not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11597240June 27, 2024
ENGINE
Just got off the highway was at stop sign on exit ramp and it just died. No warnings no lights no indication that something was about to happen. No neutral so couldn’t even push it out of the way of traffic. Had it towed to shop for diagnostic. Possible lifter problem. $600. Dealership towed it to their shop. Engine tear down, lifters replaced. Gmc to pay 30%, dealership paying $1000, me $1300. Dealership started truck and the crank bearing spun. Now needs new engine, which are on back order. Cost ??? How long before engine available??? This is a known problem by the dealerships, GM & repair shops. Had we still been on the highway when this occurred doing 75mph we could have been killed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11596820June 26, 2024
UNKNOWN OR OTHER
The transmission/torque converter is causing (bucking, kicking, jerking, slipping, difficulty when taking off, shuddering during driving, fishbite, and chuggle). Its becoming a safety hazard now because its putting me and others at risk for an accident. The vehicle will hesitate to go in which if traffic may be rear ended by another vehicle. During weather/rain the vehicle will lose traction and the rear wheels will spin causing an accident. Problem has been reported to dealership multiple times and the only solution they can provide is keep driving the vehicle. Vehicle has no warning lights at all or any other symptoms of problems prior to when the components started to fail. The issue first happened around February 2024 and remains to be an issue to this present day. I've been the dealership more than 6 times with no solution/fix. I'm concerned for my safety now and need this issue addressed ASAP.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11596874June 26, 2024
STEERING
The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving and attempting to make a right turn, the vehicle lost motive power and the steering wheel became very firm and the vehicle became difficult to maneuver. The contact almost rear-ended the vehicle in front. There were no warning lights illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or local dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 110,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11596566June 25, 2024
UNKNOWN OR OTHER
The frame of the vehicle is rusted through in 2 areas. I recently noticed the rusting frame. Shortly after I purchase the vehicle the rust preventative coating, that was factory applied, was noticed pealing from the frame rails. I sprayed undercoating on the frame at that time to avoid rust after seeing that the factory application had failed. This has not been adequate as the frame has rusted in an area that the inside channel of the frame did not drain effectively and therefore collected water and salt during the winter months. The frame cross members are also rusting badly. The metal is flaking off excessively. In contrast the trailer hitch on the truck is in very good condition because it is the only part of the frame that appears to be properly conditioned to resist corrosion.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11596622June 25, 2024
POWER TRAIN
The valve body inside the transmission has failed and GM has known it to fail but they have done nothing about it. My vehicle has been in the shop for 2 months because of it and “parts are on back order” it’s terrible i’ve bought this vehicle in august and it’s constantly been inside the shop for various issues. My transmission lost 7th gear and it came to an immediate stop in the road because of it. tires screeching and all. truly embarrassing that you can spend 83,000$ on a truck and it be such a peice of junk.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11596471June 25, 2024
POWER TRAIN
We purchased our 2018 GMC Sierra 1500 z71 brand new at Fairway Buick GMC in Las Vegas, NV. Pretty much off the lot we noticed some hard shifting, but over the last year/around 60,000 miles it has become progressively worse. Come to find out GM is aware of a known defect in the transmission used in this make/model and several others by GM which causes hard shifting and jerking while upshifting and down shifting primarily between 1st and 2nd gear. This malfunction has caused the vehicle to activate "limp mode" which doesn't allow the vehicle to move out of 1st gear, while driving on the road, putting the safety of the occupants and others on the road at risk. This first happened in January 2024 while we were moving and towing a 6' U-Haul trailer. Luckily we were within a few miles of our destination and made it there safely. Upon taking it to Autonation Buick GMC, we were told they had seen this issue before and the only solution would be to replace the transmission and would cost roughly $6,000-$8,000, and that's with the generous 20% discount they were willing to offer. We opted to have the transmission flushed instead and it seemed to fix the problem temporarily. Then on [XXX] while decelerating and coming to a stop light it hard shifted from 2nd to 1st then the check engine light came on and limp mode was activated. It was 110 degrees on this day in Las Vegas when my husband was driving home from work, and again by the grace of God, he was only 5 minutes from home and made it there safely. However, what if this had occurred with our two young children in the vehicle and we were no where near home? We would have been stranded in dangerous conditions potentially putting our safety as risk. This KNOWN defect in GM transmissions is 100% a safety risk and this needs to be investigated and recalled immediately. There is an ongoing class action lawsuit against GM regarding this issue and I will be looking to get involved as well. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11596110June 24, 2024
POWER TRAIN, ENGINE
The contact owns a 2016 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. Additionally, the transmission started shifting improperly. The vehicle was taken to an independent mechanic where it was diagnosed with a failed transmission fluid control sensor. The contact was informed that due to the transmission fluid sensor failure, the torque converter control module needed to be replaced. The contact stated that the vehicle was taken to several different independent mechanics and the diagnosis was confirmed. The vehicle was not repaired. The contact provided the DTC codes: P0711 and P0700. The contact researched and discovered a previous repair coverage with a similar failure description. The coverage program code was N192291660. The manufacturer was made aware of the failure; however, the contact was informed that there were no unrepaired recalls or coverage for the failure. The failure mileage was approximately 86,624.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595976June 23, 2024
POWER TRAIN, SERVICE BRAKES
Transmission and transfer case leaking. Masters cylinder ( brake booster) leaking
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595742June 21, 2024
STRUCTURE
The contact owns a 2020 GMC Sierra 2500. The contact stated that when the vehicle was parked, the contact's husband noticed that rainwater had entered the rear interior of the vehicle. The contact stated that the rainwater had entered through the rear sliding window. In addition, the contact stated that the aluminum casing around the rear window had fractured. The contact stated that due to the failure, the interior of the vehicle had a moldy odor. The vehicle was taken to the dealer where it was diagnosed with a fractured window frame. The contact was informed that the rear window and frame needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The contact was informed that the repair would not be covered under warranty. The failure mileage was approximately 69,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595810June 21, 2024
AIR BAGS
The contact owns a 2015 GMC Sierra 3500. The contact received notification of NHTSA Campaign Number: 21V504000 (Air Bags); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595813June 21, 2024
POWER TRAIN
The transmission went at 67,000 miles and posed a safety issue when my husband was driving & suddenly couldn't drive above 1st gear. Vehicle is at the GM dealer and has been for weeks, but there have been so many issues with the transmissions of this year, make & model, that the transmissions are on back order and we are told it can be MONTHS before they get one in. The dealer already has another one that has been waiting for once since April. We know of others with this same issue on this make/model/yr, as well as engine issues, but yet there are NO recalls for this issue. The only warning that came on was when the issue occurred- no prior warning or indications. GM is involved but make no comment on why there isn't a recall for an obvious known issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595515June 20, 2024
LATCHES/LOCKS/LINKAGES, STRUCTURE:BODY:DOOR
The contact owns a 2021 GMC Sierra 1500. The contact stated that the inner tailgate door failed to open while pressing the release button. On several occasions while pressing the release button, the inner door would lower down. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The failure mileage was 45,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595566June 20, 2024
FUEL/PROPULSION SYSTEM
Fuel Pump Driver Module
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595591June 20, 2024
SERVICE BRAKES, STEERING
When braking, the service trailer brake system message and service stabilitrac message appear on the dash and brake pedal gets soft to hard repeatedly and truck pulls from side to side violently as if one side of the trucks brakes are working and the other side is not.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11595266June 19, 2024
ELECTRICAL SYSTEM, UNKNOWN OR OTHER, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
We’ve had issues with the electrical system/brake lights when we hook any trailer (horse/boat/utility) to the truck. One issue is that the system shows unconnected and the trailer lights blink or do not work. We’ve brought this in to the dealer 3 times and they have yet to resolve the issue. The other issue of melted plastic on our rear sliding mirror. It just appeared one day, possible after using the rear defog button. We took it to the dealer and they also do not know what is the issue. We found several other blogs where owners have had the same issue. This is a newer vehicle, and we live in Southern California where the temperature is mild. It just appeared one day. We are concerned This is a safety issue with the electrical system melting the plastic and possibly causing a fire. Here is a link to a blog: [XXX] Lastly, this vehicle was advertised as having adaptive cruise and it does not have the capability (chip) to do so. 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
#11595073June 18, 2024
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA, STRUCTURE:BODY:TAILGATE
Issues- Front and Rear external safety camera system fails to display. Tailgate falls open on its own while in motion. This was a new purchased vehicle off the lot. Yes-Vehicle is available upon request for examination. Yes-Safety risk are imminent due to blind spots caused by inoperative cameras i.e. hitting unseen pedestrians crossing behind or in front and behind the vehicle. The tail gate dislodging without notice or visual to the driver can cause a loss of passengers possessions or equipment also causing a road hazard for trailing vehicles on any roads highways while vehicle is in motion. Yes- This problem has been noted by dealerships across America. There is no recall for my vehicle at this time. No- Vehicles have not been inspected without a recall action or requirement. Dealer says they will not perform a diagnosis without the requirement to do so. This was a a newly purchased vehicle. No-There were never any warning lamps or indication automatically of the camera system’s failure
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11594832June 17, 2024
LATCHES/LOCKS/LINKAGES
The contact owns a 2024 GMC Sierra 3500. The contact received notification of NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to GMC Sierra