GMC Sierra Complaints (2017)

481 consumer complaints on file.

#11490866October 25, 2022
FUEL/PROPULSION SYSTEM
The def heater gm part#84162464 has broken on my truck. There are many owners with the same problem on their duramax diesels. This has been an issue since def tanks were mandated by the federal government. The replacement cost is estimated to be $2000. from my local dealership. The truck had 50,000 miles on it when the heater first started working intermittently. I'm reporting this so it can be logged in as another incident for failing, poorly engineered parts.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11490165October 20, 2022
SERVICE BRAKES, HYDRAULIC
The contact owns a 2017 GMC Sierra LD. The contact stated that on two separate occasions while driving at approximately 50 MPH, the front passenger side wheel locked inadvertently. As a result, another vehicle crashed into the attached trailer which caused the trailer to jackknife. The driver alert warning light illuminated. The air bags failed to deploy. No medical attention was required. No injuries were sustained. A police report was filed. The vehicle was not diagnosed or repaired. The contact then stated that on a separate occasion while driving at normal speed, the front passenger side wheel inadvertently locked without warning. As a result, the strut detached from the control arm which caused the attached trailer to detach and crashed into the vehicle that caused the vehicle to crash into a ditch. the rear passenger side air bags deployed however, the front driver and passenger side air bags failed to deploy. No injuries were sustained. No medical attention was required. A police report was filed. The vehicle was towed to the contact’s residence and then towed to a collision center. The vehicle was not diagnosed or repaired. The contact referenced an unknown NHTSA recall related to the Service Brakes, Hydraulic as a possible cause. The manufacturer was not notified of the failure. The failure mileage was approximately 51,117.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11489094October 13, 2022
POWER TRAIN:AUTOMATIC TRANSMISSION
The contact owns a 2017 GMC Sierra. The contact stated while driving at various speeds, the transmission inadvertently shifted from high to low gears and the RPMs revved up. There was no warning light illuminated. The vehicle was taken to the dealer where the failure could not be duplicated. However, the failure recurred while driving. The vehicle was then taken back to the dealer where it was diagnosed that the valve body, the clutch, the piston, and the transmission plates needed to be replaced. The vehicle was repaired, however, the failure persisted. The contact stated that while driving and an undisclosed speed, the transmission was shifting hard into a lower gear, then into third gear without warning. The vehicle was taken back to the dealer but was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11488661October 10, 2022
POWER TRAIN
My vehicle shakes at different speeds. Do to the admitted mistake that GM said certain assembly lines put the wrong Transmission fluid which causes corrosion to Transmission. Im paying $900 to correct the problem. They should have recalled the vehicles that was affected.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11488046October 5, 2022
STEERING
The power steering failed on three different occasions, all while making a low speed turns. Two of the times it was only a matter of a half a second or so, but the most recent time it failed and I couldn't steer my truck at all and I almost got in an accident. I needed to come to a complete stop, and put my vehicle in park, the power steering warning light had came on. After I stopped, it was another 5-10 seconds before the warning light went off and the steering returned.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11487533October 2, 2022
SERVICE BRAKES
Hi I purchased this used 2017 GMC Sierra Denali on October of 2021 it’s been just only one year and while on the road with my trailer attached , I suddenly got a pop up on my display saying “service trailer brake system “ which caused me to be distracted with the chime and the warning being displayed repeatedly and overall left me with no power at all to my trailer brakes I would like to have this recalled and fixed at little to no cost due to the fact of the cheap and unsafe parts that are installed on these types of trucks by GMC
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11485754September 21, 2022
POWER TRAIN
The contact owns a 2017 GMC Sierra 1500. The contact stated while driving approximately 45 MPH and slowing while exiting the highway, the vehicle started to lose forward momentum and lurch forward. The contact had not depressed the brake pedal but instead attempted to accelerate however, the RPM increased but the vehicle lost motive power. The contact stated there was no warning light illuminated. The contact had taken the vehicle to a local dealer where it was diagnosed and determined that there were no mechanical issues found. The vehicle was not repaired. The contact stated that the failure had become recurring. The manufacturer had not been informed of the failure. The failure mileage was approximately 69,000.
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
#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
#11480641August 22, 2022
STRUCTURE:BODY, UNKNOWN OR OTHER
The paint has substantial flaking/ easy scratching casting spots down to primer and bare metal
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11480169August 19, 2022
UNKNOWN OR OTHER
My air conditioning condenser has a leak and leaked all my refrigerant out of the system. From my research and talking to the dealership mechanic, it is a problem GM refuses to do anything about unless your vehicle is under warranty, and they are aware this is a big problem, numerous complaints.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11480033August 18, 2022
UNKNOWN OR OTHER
I live in Corona CA where the temperatures easily exceed 100f in the summer months. I was picking my kids up from school yesterday and the AC started blowing warm air. We had to open the windows which brought in even warmer air into the cab. After a little research online, I found there are numerous Sierra owners experiencing the same issue. 99% of the failed AC is due to a "weak weld on the condenser."(see attached photo) Unfortunately, I could not find any recalls or TSBs related to this problem. With the exorbitant amount of Sierra owners experiencing the same-exact-issue, GM MUST be aware of this issue. This should be determined a safety recall, since this is a passenger vehicle, manufactured to provide safe in-cab temperatures for human beings.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11478871August 11, 2022
AIR BAGS
Airbag light coming on.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11478487August 9, 2022
ELECTRICAL SYSTEM, SERVICE BRAKES
The service trailer brake system keeps coming on. The notification constantly alerts and it’s distracting my driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11478493August 9, 2022
UNKNOWN OR OTHER, POWER TRAIN, FUEL/PROPULSION SYSTEM
Cold start after vehicle sits for a while vehicle shark bites and stutters. When you try and drive vehicle before it’s been warmed up significantly. It’s a safety concern because it feels very danger and could cause an accident. Alamo At caused my truck to stall out the other day with my children in it and a large accident. Dealership is dismissed my concern and says it’s normal gmc defects that I have to deal with. I will sue GMC if I have to.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11478276August 8, 2022
SERVICE BRAKES
Brake are very spongy all the time we’ll While driving in parking lot at low speed we lost brakes happen to hit person in front. This has been a continuous problem to point we are scared to even use the truck to go to store. Took it to Firestone. They told me it was the master cylinder. So they replaced that, replaced the front rotors and pads, did a fluid exchange abs as well? Don’t know what that is. On the internet there is tons of this issue. I even see GMC 1500 is having this issue and there is a recall for the recalibration electric brake controller? Couldn’t it include the full Sierra line?. Why not on the 2500, 3500? Looks to be same system? Rotors and calipers are different thats it If anyone can help please let me know. It’s not covered under warranty and they want to replace some pump for $1500. I just paid $1500 for something totally different
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11478294August 8, 2022
STRUCTURE:BODY
This complaint is about the automatic extending/retracting foot steps on my GMC Sierra. The step is supposed to extend outwards when the door is opened and retract back under the truck when the door is closed. Instead, when the door is opened the step extends and at random will retract back inwards. Aside from being annoying this is actually dangerous as the other day i was exiting my truck with one foot on the step and the other reaching down to the ground when the step started retracting. The foot on the step was pulled under the truck and got stuck in the step. This threw me off balance and the other foot hit the ground at an angle and twisted my ankle. I called a local gmc dealership about it and they said they have seen a lot of trucks come in lately with the same issue and would have to replace the entire step for $1800. I brought it to an independent shop and they cleaned and greased the hinges so it happens less often now but it is still a problem. There are no warning lights or messages on the vehicle. It will also extend and retract at random when the truck is parked and off. This began happening around March of this year.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11477992August 7, 2022
SERVICE BRAKES, ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
TRAILER BRAKE SYSTEM ERROR COMES ON. I DONT EVEN OWN A TRAILER OR HAVE EVER TOWED A TRAILER. IT CUTS POWER MOMENTARILY AND IS VERY VERY UNSAFE. PLEASE FIX BEFORE SOMEONE GETS HURT.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11475406July 22, 2022
SERVICE BRAKES
A Service "Trailer Brake System" message keeps coming up on my display constantly, over and over and over, I can't see the speed display, I can't hear the turn signal sound, it's extremally distracting and loud. When I looked this message up I found the wiring was faulty and my trailer brakes won't work.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11474777July 19, 2022
SERVICE BRAKES
Service Trailer Brake warning comes on repeatedly. Trailer brakes fail to work.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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