10.0

really awful
Crashes / Fires:
1 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
11,140 miles

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« Read the previous 20 complaints

problem #27

Dec 312022

Sierra 1500

  • miles
Driving down the road. Thankfully it was late at night and the roads were empty. But the truck shut down and brakes locked up and steering wheel locked. Once I was at a full stop. I turned the truck off and back on and was able to drive home. But I called Gmc regarding this issue and brought they couldn-??t find anything wrong

- Haines City, FL, USA

problem #26

Nov 142022

Sierra 1500

  • miles
I purchased my vehicle in January 2022. On 11/18/22 I captured a photo across my dash stating that the trailer brake system needed to be serviced (photo attached). This was the second time this message appeared within days. The vehicle continued to beep and flash for a long period of time clearing out my dash screen making it UNSAFE TO DRIVE. The beeping noise startled me, almost causing an accident on the freeway. I did not know what the warning meant as I wasn't towing a trailer. I wasn't towing anything and could not turn off the beeping sound or the flashing screen, in spite of hitting the dismiss button. I don't know why the message continued to go on and assuming there is an electrical shortage somewhere with the wiring. This needs to be recalled and fixed as it is a manufacturer issue. I do not have any aftermarket parts installed in this vehicle. This same alert message appeared again yesterday 12/5/22 as I was driving back from the airport. It continued for almost 2 hours while on the freeway and again I was not pulling or towing anything. I pulled over, checked my tailgate, turned off the vehicle and turned it back on and the message continued until I got home. It is very alarming and annoying and scared me. This is a big safety hazard and almost caused an accident again as the alert is very loud and flashes across, clearing out your screen, causing you to take your eyes off traffic looking ahead. This time, I was traveling in heavy traffic. Please investigate this further. Thank you

- Salida, CA, USA

problem #25

Nov 202022

Sierra 1500

  • miles
The trucks power source starts failing when going at about 15 mph and turning a bit, it happens when coming to a stop or when you-??re about to park. The steering wheel starts getting super stiff and all the power buttons and lights start going dim and the truck shuts off. The truck can turn on right after but at times it takes about 15 minutes for the system to reboot and then the truck will finally turn. When this happens you can-??t turn on hazard light making it a dangerous situation at night! I-??ve talked to other gmc owner with the Denali models and they have stated as well that they-??ve had the same issue occur at least once to them, this truck currently does it very often and even more in the cold weather! There has been a recall on earlier an earlier year of the same model truck but just not this one making it tedious to try to get it fixed. I-??ve took it to the mechanic and they-??ve changed the ground wires, it made the problem just happen less frequently, but it still occurs.

- Austin , TX, USA

problem #24

Nov 082022

Sierra 1500

  • miles
As I am driving the truck I notice that as the accelerator is pressed the truck does not respond as it should. I have taken this to a service repair shop and they have stated it is a ongoing issue with these vehicles. So I have taken it upon myself to look online and sure enough OTHERS have also states the same things.

- Tuscaloosa, AL, USA

problem #23

Nov 082022

Sierra 1500

  • miles
While making a quick left hand turn at low speed, steering wheel suddenly locked, all lights and electrical went out and engine died. This left me stuck in a busy intersection with no lights. I was able to restart engine after a minute or so. Error message appeared "roll driver side window up, etc." Needless to say, no longer have confidence driving my truck not knowing when this situation may re-occur.

- Anderson Island, WA, USA

problem #22

Aug 082022

Sierra 1500

  • miles
The service trailer brake system keeps coming on. The notification constantly alerts and it-??s distracting my driving.

- Columbia , MS, USA

problem #21

Dec 152021

Sierra 1500

  • 80,000 miles
The contact owns a 2017 GMC Sierra 1500. The contact stated that while the vehicle was turned off, the driver-??s and passenger-??s side running boards would erroneously activate and repeatedly extend in and out. The contact was concerned that the failure created a trip and fall, and pinching hazard. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was also notified of the failure. The failure mileage was 80,000.

- Tinley Park, IL, USA

problem #20

Aug 172021

Sierra 1500 8-cyl

  • 56,000 miles
The contact owns a 2017 GMC Sierra 1500. The contact stated while driving 55 MPH, the vehicle began to shift hard, started shuddering, and lost electrical power. There was no warning light illuminated. The contact was able to push the vehicle to the side of the road with assistance. The contact was able to restart the vehicle however, the vehicle was shifting hard and was shuddering while driving. The vehicle was taken to the local dealer where it was diagnosed that the main power cord had failed and needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken to a second dealer; Fresno Buick GMC (5515 N Blackstone Ave, Fresno, CA 93710) where it was diagnosed that the transmission torque converter and the engine mounts needed to be replaced. Additionally, the dealer diagnosed that the coolant reservoir had failed. The vehicle was not repaired. The manufacturer was notified of the failure through email. The failure mileage was approximately 56,000.

- Coarsegold, CA, USA

problem #19

May 062022

Sierra 1500

  • miles
The trailer brake System sensor keeps going off making the vehicle unbearable to drive. The transmission also jerks when it gets to 7 mph. I've taken the truck to the GMC dealer over 3 times to check the transmission problem and it still jerks. This has been a on going problem since the purchase of the vehicle.

- Mansfield, TX, USA

problem #18

Apr 082022

Sierra 1500

  • miles
My complaint is of the intelilink system in this vehicle. While driving the system would change screens, when turned off would turn itself back on. It would hang up on phone calls, would make all these beeping sounds and change stations on radio. It was very distracting and I feel dangerous in that especially at night as I said would not stay turned off so the beeping and changing of the screen that would make the large(8-??) screen go from night mode to day mode and shine into your eyes. When navigating to somewhere system would show that you were in one place, when you were possibly 20 miles from where it would show you to be. Bad because it maybe showing and telling you turn by turn directions and all of a sudden it-??s gone. This problem has been diagnosed by a dealer and repaired at a cost of $887.85. Was told that it is a very common repair that they do. Have contacted gm customer service and let them know that I thought a 2017 vehicle with 35000 miles should not have this problem and would like some kind of compensation for the problem and repair

- North Port, FL, USA

problem #17

Apr 012022

Sierra 1500

  • miles
while driving I get a repeating alarm chime and "Service Trailer Brake System" caution statement on dash panel. This alarm will go off as often as once every three seconds. It is both startling and a hazard to the driver and while towing condition of the trailer brakes is unknown.

- St Louis, MO, USA

problem #16

Jan 202022

Sierra 1500

  • miles
Service trailer brakes light pops up and chimes over and over again. I've never pulled a trailer. It's distracting and will randomly go off. Seems to go off when gas is below 1/4 tank. Sometimes it goes months without happening. Sometimes it happens a few days in a row. The dealership says they can't do anything unless they see it go off.

- Anoka, MN, USA

problem #15

Mar 032022

Sierra 1500

  • miles
Rear window defroster started smoking and broke my back window. Known issue. Recalled only in Canada not in US but US vehicle having same issue.

- Feasterville , PA, USA

problem #14

Feb 062022

Sierra 1500

  • miles
The front driver side window won-??t roll down or engage; the a/c blows warm/hot on the drivers side vents; the stereo system continues to, -??Glitch-?? changing stations, displaying other information without the screen being touched. These often cause discomfort by not operating properly. The dealer did not suggest any concerns upon my purchasing the vehicle. Vehicle was never taken to a certified GMC dealer for these issues.

- Barrigada , GU, USA

problem #13

Feb 262022

Sierra 1500

  • 84,000 miles
The contact owns a 2017 GMC Sierra 1500. The contact stated that while stopped at a traffic sign, the vehicle lost motive power. The vehicle was towed to the dealer and diagnosed with Vehicle Control Module (VCM) failure. The contact was informed that the VCM needed to be replaced. The vehicle was not repaired and remained at the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 84,000.

- Akron, OH, USA

problem #12

Dec 302021

Sierra 1500

  • miles
My truck trailer Brake system continues to come on and my doors are locking and unlocking. It has my 4x4 trans rubbing as well. Its a non stop issue everytime I get into my truck it does this and it happened out of no where. I had this truck a little over a year now.

- Saint Louis, MO, USA

problem #11

Nov 062019

Sierra 1500

  • miles
Lost of acceleration at a set speed the throtal stopped to increase the speed and just flooped to floor. When the speed slowed to a set point, acceleration control returned. When it hit the high setting it again lost control to increase speed. This happened every time I reached the drop off speed. Why dose this happen"?" one time I was on a highway passing two trucks on a upgrade when this happened the #2 truck went to pass #1, the #2 truck was on my rear thank god acceleration returned. I reported this occurance to manufacture & to "NHTSA" over a year ago. I got "no" answers or responce from anyone!!!

- Feasterville Trevose, PA, USA

problem #10

Nov 042021

Sierra 1500

  • miles
Randomly all electronics shut down engine stalls and lane assists wont let me turn wheel while driving in road. Normally at slow speeds. Get random warning lights that go away after seconds. When I activate a window switch all the electronics turn off and on. This happens randomly. No codes have been left to pull up when trying to solve issue. Twice with children in the car in traffic that we have almost got in a wreck due to these random issues.

- Saucier, MS, USA

problem #9

May 282021

Sierra 1500

  • miles
Driving at approx 55 to 60 MPH with rear defrost on. Began to smell a burning/electrical smell, and within 90 seconds heard a loud bang. Rear window (stationary piece on drivers side) had shattered. Smell presumably coming from the rear window defrost component. No warning lights or messages on the truck. My son was sitting in the rear seat at the time so this is a huge safety risk. This has not yet been repaired. Window replacement is scheduled with Safelite on 6/8, consult with dealer on rear defrost set for 6/10. Photos are available.

- Commercial Point, OH, USA

problem #8

Apr 252021

Sierra 1500

  • 71,000 miles
The contact owns a 2017 GMC Sierra 1500. The contact stated that -??hood open-?? was displayed on the instrument panel. The contact inspected the hood and confirmed that the hood was securely locked. The vehicle was not taken to be diagnosed. The manufacturer was not informed of the failure. The VIN was not available. The failure mileage was approximately 71,000.

- Wannaska, MN, USA

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