GMC Sierra Complaints (2015)

916 consumer complaints on file.

#11644265February 22, 2025
ENGINE
There is a known defect by other consumers with the same year/make/model as mine that causes the radiator to leak. I replaced the original radiator about a year ago with a new GM radiator (84207654) and it’s now leaking as well.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643824February 20, 2025
SERVICE BRAKES
Brakes fail at low speeds
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643700February 19, 2025
ELECTRICAL SYSTEM
Infotainment screen not responsive to touch, will not reset and freezes with black screen message warning drivers to not take their eyes off the road. Because of the latent defects known to GM in the screen, it is impossible to reset the controls (the "OK" button will not clear the error message). The freezing and non-responsiveness and elimination of outside temperature display creates a driver distraction hazard trying to clear it while driving, and prevents the driver from being alerted to outside temperatures dropping below freezing. GM customer care refused to provide any assistance for the $1,045 repair charge quoted by the dealer and refused to acknowledge that this is an inherent vehicle defect well established, that already produced a service advisory and redesign of the defective screen. Problem has existed for quite some time, and infotainment issues were initially reported to dealer on 3/9/2015 (2 months after delivery) without adequate resolution.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643817February 19, 2025
STEERING
Unknown
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11640994February 5, 2025
ENGINE
Purchased this vehicle on 06/29/2023 from Robideaux Motors in Coeur d Alene ID. with 81,397 mile on the odometer. On 01/05/2024 the 6.2L engine with 84,109 miles, started having a ticking sound after starting it at my son's house two miles from home. I called the dealer and was told to bring it in for diagnosis by a tech. While driving the truck to the dealer the ticking got worse and motor started to shudder and the check engine light came on. Cause was a misfire on cylinder 4 due to bent push rod and failed lifter. Replaced lifter bank 2 with new push rod. Total cost was $2,852.74 (have invoice). After many calls and letters to my extended warranty company, they finally paid $1688.54 of the total cost. On 08/29/2024 the same ticking sound started again as well as the shudder and check engine light. I had it towed back to Robideaux Motors and was told it was a misfire on cylinder 6 due to lifter failure. Robideaux Motors did repair under their repair warranty. I know that this vehicle is not included in class action suit, due to the year. I feel this to be a continuing problem with the GM 6.2 and 5.3L motors encompassing many model years. Just wanted to document that the number of years covered in the law suit should be expanded.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11638850January 27, 2025
ENGINE
Truck is equipped with AFM and the lifters failed causing a no -power situation. First happens at 57,000 miles then again at 82,000 miles. Not only was this a dangerous situation, but also a very expensive situation. GM knows these are defective and should have been recalled and repaired on their dime, not mine. Pictures of bill included are only of the first repair. Second repair pictures are available upon request.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11638259January 24, 2025
POWER TRAIN
The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 30-35 MPH in third and fourth gears, the vehicle vibrated and shuddered significantly. The check engine warning light was illuminated. The contact stated that upon shifting out of third and fourth gear, the vehicle responded as needed. The contact stated that the failure progressively worsened while driving in third and fourth gear. The vehicle was taken to Wyatt's Automotive Repair, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 97,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11634351January 6, 2025
POWER TRAIN
The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly downshifted with no warning light illuminated. The vehicle was taken to the dealer where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The manufacturer was not made aware of the failure. The approximate failure mileage was 147,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11632894December 28, 2024
POWER TRAIN
I've been having transmission issues which cause harder shifting than usual. upon research, I found that the 2016 GMC Sierra's have a special coverage that replaced the transmission harness which throws the code P0711 for the temperature sensor and P0700 which is the generic transmission code. The only difference between my VIN and the VINs covered under this special coverage is that my Sierra is a 2015, everything else is the same down to the part number of the known faulty transmission harness.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11630788December 15, 2024
POWER TRAIN
On 12/11/24 I had exited I95N, While traveling down the exit ramp I felt my truck buck, upon the light changing I went to accelerate and the truck transmission slipped and barely got into first gear. I again came to another traffic light and the transmission did the same thing. I put my hazard lights on and shifted through all the gears and finally I was able to get the truck moving. The following morning I brought the truck to my local mechanic and I was told I needed a new transmission, which is going to cost me $4400. About a year prior my daughter had a similar problem with her 2018 Chevy Silverado in which she had to replace the transmission valve body. With both of these occurrences the truck gives you no warnings and just stops driving and causes a real threat to safety.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11629372December 7, 2024
STEERING, ELECTRICAL SYSTEM
After recall the problem got worse
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11628404December 2, 2024
UNKNOWN OR OTHER
Had tailgate switch safety recall completed in June 2024. Beginning November 25th, 2024, tailgate switch began randomly opening tailgate while driving and parked with vehicle turned off. The lower “push button” in attached photo is the one that controls the tailgate. One time while closing tailgate, the switch kept activating repeatedly for nearly a minute before it stopped. We live in the mountains and have been having heavy fog and rain. Contacted dealer and dealer stated that we would be responsible for repair. Contacted dealer on December 2, 2024 and dealer scheduled truck for repair December 18th 2024. Truck is not equipped with any indicator if tailgate comes open. Have to keep tailgate strapped shut at all times now.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11628414December 2, 2024
FUEL/PROPULSION SYSTEM, STRUCTURE:BODY, SUSPENSION
Cross member holding file tank rusted through causing the fule tank to not be supported and shock mounts no longer support the shocks to frame causing shocks to bounce around with possibility to puncher fule tank or lines Also rear cross member that holders electrical components rusts off Excessive rust on top of fule tank causing a inability to make repairs without replacing fule tank in entirety
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627668November 27, 2024
ENGINE
Lifter failure cylinder 1 at 82458 should be a recall
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626328November 20, 2024
POWER TRAIN
The contact owns a 2015 GMC Sierra 1500. The contact stated that while depressing the accelerator pedal, the RPM's increased; however, the vehicle failed to properly accelerate. During the failure the trailer hitch and 4WD messages were displayed. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The failure mileage was 119,453.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626023November 18, 2024
SERVICE BRAKES
Intermittently with slow driving such as parking maneuvers or creeping slow traffic at stop lights the brake pedal becomes very soft and depresses much more than normal and the brake action is decreased. Sometimes with this soft pedal it sounds like ABS is engaging. Pumping pedal sometimes restores brake performance.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11626068November 18, 2024
ELECTRICAL SYSTEM
I was driving my truck with my family in the car. I turned on the rear window defrost and a few minutes later the rear window blew out and made a loud bang noise. Also a burning smell took over the rear of vehicle. I did some research on line and saw this has happened to several owners of this model year pick up. It’s 100% a safety hazard. Not sure what to do since I don’t see a recall for this common problem. Thank you.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11620052October 16, 2024
ENGINE
The contact owns a 2015 GMC Sierra 2500. The contact stated that while driving at 45-48 MPH, the check engine warning light illuminated. The contact used a vehicle scanner and retrieved diagnostic test code P0420 that indicated an efficient operating below threshold, and the contact cleared the code. Additionally, the contact stated while the exhaust filter was being cleaned, an unknown message was displayed. Upon clearing the code, the check engine warning light illuminated again. The vehicle was taken to the local dealer, who informed the contact that there was no warranty coverage. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 83,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11619273October 11, 2024
ENGINE
The motor goes into a V4 to v6 to v8 Mode on its own .. in which it makes the lifters & pistons change to cause problems with the motor
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11615649September 20, 2024
ENGINE
Had to have transmission replaced and engine work (lifters and cam) on a GM truck with 100,000 miles on it. Cost $8,000. Was told by both mechanics that they've seen many of this same issue with this same year truck for GM.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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