2017 GMC Sierra Denali problems

Filed Oct 2, 2026 · Electrical · 186,000 miles · UT

The contact owns a 2017 GMC Sierra Denali 2500. The contact stated that while driving 25 MPH downhill, the message “Reduced Engine Power” was displayed. While the message was displayed, the trailer brakes and exhaust brake became inoperable, and the braking distance increased. The failure mileage was approximately 186,000.

Filed Mar 30, 2026 · Engine · 209,000 miles · GA

The contact owns a 2017 GMC Sierra 2500 Denali. The contact stated that while driving at an undisclosed speed, the vehicle went into LIMP Mode. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the knock sensor had failed and needed to be replaced. The vehicle was not repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 209,000.

Filed Mar 9, 2026 · Transmission · 103,000 miles · KS

The contact owns a 2017 GMC Sierra Denali. The contact stated that while driving on the highway at an undisclosed speed, the vehicle jerked, failed to accelerate, and stalled. The vehicle was unable to shift into third gear. The check engine warning light was illuminated. The vehicle was drivable and was taken to the dealer. The vehicle was diagnosed with a wiring harness failure on the transmission. The vehicle was repaired based on the diagnostic test but failed to fix the vehicle. The vehicle was parked at the residence and was undrivable. The failure mileage was approximately 103,000.

Filed Nov 10, 2025 · Engine · 105,000 miles · WI

The contact owns a 2017 GMC Sierra Denali. The contact stated that while driving approximately 40 MPH, the check engine warning light illuminated. The contact stated that the vehicle was shuddering and vibrating. The contact pulled over and opened the hood with the engine running. The contact stated that there was an abnormal ticking sound coming from the engine. The vehicle was driven to an independent mechanic, who diagnosed the vehicle and determined that the fuel injectors needed to be replaced. The vehicle was repaired; however, the vehicle was still running rough. The contact was advised by the mechanic that the fuel injectors needed to be reprogrammed, and the vehicle was taken to a dealer. The dealer reprogrammed the fuel injectors, but the vehicle was still running rough. The dealer had not opened the engine up to diagnose the failure; however, the dealer thought that there might be a failure with connecting rods. The vehicle was not repaired. The contact researched online and related the failure to the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling); however, the VIN was not included in the recall. The manufacturer was not informed of the failure. The failure mileage was approximately 105,000.

Filed Feb 29, 2024 · Airbags, Seat belts · 32,000 miles · OK · crash · 1 injury

The contact owned a 2017 GMC Sierra Denali. The contact stated that while driving at 65 MPH, he briefly fell asleep. As a result, the vehicle left the roadway and collided with the exit median, coming to a complete stop after careening into a side ditch. The air bags did not deploy, and the seat belt failed to properly retrain, resulting in head and neck injuries. No warning lights were illuminated. A police report was filed, and injuries were reported. The contact was transported to an area hospital by EMT and treated for various lacerations to his head and arms and an unstable fracture of the C7 in his lower neck, later requiring surgery. The vehicle was towed to a tow yard and deemed a total loss by the contact's insurance provider due to a bent chassis. The manufacturer was notified of the failure, and they inspected the vehicle, concluding that the impact was not sufficient to trigger air bag deployment, estimating that the vehicle was traveling between 1 and 4 MPH and that the air bags were functioning properly. The VIN was not available. The failure mileage was 32,000.

Filed Mar 9, 2022 · TX

The contact owns a 2017 GMC Sierra Denali. The contact was notified by her state inspection office that her vehicle was included in the federal safety agency Campaign Number: 21V496000 (Equipment). The dealer was notified about the recall and informed her that parts for the recall repair were not yet available. The manufacturer had been notified of the recall and contacted several dealers in her area; however, the dealers also did not have part available for the recall. The contact stated that the manufacturer had exceeded a reasonable amount of time for the repair. The contact had not experienced a failure. Parts distribution disconnect.

Filed Apr 14, 2021 · Lights · TX

2017 gmc denali. Consumer writes regarding an inoperative passenger tail light. *ld the consumer stated the after removing the fixture, he discovered there was no bulb. The only way to repair the failure was to remove the entire fixture.

Filed Mar 7, 2021 · 51,800 miles · KY

My air conditioning stopped working at only 51,800mi and just over 3 years old on my 2017 gmc sierra 1500 denali. My mechanic said my AC condenser is leaking and needs to be replaced. He said it is a widely known issue but not a recall.

Filed Mar 4, 2021 · Suspension · 84,000 miles · TN

Front struts with electronic control went out while driving.

Filed Nov 27, 2020 · Wheels · ME

My bridgestone tires have dry rotted all 4 tire manufacturing date is 2017 same as my truck new I have 28 thousand miles on the truck took it to the dealership they took pictures of all tires and told me they were very bad the tires show little wear on the tires all of the dry rot in on the sidewalls only the dealership said there has been problems with these tires and told me to call gm and see if they would do something as they would not I did call gm and all they would offer up would be $100 dealership voucher great jason doyle took pictures of the tires he works at bill dodge 2 saunders way westbrook maine his phone 207‑857‑4944