2017 GMC Sierra 1500: sudden unintended acceleration

5 of the 357 complaints about the 2017 GMC Sierra 1500 describe sudden unintended acceleration.

owner complaints: 5
of this car's complaints: 1%
recalls: 0

Is there a fix? 2 service bulletins cover this area of the car. See below

Sudden unintended acceleration by model year

2026
2
2025
2
2024
3
2023
1
2022
1
2021
2
2020
3
2019
4
2018
4
2017
5
2016
2
2015
3
2011
6
2009
1
2008
1
2007
1
2001
1
1998
1
1997
1

What owners say

Filed Feb 4, 2026 · OH

While sitting at a stop sign heard a loud bang and truck lunged forward as if we were rear ended . Actually thought we were . Drove about 20 miles and transmission went out . Even though i had foot on brake truck still went forward . Had to have transmission replaced at $6421.58 in Florida while on vacation . Have researched on internet and found several cases exact same thing . Even shop that did work said GM had a problem but was doing nothing as of yet .

Filed Oct 2, 2024 · Transmission · NV

The automatic transmission occasionally slips and slams hard into gear between first and second gears, causing the truck to lunge forward when attempting to stop. This could potentially cause the truck to hit another person or vehicle when attempting to stop. This problem was immediately observed upon receiving the new truck in 2017 and is ocurring more frequently over time. The problem was reported to and taken in to the GMC dealer. They advised that they were unable to reproduce the problem during their time with the truck. There have been no safety incidents thus far. No warning lamps or messages have been displayed on the dashboard.

Filed Apr 25, 2019 · Transmission · LA

"have taken my 2017 gmc sierra into the dealership twice for transmission issues, the last time was a month ago. Both times I was told that there wasn't anything wrong but that the transmission software was 're-flashed' and that the transmission would have to 're-learn my driving habits'. My truck is still having problems. While upshifting from 1st to 2nd gear, the transmission sometimes hesitates before it engages and then causes the truck to lunge forward with a huge slam. While downshifting from 2nd to 1st gear, the transmission will make a very noticeable 'clunk'. I'm about to take it back a 3rd time. This is extremely frustrating my bought my truck less than 2 years ago and it only has 25,000 miles."

Filed Jun 1, 2018 · Transmission · 1,000 miles · OH

When driving at slow parking lot speeds or when coming to a complete stop the vehicle intermittently lunges, surges or jolts, causing the vehicle to move forward or backwards unanticipated. Sometimes the jolt feels like another vehicle has hit this vehicle from the rear, again causing it to lunge forward.

Filed Oct 17, 2017 · Transmission · 150 miles · MA

Unintended acceleration when slowing down to come to a stop the vehicle will occasionally engage a lower gear very suddenly and lurch forward. The resulting force is enough to overpower the braking effort being provided by the driver and the vehicle will move forward several feet before the driver can react and apply more braking force to stop the vehicle. The issue occurs randomly and infrequently at very slow speeds (5-10mph). There have been several occasions where ive been braking to stop at a stop light and been forced into the middle of an intersection. Im concerned the issue could cause the vehicle to strike the car in front of it or a pedestrian crossing in front of the vehicle as it stops for a crosswalk. Multiple unsuccessful repair attempts have been made by the dealer. I attempted to force the manufacturer to buy the vehicle back from me through the massachusetts lemon law and since that time they have denied the existence of a problem. I have seen several instances online where consumers with the identical vehicle (all with the 8 speed transmission) complained of the same problem.