2023 GMC Sierra 1500 vehicle speed control problems
11 owner complaints filed with NHTSA name the vehicle speed control on the 2023 GMC Sierra 1500 — 2% of all complaints for this model year.
What owners report
“Purchased above listed vehicle new in XXX. Immediately noticed a 'coolant' smell in cab. brought vehicle in for coolant smell issue on XXX and XXX. We were told that there was no issue until finally on XXX we were told the radiator needed to be replaced at OUR expense. XXX we received a letter from…”
filed Sep 10, 2026
“I was driving my family on the highway and my truck completely shut down. The screen flashed a warning and it slowly started decelerating. Thankfully I was able to make it to the shoulder of the road safely. Engine failure was a known safety issue with my model of truck, but I completed the L87…”
filed Jul 7, 2026
“The truck shut off and would just crank. It threw the code P129F. And wouldn’t start up until after 15 minutes.”
filed Sep 16, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Vehicle Speed Control problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Sierra 1500 | 3 | 3% |
| 2025 Sierra 1500 | 7 | 6% |
| 2024 Sierra 1500 | 10 | 3% |
| 2022 Sierra 1500 | 9 | 2% |
| 2021 Sierra 1500 | 7 | 1% |
| 2020 Sierra 1500 | 11 | 2% |
| 2019 Sierra 1500 | 10 | 2% |
| 2018 Sierra 1500 | 6 | 2% |
| 2017 Sierra 1500 | 11 | 3% |
| 2016 Sierra 1500 | 4 | 1% |
| 2015 Sierra 1500 | 7 | 1% |
| 2014 Sierra 1500 | 12 | 2% |
Other reported problem areas on the 2023 GMC Sierra 1500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.