2020 GMC Sierra 1500 engine problems
213 owner complaints filed with NHTSA name the engine on the 2020 GMC Sierra 1500 — 48% of all complaints for this model year.
What owners report
“The truck starting making a ticking noise within 24 hours the check engine light was on and it starting shuttering. I got it to the dealership were they informed me of lifters failure, and catastrophic engine failure. Dealer is recommending replacing engine since it's a 2020 and not part of recall.”
filed Aug 4, 2026
“I brought my truck into a certified GM dealer for recall work on the ground strap. I left the dealership and multiple lights came on dash: check engine light, service ecs, traction control, service parking brake, steering assist reduced. 7 minutes later the engine began miss firing. The dealer…”
filed Aug 3, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Sierra 1500 | 44 | 64% |
| 2025 Sierra 1500 | 39 | 42% |
| 2024 Sierra 1500 | 152 | 47% |
| 2023 Sierra 1500 | 183 | 44% |
| 2022 Sierra 1500 | 215 | 40% |
| 2021 Sierra 1500 | 275 | 52% |
| 2019 Sierra 1500 | 283 | 46% |
| 2018 Sierra 1500 | 63 | 21% |
| 2017 Sierra 1500 | 56 | 16% |
| 2016 Sierra 1500 | 37 | 11% |
| 2015 Sierra 1500 | 83 | 12% |
| 2014 Sierra 1500 | 69 | 9% |
Other reported problem areas on the 2020 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.