2020 GMC Acadia engine problems
24 owner complaints filed with NHTSA name the engine on the 2020 GMC Acadia — 25% of all complaints for this model year.
What owners report
“[Symptom & Safety Hazard] While driving my 2020 GMC Acadia 3.6L V6, the Driver Information Center displayed the warning: "Steering Assist Reduced, Drive With Care" (SARDWC). Steering effort increased abruptly, the engine temperature gauge dropped to cold/zero, and the HVAC system lost…”
filed Jul 12, 2026
“Thermostat and cooling sensor went out on my car. GMC issued a special coverage bulletin for 2021 Acadia since it's a widespread issue but not the 2020 (mine) which is also a widespread issue looking online. The repair is over $1000 and should be covered!”
filed Jun 22, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Acadia years
| Year | Reports | Share |
|---|---|---|
| 2025 Acadia | 5 | 8% |
| 2024 Acadia | 9 | 16% |
| 2023 Acadia | 11 | 28% |
| 2022 Acadia | 14 | 30% |
| 2021 Acadia | 29 | 20% |
| 2019 Acadia | 49 | 13% |
| 2018 Acadia | 32 | 8% |
| 2017 Acadia | 61 | 9% |
| 2016 Acadia | 12 | 5% |
| 2015 Acadia | 17 | 7% |
| 2014 Acadia | 45 | 10% |
| 2013 Acadia | 21 | 16% |
Other reported problem areas on the 2020 GMC Acadia
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.