2018 GMC Acadia electrical system problems
108 owner complaints filed with NHTSA name the electrical system on the 2018 GMC Acadia — 28% of all complaints for this model year.
What owners report
“For the last 6 months, I keep getting a "shift to Park" message on my dashboard indicating that my vehicle is not in park (in which it is). The problem is getting wors, so I called GMC on 5/14/26 to inquire and was informed that my VIN number WAS not include in the resent class action lawsuit for…”
filed May 15, 2026
“The contact owns a 2018 GMC Acadia. The contact stated that while the vehicle was parked and turned off, the “Shift-to-Park” warning light illuminated with a continuous audible alert. The vehicle was unable to recognize that the transmission was in park(P). Several attempts were needed to shift to…”
filed Apr 27, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Acadia years
| Year | Reports | Share |
|---|---|---|
| 2025 Acadia | 4 | 7% |
| 2024 Acadia | 8 | 15% |
| 2023 Acadia | 9 | 23% |
| 2022 Acadia | 14 | 30% |
| 2021 Acadia | 37 | 25% |
| 2020 Acadia | 27 | 28% |
| 2019 Acadia | 103 | 27% |
| 2017 Acadia | 193 | 28% |
| 2016 Acadia | 25 | 11% |
| 2015 Acadia | 27 | 11% |
| 2014 Acadia | 90 | 20% |
| 2013 Acadia | 38 | 28% |
Other reported problem areas on the 2018 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.