2020 GMC Terrain Electrical System Problems
NHTSA lists 28 Electrical System complaints for the 2020 GMC Terrain, 14% of its 196 total complaints for the year. Owners most often report the instrument panel and infotainment screen going black while driving, with a median failure mileage of 5,600 miles. No related recall is listed.
- Electrical System complaints
- 28
- 14% of 196
- Crashes reported
- 0
- Fires reported
- 1
- Injuries reported
- 0
- Median mileage
- 5,600 mi
- Related recalls
- 0
Typical electrical symptoms owners report
- Instrument panel and infotainment screen go completely black while driving, sometimes for about 20 seconds before returning on their own.
- Vehicle fails to start after being parked for a period with no prior warning lights or symptoms.
- Infotainment system shuts off and disables the turn signal, with Bluetooth and USB connections repeatedly dropping.
- OnStar reports the airbag system offline for an extended period with no dash warning light appearing until days later.
- Interior dome light stays on continuously and cannot be switched off.
- Radio volume jumps unexpectedly to maximum while driving, and Bluetooth calls appear to remain connected after being ended.
When 2020 GMC Terrain electrical complaints were filed
First complaint Aug 30, 2020, latest Jul 18, 2026.
Electrical System recalls for the 2020 GMC Terrain
No safety recalls on record for this model year.
Electrical System complaints by Terrain model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How many electrical complaints does NHTSA have for the 2020 GMC Terrain?
- NHTSA lists 28 Electrical System complaints for the 2020 Terrain, which is 14% of the 196 total complaints filed for that model year.
- Is there a recall for the 2020 GMC Terrain electrical system?
- No related recall is listed in NHTSA data for this problem area on the 2020 Terrain.
- At what mileage do electrical problems typically show up?
- The median mileage at failure reported to NHTSA for this problem area is 5,600 miles.
- Did the 2020 Terrain's electrical problems cause any crashes or injuries?
- NHTSA data shows 0 crashes and 0 injuries tied to this problem area for the 2020 Terrain, though one complaint involved a fire.
- How does 2020 compare to other Terrain years for electrical complaints?
- The 2020 Terrain's 14% share is lower than the 2019 model's 22% and the 2025 model's 31%, but higher than the 2016 and 2017 models' 12% each.