2020 Chevrolet Blazer Electrical System Problems
Owners have filed 76 complaints with NHTSA about electrical system problems on the 2020 Chevrolet Blazer, 34% of all complaints for this model year. Half of the reports with a mileage happened before 38,000 miles. The words owners use most often: “shift park” (28% of reports).
- 76electrical system complaints
- 38,000median miles at failure
- 0mention a crash
- 0mention an injury
- 0related recalls
- 38%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Shift park: mentioned in 21 of 76 complaints (28%)
- Assist reduced: mentioned in 19 of 76 complaints (25%)
- Temperature gauge: mentioned in 8 of 76 complaints (11%)
- Sensor thermostat: mentioned in 5 of 76 complaints (7%)
At what mileage do electrical system problems happen?
Based on 9 complaints that reported the odometer reading.
How serious are the reports?
None of the 76 complaints report a crash, fire or injury.
Chevrolet Blazer electrical system complaints by model year
| Model year | Electrical System complaints | Share of that year | Median miles |
|---|---|---|---|
| 2025 Blazer | 10 | 30% | — |
| 2024 Blazer | 7 | 14% | 22,000 |
| 2023 Blazer | 7 | 16% | 57,705 |
| 2022 Blazer | 19 | 36% | 47,500 |
| 2021 Blazer | 39 | 28% | 38,000 |
| 2020 Blazer | 76 | 34% | 38,000 |
| 2019 Blazer | 60 | 32% | 33,000 |
| 2008 Blazer | 1 | 20% | 115,000 |
| 2006 Blazer | 2 | 11% | 114,282 |
| 2005 Blazer | 4 | 27% | 75,000 |
| 2004 Blazer | 10 | 20% | 24,000 |
| 2003 Blazer | 9 | 12% | 48,774 |
| 2002 Blazer | 21 | 9% | 36,064 |
| 2001 Blazer | 40 | 12% | 60,000 |
| 2000 Blazer | 49 | 8% | 89,366 |
| 1999 Blazer | 40 | 9% | 89,000 |
| 1998 Blazer | 71 | 10% | 71,000 |
| 1997 Blazer | 89 | 12% | 87,700 |
| 1996 Blazer | 62 | 5% | 104,000 |
| 1995 Blazer | 70 | 6% | 161,228 |
When owners reported it
Related recalls (0)
No safety recall lists electrical system for the 2020 Chevrolet Blazer. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
This happened back in May and the dealership couldnât find anything wrong and it happened again today. I am driving and the car will shut off. A message pops up saying shift to neutral and press start again. Itâs very dangerous and frustrating.
The contact owns a 2020 Chevrolet Blazer. The contact stated that while starting the vehicle, the brake pedal became inoperable. There was no warning light illuminated. The contact stated that excessive force was needed to depress the brake pedal to engage the START/STOP function to start the…
Vehicle: 2020 Chevrolet Blazer V6 System: Electronic Transmission Range Select (ETRS) â Gear Shifter / Park Engagement Concern Type: Potential Unintended Vehicle Motion / Failure to Confirm Park State Description of the Issue On the 2020 Chevrolet Blazer V6, the Electronic Transmission Range…
Frequently asked questions
Do all 2020 Chevrolet Blazers have electrical system problems?
No. NHTSA has 76 owner complaints about electrical system for the 2020 Chevrolet Blazer (34% of the 221 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2020 Chevrolet Blazer electrical system?
No recall currently lists electrical system for this vehicle.
At what mileage do electrical system problems start?
The median reported mileage is 38,000 miles: half of the reports with a mileage came before that.
What do owners say about electrical system problems on the 2020 Chevrolet Blazer?
The most frequent phrase is “shift park”, in 21 of 76 complaints, followed by “assist reduced” (19).
Other 2020 Chevrolet Blazer problems
- Power Train problems (74)
- Engine problems (70)
See all 2020 Chevrolet Blazer problems or electrical system problems across all Blazer years.