2020 Chevrolet Blazer Power Train Problems
Owners have filed 74 complaints with NHTSA about power train problems on the 2020 Chevrolet Blazer, 33% of all complaints for this model year. Half of the reports with a mileage happened before 50,000 miles. The words owners use most often: “shift park” (28% of reports).
- 74power train complaints
- 50,000median miles at failure
- 0mention a crash
- 2mention an injury
- 1related recalls
- 54%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 74 complaints (28%)
- Steering assist reduced: mentioned in 11 of 74 complaints (15%)
At what mileage do power train problems happen?
Based on 16 complaints that reported the odometer reading.
How serious are the reports?
Of 74 complaints, 2 an injury.
Chevrolet Blazer power train complaints by model year
| Model year | Power Train complaints | Share of that year | Median miles |
|---|---|---|---|
| 2024 Blazer | 8 | 16% | 46,831 |
| 2023 Blazer | 10 | 23% | 60,622 |
| 2022 Blazer | 12 | 23% | — |
| 2021 Blazer | 18 | 13% | 84,000 |
| 2020 Blazer | 74 | 33% | 50,000 |
| 2019 Blazer | 64 | 34% | 33,000 |
| 2004 Blazer | 4 | 8% | 69,662 |
| 2003 Blazer | 12 | 16% | 21,000 |
| 2002 Blazer | 33 | 13% | 40,000 |
| 2001 Blazer | 31 | 10% | 56,696 |
| 2000 Blazer | 84 | 14% | 67,000 |
| 1999 Blazer | 54 | 12% | 65,000 |
| 1998 Blazer | 74 | 10% | 67,750 |
| 1997 Blazer | 110 | 14% | 71,000 |
| 1996 Blazer | 96 | 8% | 81,638 |
| 1995 Blazer | 68 | 6% | 66,050 |
When owners reported it
Related recalls (1)
Power train:automatic transmission
Problem: General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. The start/stop accumulator endcap may have missing bolts.
Risk: Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may progress to a loss of propulsion, increasing the risk of a crash. A transmission fluid leak in the presence of an ignition source may increase the risk of fire.
Fix: GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick Customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N202313440.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
The thermostat is malfunctioning along with engine temperature coolant sensor. This causes the temperature gauge on the dashboard to be completely disabled and not moving off cold, it disables the air conditioner, makes the engine cooling fan to run extremely high nonstop, and places the vehicle…
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 car is not sensing that it is in park when it is. When I place it in park and turn the car off it dings and says shift into park however it already is in park. Therefore the car will not turn off. I had to jiggle the shift or turn the car on, reverse then go forward then park to get it to…
Frequently asked questions
Do all 2020 Chevrolet Blazers have power train problems?
No. NHTSA has 74 owner complaints about power train for the 2020 Chevrolet Blazer (33% 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 power train?
Yes: 1 safety recall list power train. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
At what mileage do power train problems start?
The median reported mileage is 50,000 miles: half of the reports with a mileage came before that.
What do owners say about power train problems on the 2020 Chevrolet Blazer?
The most frequent phrase is “shift park”, in 21 of 74 complaints, followed by “steering assist reduced” (11).
Other 2020 Chevrolet Blazer problems
See all 2020 Chevrolet Blazer problems or power train problems across all Blazer years.