2021 Chevrolet Blazer Transmission & Powertrain Problems
NHTSA lists 18 Transmission & Powertrain complaints for the 2021 Chevrolet Blazer, 14% of its 133 total complaints, with a median failure mileage of 84,000 miles. No related recalls are listed for this area.
- Transmission & Powertrain complaints
- 18
- 14% of 133
- Crashes reported
- 0
- Fires reported
- 0
- Injuries reported
- 0
- Median mileage
- 84,000 mi
- Related recalls
- 0
Typical transmission symptoms owners report
- Vehicles stall or drop into a neutral-like state while driving, with high RPMs but no forward movement in drive or reverse.
- Owners report sudden loss of power or shifting problems, including jerking and stopping that recurred even after dealer repairs.
- A roaring noise from the engine compartment was traced to metal fragments found inside the transmission fluid.
- Warning messages such as 'Steering Assist is Reduced' and check engine lights appeared alongside stuck-open thermostats and non-functioning temperature gauges.
- Some owners noted intermittent AC failure and a cooling fan that kept running after the engine was shut off.
- One owner described total loss of powertrain power while driving, preceded by a high-pitched wheezing sound at cold start.
When 2021 Chevrolet Blazer transmission complaints were filed
First complaint Dec 2, 2022, latest Jul 21, 2026.
Transmission & Powertrain recalls for the 2021 Chevrolet Blazer
No safety recalls on record for this model year.
Transmission & Powertrain complaints by Blazer model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How common are transmission and powertrain complaints for the 2021 Chevrolet Blazer?
- NHTSA records 18 complaints in this area for the 2021 model year, which is 14% of all 133 complaints filed for that year.
- Is there a recall for 2021 Chevrolet Blazer transmission problems?
- No related recalls are listed in NHTSA data for the Transmission & Powertrain area on the 2021 Blazer.
- At what mileage do 2021 Blazer transmission problems usually show up?
- The median mileage at failure reported to NHTSA for this area is 84,000 miles.
- Have these transmission issues caused crashes or fires?
- NHTSA data for this area on the 2021 Blazer shows 0 crashes, 0 fires, and 0 injuries reported.
- How does 2021 compare to other Blazer years for this problem?
- The 2021 Blazer's 18 complaints and 14% share are lower than the 2019 (64 complaints, 34%) and 2020 (73 complaints, 33%) model years.