Engine complaints and recalls from NHTSA
Summary
The 2020 Chevrolet Blazer has 33 NHTSA engine complaints and 0 engine-related recalls.
33
Complaints
0
Recalls
0
Injuries Reported
Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated October 11, 2026
| Date ↓ | Component | Summary |
|---|---|---|
| Sep 3, 2026 | ENGINE AND ENGINE COOLING | The contact owns a 2020 Chevrolet Blazer. The contact stated that while operating the vehicle, the c... |
| Jul 10, 2026 | ENGINE | The radiator and thermostat on my 2020 Blazer had to be replaced at less than 35,000 miles. It was ... |
| May 29, 2026 | ENGINE,FORWARD COLLISION AVOIDANCE | Engine temp gauge bottoms out because the thermostat is stuck open, causing the air to stop working.... |
| May 1, 2026 | ENGINE | Thermostat stuck open radiator broke. Told by 4 GM Dealerships, this is a very common problem in ... |
| Apr 28, 2026 | ENGINE | Car is overheating with multiple engine codes. Unable to drive. Car power is reduced and shortly aft... |
| Jan 14, 2026 | ENGINE | I bought this car brand new. 0 miles. I’ve had an oil leak fixed once in it. And now it’s leaking oi... |
| Dec 4, 2025 | ENGINE | 2020 Blazer, 65,000 miles. Temp stuck on cold, A/C blows warm aor and driving assistance off. The ra... |
| Dec 1, 2025 | ENGINE | Thermostat/thermostat sensor and complete water outlet system replacement at only 52,377 miles. The... |
| Oct 6, 2025 | ENGINE | The thermostat failed on a trip locking in 0 temperature reading and steering assist warning. Licen... |
| Oct 5, 2025 | ENGINE | Engine light on, power steering assist, air conditioning stop working diagnostic tool read p0128 coo... |
| Aug 21, 2025 | ENGINE | P0128 code for thermostat issue. Fans run after shutting car off. Steering assist reduced message. C... |
| Aug 20, 2025 | ENGINE | 2020 Chevrolet Blazer, 19900 miles, lightly driven The radiator seam is leaking coolant, which appea... |
| May 16, 2025 | ENGINE | I have an oil leak and now they are saying both of my camshaft housing gaskets are leaking it's goin... |
| May 7, 2025 | ENGINE,LANE DEPARTURE | Ongoing Engine and Steering Sensor Issues – 2020 Chevrolet Blazer I am filing a complaint regarding... |
| May 1, 2025 | ENGINE | The thermostat has failed, causing hot air to blow into the car. This is a known and common issue w... |
| Apr 30, 2025 | ENGINE | Failure of either coolant temperature sensor or thermostat or both. The A/C is disabled, the tempera... |
| Apr 28, 2025 | ENGINE AND ENGINE COOLING | The contact owns a 2020 Chevrolet Blazer. The contact stated while driving at approximately 55 MPH a... |
| Apr 19, 2025 | ENGINE | Engine fan stuck on high, air conditioner does not work, temperature gauge stuck on cold, driving as... |
| Mar 24, 2025 | ENGINE | I purchased this vehicle in March, 2025 from a used dealer. When I got it, I noticed the vehicle w... |
| Mar 12, 2025 | ENGINE | I have had to replace the radiator 3 times since I've owned this vehicle. I see where there are oth... |