Chevrolet Blazer Engine Problems
Owners have filed 201 complaints with NHTSA about engine problems on the Chevrolet Blazer across 14 model years. The 2020 model year has the most (70). The words owners use most often: “assist reduced” (19% of reports).
- 201engine complaints
- —median miles at failure
- 3mention a crash
- 1mention an injury
- 1related recalls
- $1,300typical repair cost reported by owners
- 39%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.
- Assist reduced: mentioned in 38 of 201 complaints (19%)
- Temperature gauge: mentioned in 19 of 201 complaints (9%)
- Air conditioning: mentioned in 11 of 201 complaints (5%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical engine repair on the Chevrolet Blazer at $1,300, and half of them between $950 and $2,450.
Based on 8 NHTSA complaints about this problem alone that state a repair bill or quote (2024–2026), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do engine problems happen?
Based on 23 complaints that reported the odometer reading.
How serious are the reports?
Of 201 complaints, 3 mention a crash, 3 a fire, 1 an injury.
Chevrolet Blazer engine complaints by model year
| Model year | Engine complaints | Share of that year | Median miles |
|---|---|---|---|
| 2025 Blazer | 3 | 9% | — |
| 2024 Blazer | 7 | 14% | — |
| 2023 Blazer | 12 | 28% | 53,550 |
| 2022 Blazer | 14 | 26% | 121,000 |
| 2021 Blazer | 42 | 31% | 32,000 |
| 2020 Blazer | 70 | 32% | 15,000 |
| 2019 Blazer | 40 | 21% | 1,905 |
| 2006 Blazer | 2 | 11% | 109,000 |
| 2002 Blazer | 3 | 1% | 145,000 |
| 2000 Blazer | 1 | 0% | 143,118 |
| 1999 Blazer | 2 | 0% | 135,284 |
| 1998 Blazer | 2 | 0% | 140,000 |
| 1996 Blazer | 1 | 0% | 147,000 |
| 1995 Blazer | 2 | 0% | 188,684 |
When owners reported it
Related recalls (1)
Engine and engine cooling:cooling system:fan
Model years: 1995
Problem: Fan blade rivet breakage can occur causing the fan blade to separate from the spider.
Risk: If this occurred while the hood was open, a person working under the hood of the vehicle or in the vicinity of the vehicle could be struck by the fan blade and injured.
Fix: Dealers will inspect and replace, if necessary, the fan with a newer fan having thicker-headed rivets.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
I had no warning or indication whatsoever that my battery was going bad. I was at a major red light and my car shut down, then started back on its on with the entire panel lite up. The light changed and when I tried to turn I had hardly any stirring and almost no brakes. I almost ran into the car…
the car jumped/jerked like it was trying to change gears while accelerating and two times when at a complete stop at a light. The car was taken to dealership on Sep 2, 2025 and needed a full transmission replacement. The parts were on back order and the vehicle was not complete until November 20th…
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…
The radiator and thermostat on my 2020 Blazer had to be replaced at less than 35,000 miles. It was out of warranty and the Chevy dealer charged me $3,500 to replace them. Internet sources state that this is a common problem with this car. I complained to Chevy corporate and they refunded $1,000. I…
My 2021 Chevy blazer is leaking oil at 70,000 miles Chevy only recalled under special warranty for camshaft carrier it appears Chevy put in a glue for them seals that comes off unfortunately they donât recall all blazers just some but I am having the same issue as that special warranty. Itâs a…
Frequently asked questions
Do all Chevrolet Blazers have engine problems?
No. NHTSA has 201 owner complaints about engine for the Chevrolet Blazer. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Chevrolet Blazer engine?
Yes: 1 safety recall list engine. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
How much does it cost to fix engine problems on the Chevrolet Blazer?
Owners report a typical cost of $1,300 (half paid between $950 and $2,450), from 8 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about engine problems on the Chevrolet Blazer?
The most frequent phrase is “assist reduced”, in 38 of 201 complaints, followed by “temperature gauge” (19).
Other Chevrolet Blazer problems
See all Chevrolet Blazer problems.