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2021 Chevrolet Blazer problems, recalls and owner complaints
What the 2021 Chevrolet Blazer has been recalled for and what owners report, from official government data. Updated October 25, 2026.
- 1safety recall
- 140owner complaints
- 6crash reports
- 1fire report
- 7injuries reported
140 complaints, against an average of 116 for the other 6 Chevrolet Blazer model years.
Every Chevrolet Blazer model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2021 Chevrolet Blazer?
The components named most often in the 140 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
What symptoms do 2021 Chevrolet Blazer owners describe?
Found by reading the text of all 140 owner complaints. Tap a symptom for the answer, a real owner quote and any related recall.
- Why is the check engine light on in my 2021 Chevrolet Blazer?15 owners · 10.7%
- Why does my 2021 Chevrolet Blazer stall, lose power or shut off while driving?11 owners · 7.9%
- Why does my 2021 Chevrolet Blazer overheat?9 owners · 6.4%
- Why do the brakes feel soft, fail or make noise on my 2021 Chevrolet Blazer?8 owners · 5.7%
- Why is the air conditioning not blowing cold in my 2021 Chevrolet Blazer?7 owners · 5%
- Why won't my 2021 Chevrolet Blazer start?5 owners · 3.6%
- Has the 2021 Chevrolet Blazer had engine failures?5 owners · 3.6%
Has the 2021 Chevrolet Blazer been recalled?
1 U.S. safety recall. Repairs are free at a franchised dealer; some are done over the air.
Seat Belts General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.
Risk: If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury.
Fix: GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202322230.
What do 2021 Chevrolet Blazer owners report?
12 of the 140 complaints, the most recent for the most-reported components, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
Torque converters are going out and causing people to need new transmissions. I was told by dealership that evaluated mine this is a known problem! I’ve also encountered others who have same issue with their cars.
My wife and I were just driving and suddenly the motor started stopping installing. We managed to get over toward the curb and shut the motor off and restart it. Then it ran normal. When it did stall out, and we made it to the curb, it shut itself off. That was yesterday then this morning it started to do it a little bit when we left the house.
The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at 35 MPH, a loud cracking sound was heard and there was gray coming from underneath the hood. The contact parked the vehicle. Additionally, the steering wheel failed to turn in the intended direction. Upon opening the hood, the contact noticed gray smoke under the hood. The contact's minor child was occupying the vehicle during the failure. The vehicle was taken to an independent mechanic, where the contact was informed that the AC compressor had melted, requiring replacement of the AC kit and expansion valves…
The main instrument cluster where the speedometer and fuel gauge etc etc reside went blank during operation of the vehicle. I wasn't able to pull over safely until my destination was reached. Restarting the car seemed to "solve" the issue.
The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed and making a turn, the vehicle lost braking functionality. The brake pedal was depressed to the floorboard. After exiting the vehicle, the contact became aware of a fluid leak underneath the vehicle. The "BRAKE Failure" warning light was illuminated. The manufacturer was notified of the failure. The vehicle was taken to a local dealer, where technicians diagnosed a fluid leak from the vacuum pump, causing the brake failure. The contact referenced NHTSA Campaign Number: 19V645000 (Service…
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 don’t recall all blazers just some but I am having the same issue as that special warranty. It’s a safety concern because no oil in the car can blow up the engine .6500 to repair
Vehicle Information: 2021 Chevrolet Blazer 2.5L engine, VIN [XXX]. Odometer 118000 miles.Description of Incident: While operating the vehicle, the mechanical brake vacuum pump experienced a catastrophic internal failure. The drive gear housing shattered violently without warning, shearing off the end of the connecting engine camshaft. Because this was an instantaneous mechanical failure, the vehicles computer did not trigger any dashboard warning lights, check engine lights, or safe mode protocols prior to the failure.Safety Hazards and Component Damage: First, the total destruction of the…
Car will not crank, stalled while cranked, throws code P023F
All 4 tires exhibit signs of dry rot impacting the inner sidewalls of each tire. The outer layer is showing significant signs of sidewall separation. There is no sign of damage visible on the exterior side walls, if an inspection was not done on this date 08/20/26 the driver and others would have been at significant risk of injury or death due to catastrophic failure. The worst separation occurred in the front drive / steering tires. While lesser damage was visible on the rear tire the damage was also significant. The driver side rear showed the least damage with only a 2 inch separation. The…
The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, and the transmission was slipping gears before the vehicle lost motive power. The contact stated that the vehicle failed to drive forward or move while in reverse. The check engine warning light was illuminated. The vehicle was towed to the residence. The contact, who was an independent mechanic, diagnosed the failure as a clutch solenoid failure. The contact stated that the transmission needed to be replaced. The vehicle was not repaired. The contact…
The vehicle showed an error on the dash which stated "Action Required Steering Assist is Reduced Drive with Care" I tool the vehicle to the dealer I purchased it from McClusky Chevy at Kings Auto Mall in Mason Ohio. They informed me that the error code is C0460:58 and GM has a service bulletin 20-NA-215 which advises to replace the Steering Gear due to internal component interference. No one explained to me that this could cause catastrophic failure and lead to a crash before I left the dealership. They could not replace it as they said they do not have the part and it is on national…
Went to park car in a park to drop daughter off and it sputtered out and stalled out of nowhere with no warning. I had received a lamp warning very sporadically prior to this and on occasion that stated 'reduced steering assist drive with care' this resulted in heavy steering for that drive until car was shut off and then it would go away and be fine again, fixed the car through Knudtsen Chevy due to a recall about a month before on the issue with the engine being turned off and it thinking it was still hot and still running the fan (even though the car was not running). Knudtsen fixed that…
2021 Chevrolet Blazer: questions owners ask
Is the 2021 Chevrolet Blazer reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 140 complaints with NHTSA about the 2021 Chevrolet Blazer; the most common categories were engine (42, 30%), electrical system (40, 28.6%), service brakes (20, 14.3%). There is 1 safety recall. 6 complaints mention a crash, 1 mentions a fire, 7 injuries were reported.
What are the most common problems with the 2021 Chevrolet Blazer?
Across 140 owner complaints filed with NHTSA, the categories mentioned most often are engine (30% of complaints), electrical system (28.6% of complaints), service brakes (14.3% of complaints), power train (13.6% of complaints), fuel/propulsion system (12.1% of complaints). One complaint can name several components.
Does the 2021 Chevrolet Blazer have any recalls?
Yes. NHTSA lists 1 recall for the 2021 Chevrolet Blazer; the most recent (campaign 20V811000, 2020-12-23) concerns Seat Belts. Recall repairs are free at a franchised dealer; check your VIN at nhtsa.gov/recalls.
Why is the check engine light on in my 2021 Chevrolet Blazer?
15 of the 140 owner complaints NHTSA has on file for the 2021 Chevrolet Blazer (10.7%) describe the check engine light coming on. One owner wrote: "At 48,000 miles, check engine light came on and loud fan sound continued after turning car off. Took car to dealership where I was informed I needed a new radiator and it is not covered by warranty." (NHTSA complaint 11721657, March 2026). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Why does my 2021 Chevrolet Blazer stall, lose power or shut off while driving?
11 of the 140 owner complaints NHTSA has on file for the 2021 Chevrolet Blazer (7.9%) describe the engine stalling, losing power or shutting off while driving. One owner wrote: "My wife and I were just driving and suddenly the motor started stopping installing. We managed to get over toward the curb and shut the motor off and restart it. Then it ran normal. When it did stall out, and we made it to the curb, it shut itself off." (NHTSA complaint 11771904, October 2026). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Why does my 2021 Chevrolet Blazer overheat?
9 of the 140 owner complaints NHTSA has on file for the 2021 Chevrolet Blazer (6.4%) describe the engine overheating or coolant loss. One owner wrote: "Lost coolant temp so replaced sensor with one from auto zone and worked for one then pegged to cold again fan runs 100% so went and bought another coolant temp sensor from Chevrolet installed that worked two pegged back to cold again fan 100% now going to pay…" (NHTSA complaint 11742425, June 2026). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Why do the brakes feel soft, fail or make noise on my 2021 Chevrolet Blazer?
8 of the 140 owner complaints NHTSA has on file for the 2021 Chevrolet Blazer (5.7%) describe brakes feeling soft, failing, grinding or squealing. One owner wrote: "The vehicle’s brakes failed while I was driving. I was luckily able to steer the vehicle off the road narrowly avoiding hitting another car. We had the vehicle towed to a Chevy dealer and they told us the fault was due to a low voltage battery." (NHTSA complaint 11655932, April 2025). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Why is the air conditioning not blowing cold in my 2021 Chevrolet Blazer?
7 of the 140 owner complaints NHTSA has on file for the 2021 Chevrolet Blazer (5%) describe the air conditioning not cooling or failing. One owner wrote: "Thermostat issues, gives warning steering assist decreased and then eventually check engine light, vehicle thermostat does not react/reach normal temperature, fan continues to blow after car is turned off for 5-15min, AC does not blow cool air or warm if heat…" (NHTSA complaint 11710504, January 2026). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Why won't my 2021 Chevrolet Blazer start?
5 of the 140 owner complaints NHTSA has on file for the 2021 Chevrolet Blazer (3.6%) describe the car failing to start. One owner wrote: "XXX the car had gas, turned over, but would not start. I had it towed to a repair center who towed, did diagnostics and came up with the codes for a bad fuel pump control module. It was replaced and the car starts. There was no warning." (NHTSA complaint 11749347, July 2026). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Has the 2021 Chevrolet Blazer had engine failures?
5 of the 140 owner complaints NHTSA has on file for the 2021 Chevrolet Blazer (3.6%) describe complete engine failure or a replaced engine. One owner wrote: "My 2021 Chevrolet Blazer RS equipped with the 3.6L LGX V6 experienced catastrophic engine failure at approximately 90,200 miles. The vehicle had no prior warning. The dealer diagnosed the timing chain / lift/ cam damage." (NHTSA complaint 11759058, August 2026). If it happens to your car, check your VIN for open recalls at nhtsa.gov/recalls and report the problem to NHTSA; complaints are what trigger investigations.
Check your own Blazer
Counts are a starting point, not a verdict: popular models collect more complaints because more of them are on the road, and NHTSA does not verify individual reports. To see whether a recall is still open on your car, enter your VIN at nhtsa.gov/recalls (U.S.) or your registration at check-vehicle-recalls.service.gov.uk (UK). Had a safety problem? Report it to NHTSA; complaints are what trigger investigations and recalls.
Data: NHTSA Office of Defects Investigation recall and complaint databases (public domain), retrieved October 25, 2026. Model year 2021 only.