The 2020 Chevrolet Blazer has 3 safety recalls and 224 owner complaints on file with NHTSA. The most-reported problem area is electrical system (78 complaints).
Recalls3safety recalls
Complaints224filed by owners
Crashes · fires5 · 1reported in complaints
Injuries · deaths7 · 0reported in complaints
2020 Chevrolet Blazer in an NHTSA crash test
Safety recalls
Tires
NHTSA recall 21V115000 · Feb 25, 2021 · 33,838 vehicles
Problem: General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for various model year 2018-2021 vehicles. The affected tires were cured for too long during production.
Risk: Over cured tires may develop a break in the sidewall resulting in sudden air loss or a belt edge separation which could lead to a tread/belt loss. Either condition can cause a loss of vehicle control, increasing the risk of a crash.
Fix: GM will notify owners, and dealers will inspect the tires, replacing them as necessary, free of charge. The recall began March 22, 2021. 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 N212329050.
Power train › Automatic transmission
NHTSA recall 20V668000 · Oct 29, 2020 · 194,105 vehicles
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.
Problem: General Motors, LLC. (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5 and XT6, Chevrolet Blazer, Silverado 1500, 2500 and 3500 and Traverse and GMC Acadia and Sierra 1500, 2500 and 3500 vehicles. The diffuser component of the Roof-Rail Air Bag (RRAB) inflator may not have been properly crimped to the inflator and could separate from the inflator during air bag deployment.
Risk: If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.
Fix: GM will notify owners, and dealers will replace the suspect RRAB modules, free of charge. The recall began September 3, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-333-4223, or Buick customer service at 1-800-521-7300. GM's number for this recall is N202305380.
Recall repairs are free at any authorised dealer. A recall listed here may already have been fixed on a particular car: enter its 17-character VIN at nhtsa.gov/recalls to see open recalls.
Crash test ratings
NHTSA side barrier crash testNHTSA side pole crash test
2020 Chevrolet Blazer SUV AWD
Overall
★★★★★
Frontal crash
★★★★★
Side crash
★★★★★
Rollover
★★★★★
Rollover risk
14.7%
Forward collision warning: Optional · Lane departure warning: Optional
2020 Chevrolet Blazer SUV FWD
Overall
★★★★★
Frontal crash
★★★★★
Side crash
★★★★★
Rollover
★★★★★
Rollover risk
15.5%
Forward collision warning: Optional · Lane departure warning: Optional
NHTSA 5-Star Safety Ratings (New Car Assessment Program). Ratings are comparable only between vehicles of similar size and weight, and ratings from 2011 on use tougher tests than earlier years. Photos: NHTSA.
Fuel economy
Blazer FWD
24mpg combined
City / highway
21 / 28 mpg
Fuel
Regular Gasoline
2 L · 4 cyl · Automatic 9-spd · Front-Wheel Drive · about $2,800/year to fuel
Blazer FWD
23mpg combined
City / highway
21 / 27 mpg
Fuel
Regular Gasoline
2.5 L · 4 cyl · Automatic 9-spd · Front-Wheel Drive · about $2,900/year to fuel
Blazer AWD
23mpg combined
City / highway
21 / 27 mpg
Fuel
Regular Gasoline
2 L · 4 cyl · Automatic 9-spd · All-Wheel Drive · about $2,900/year to fuel
Blazer FWD
21mpg combined
City / highway
19 / 26 mpg
Fuel
Regular Gasoline
3.6 L · 6 cyl · Automatic 9-spd · Front-Wheel Drive · about $3,200/year to fuel
Blazer AWD
21mpg combined
City / highway
18 / 25 mpg
Fuel
Regular Gasoline
3.6 L · 6 cyl · Automatic 9-spd · All-Wheel Drive · about $3,200/year to fuel
EPA estimates from fueleconomy.gov for each engine and transmission sold. Annual cost is the EPA's estimate for 15,000 miles a year at its current fuel and electricity price assumptions. Your results will vary.
What owners report
Problem area
Complaints
Crashes
Fires
Injuries
Typical mileage*
Electrical system
78
0
1
0
38,000 mi
Power train Automatic transmission
75
0
0
2
50,000 mi
Engine
71
1
0
2
15,000 mi
Unknown or other
57
1
0
2
—
Steering
43
0
0
0
8,665 mi
Service brakes
10
1
0
1
—
Lane departure Assist; Blind spot detection
5
0
0
0
—
Suspension
4
1
0
1
—
Vehicle speed control
4
0
0
0
—
Fuel/propulsion system
4
1
0
2
—
Wheels
3
1
0
1
—
Tires
3
0
0
0
—
*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Recent owner complaints
Oct 20, 2026Power train 2020 Chevy Blazer LT 3.6 L V6 I'm filing this complaint regarding multiple concerning mechanical and safety related issues with my 2020 Chevy Blazer LT that I purchased brand new and currently have 54,224 miles . Without warning, My vehicle developed several problems simultaneously. The check engine light came on, The engine cooling fan started running continuously at high speed, the AC stopped blowing cold air and is warm air, the steering assist reduced came on and my chevy app notified me that I have an engine cooling system malfunction and to service now. It's showing a P0128 code when I had it checked. After doing some research, I discovered GM issued a thermostat special coverage…
Oct 21, 2026Electrical system Warning on console âSteering Assist is Reduced Drive with Careâ and radiator fan turns on right away at full speed.. this has been reported in similar models and years.. but does not include this particular vehicle year and VIN
Jan 21, 2026 · fireElectrical system My 2020 Chevrolet Blazer experienced severe mechanical problems, including stuttering, loss of power, and the engine shutting off unexpectedly while I was driving. The vehicle subsequently would not operate normally. On February 25, 2026, Rick Hendrick Chevrolet Duluth performed a diagnostic inspection and recommended nearly $20,000 in repairs, including transmission-related repairs. However, the dealership did not identify or disclose any alternator fire damage or related electrical safety concerns. In October 2026, an independent mechanic discovered significant burn damage on the alternator. The damage was visible externally, and further inspection of the alternatorâs interior revealed…
Sep 15, 2026Engine 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 into an unpredictable limp mode or fail safe mode. This was identified as faulty by GM and they have issued a special service bulletin that they will repair it up to a 150,000 miles or 15 years or reimburse customers up to $1200 on 2021 models. The 2020 models use the same engine and parts but they refuse to include them which is an unfair exclusion since they admitted to a faulty part. 2020 should…
Jul 10, 2026Engine 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 do not feel this was a fair settlement due to the fact that it is a common problem.
Sep 20, 2026Steering Power steering went out while driving making it impossible to steer.
Sep 19, 2026Electrical system 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.
Sep 14, 2026Electrical system The contact owns a 2020 Chevrolet Blazer. The contact stated that while starting the vehicle, the brake pedal became inoperable. There was no warning light illuminated. The contact stated that excessive force was needed to depress the brake pedal to engage the START/STOP function to start the vehicle. The dealer was not contacted. The manufacturer was made aware of the failure by telephone.
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
