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2020 Chevrolet Blazer problems, recalls and owner complaints
What the 2020 Chevrolet Blazer has been recalled for and what owners report, from official government data. Updated October 25, 2026.
- 3safety recalls
- 224owner complaints
- 5crash reports
- 1fire report
- 7injuries reported
The most complained-about Chevrolet Blazer year on file: 224 complaints, against an average of 102 for the other 6 model years.
Every Chevrolet Blazer model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2020 Chevrolet Blazer?
The components named most often in the 224 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
What symptoms do 2020 Chevrolet Blazer owners describe?
Found by reading the text of all 224 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 2020 Chevrolet Blazer?34 owners · 15.2%
- Why is the air conditioning not blowing cold in my 2020 Chevrolet Blazer?21 owners · 9.4%
- Why does my 2020 Chevrolet Blazer overheat?14 owners · 6.3%
- Why does my 2020 Chevrolet Blazer stall, lose power or shut off while driving?10 owners · 4.5%
Has the 2020 Chevrolet Blazer been recalled?
3 U.S. safety recalls. Repairs are free at a franchised dealer; some are done over the air.
Tires 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 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.
Air Bags: Side/Window: Curtain: Inflator 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.
What do 2020 Chevrolet Blazer owners report?
12 of the 224 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.
Warning on console “Steering Assist is Reduced Drive with Care” 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
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…
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 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…
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.
Power steering went out while driving making it impossible to steer.
This happened back in May and the dealership couldn’t 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. It’s very dangerous and frustrating.
Last year I was heading to heading to [XXX] in XXX when I pushed on the brakes on my 2020 Chevy blazer my brakes were working but the steering wheel was shaking weird like I was hard on the brakes but I was tapping them slowly earlier this year right before I had transmission flush at fox Chevy in Caledonia I noticed before two weeks of bringing it in I was near a traffic light slowing down it went hard shift down and when I was not moving in notice it jerked forward when at idle and the light like it was rear ended I feel like this is a safety concern of that happening after the transmission…
I was driving and steering reduced drive with caution notification and brake assist notification came on and then engine light and the temp gage went to cold and stayed there. My steering stiffened up making it hard to steer. This is a known problem with the Chevy blazers and it had to do with the thermostat needing replaced.
The contact owns a 2020 Chevrolet Blazer. The contact stated that while driving approximately 70 MPH, the message, "Steering Assist Reduced - Drive Carefully” was displayed. The contact stated that the A/C shut off and the windshield defroster failed after the message was displayed. The vehicle was taken to the dealer, and the contact was informed that the repair was not covered. The manufacturer was informed of the failure and confirmed that the vehicle was not included in the “Special Coverage" for the repair. The contact was referred to the NHTSA Hotline to report the failure. The failure…
My car will be running fine but the lights on the AC panel wont work. My car will stop and shut down while driving. Ive taken it in for service and they told me my battery cabels were lose. The second time it happened I got a notification of low battery level and it shut off and will not start. I just replace the battery 2 years ago. The service department tested my battery and said it was fine
Very bad clunnk on driver side when hitting any bump on the road and it's loud.dealer ship sold me the car like that . Electrical issue gauge cluster radio cluster turn signals your first camera anything that works off the instrument cluster of the radio TV screen goes off while I'm driving comes back on hit a bump it comes back on no headlights driving at night time. The dealership sold me the car like this.
2020 Chevrolet Blazer: questions owners ask
Is the 2020 Chevrolet Blazer reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 224 complaints with NHTSA about the 2020 Chevrolet Blazer; the most common categories were electrical system (78, 34.8%), power train (75, 33.5%), engine (71, 31.7%). There are 3 safety recalls. 5 complaints mention a crash, 1 mentions a fire, 7 injuries were reported.
What are the most common problems with the 2020 Chevrolet Blazer?
Across 224 owner complaints filed with NHTSA, the categories mentioned most often are electrical system (34.8% of complaints), power train (33.5% of complaints), engine (31.7% of complaints), steering (19.2% of complaints), service brakes (4.9% of complaints). One complaint can name several components.
Does the 2020 Chevrolet Blazer have any recalls?
Yes. NHTSA lists 3 recalls for the 2020 Chevrolet Blazer; the most recent (campaign 21V115000, 2021-02-25) concerns Tires. Recall repairs are free at a franchised dealer; check your VIN at nhtsa.gov/recalls.
Why is the check engine light on in my 2020 Chevrolet Blazer?
34 of the 224 owner complaints NHTSA has on file for the 2020 Chevrolet Blazer (15.2%) describe the check engine light coming on. One owner wrote: "The check engine light came on with a warning that said "Steering assist reduced drive with care". The temperature gauge went to cold and the air condition quit working." (NHTSA complaint 11736372, May 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 is the air conditioning not blowing cold in my 2020 Chevrolet Blazer?
21 of the 224 owner complaints NHTSA has on file for the 2020 Chevrolet Blazer (9.4%) describe the air conditioning not cooling or failing. One owner wrote: "This is what came up on my screen.Steering wheel assist reduced.Drive with care. My hot and cold gauge drop to C and stayed there for about 4 days and my a/c was blowing out hot air. I was told a lot of these Suvs have done this." (NHTSA complaint 11741925, 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 does my 2020 Chevrolet Blazer overheat?
14 of the 224 owner complaints NHTSA has on file for the 2020 Chevrolet Blazer (6.3%) describe the engine overheating or coolant loss. One owner wrote: "Car is overheating with multiple engine codes. Unable to drive. Car power is reduced and shortly after will start overheating." (NHTSA complaint 11738394, May 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 2020 Chevrolet Blazer stall, lose power or shut off while driving?
10 of the 224 owner complaints NHTSA has on file for the 2020 Chevrolet Blazer (4.5%) describe the engine stalling, losing power or shutting off while driving. One owner wrote: "My car will be running fine but the lights on the AC panel wont work. My car will stop and shut down while driving. Ive taken it in for service and they told me my battery cabels were lose." (NHTSA complaint 11735381, May 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 2020 only.