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.
The fix and full notice
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.
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.
NHTSA listing: BLAZER. Chevrolet campaign N212329050.
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.
The fix and full notice
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.
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.
NHTSA listing: BLAZER. Chevrolet campaign N202313440.
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.
The fix and full notice
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.
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.
NHTSA listing: BLAZER. Chevrolet campaign N202305380.
Questions about any of these recalls: call NHTSA's Vehicle Safety Hotline at 888-327-4236 (TTY 888-275-9171) or check your VIN at nhtsa.gov/recalls.
NHTSA investigations
NHTSA's investigations file, dated Nov 12, 2026, lists no investigations for the 2020 Chevrolet Blazer.
What owners report
Owners have filed 224 complaints with NHTSA about the 2020 Blazer. Below, they are sorted by the problems owners describe and by the areas NHTSA files them under. NHTSA does not verify complaints.
Median 50,000 miles at failure, from 16 reports with mileage
Engine71 · 32%
Steering43 · 19%
Brakes11 · 5%
Lane departure systems5 · 2%
Fuel and propulsion system4 · 2%
Unknown or other57 · 25%
A complaint can name more than one area, so shares add up to more than 100%. Mileage is shown where at least 15 owners reported it.
Chevrolet Blazer recalls and complaints by model year
The highlighted bars are the 2020 model year. Newer model years have had less time on the road, so their counts are lower. Counting complaints filed in each model year's first three years, the 2023 Blazer drew the most (28) and the 2020 drew 18.
Owner complaints
2020: 224 complaintsTap or drag across the chart for other years.
Show as a table
Owner complaints by model year, Chevrolet Blazer
Model year
Complaints
2019
191
2020
224
2021
142
2022
55
2023
44
2024
57
2025
35
2026
1
Safety recalls
2020: 3 recallsTap or drag across the chart for other years.
Show as a table
Safety recalls by model year, Chevrolet Blazer
Model year
Recalls
2019
2
2020
3
2021
1
2022
1
2023
2
2024
1
2025
1
2026
0
Crash test ratings
NHTSA's 5-Star Safety Ratings for each version it tested. Rollover risk is NHTSA's estimate of the chance of rolling over in a single-vehicle crash.
In the 224 owner complaints filed with NHTSA for the 2020 Chevrolet Blazer, the problems described most are shifter errors or getting stuck in gear (50), the check engine light coming on (37), and air conditioning or heater failures (25). NHTSA does not verify complaints, and one complaint can describe several problems.
Is the 2020 Chevrolet Blazer safe?
In NHTSA crash tests every tested version of the 2020 Chevrolet Blazer earns 5 stars overall. The table above lists each tested version.
Is NHTSA investigating the 2020 Chevrolet Blazer?
No. NHTSA's investigations file, dated Nov 12, 2026, lists no investigations for the 2020 Chevrolet Blazer.
How do I check if my Blazer has an open recall?
Enter the 17-character VIN from your dashboard, door jamb or registration at nhtsa.gov/recalls. The lookup lists unrepaired recalls for that exact vehicle. Safety recall repairs are free at Chevrolet dealers.
Sources and method
NHTSA recalls file (NHTSA datasets), dated Nov 12, 2026; every campaign checked against NHTSA's recalls API.
NHTSA owner complaints file, dated Nov 11, 2026. Counted by complaint number, so a complaint naming three components counts once in the total.
NHTSA investigations file, dated Nov 12, 2026. Defect petitions, which ask NHTSA to open an investigation, are listed apart and only while open. Audit queries, which check whether a company met its recall and reporting duties rather than whether a vehicle has a problem, are not listed.
NHTSA 5-Star Safety Ratings (NCAP).
NHTSA model names covered: BLAZER.
Complaint counts are unverified owner reports. They rise with sales volume and time on the road, so compare model years with care. How we build these pages. Spotted an error? Tell us.