RoadVitals

2020 Chevrolet Blazer

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
219
+6 complaints in 30 days
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
3
Latest Feb 25, 2021
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
5
7 injuries, 0 deaths reported

Overview

Our database contains 219 NHTSA owner-reported complaints for the 2020 Chevrolet Blazer, most frequently naming the electrical, powertrain (other) and engine categories. 3 safety recalls have been issued covering this model year; and 854 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

3 campaigns cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
21V115000

TIRES

Feb 25, 2021
33,838 units potentially affected
The defect: 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.
The 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 remedy: 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, LLCManufacturer number N212329050View on NHTSA.gov
20V668000

POWER TRAIN:AUTOMATIC TRANSMISSION

Oct 29, 2020
194,105 units potentially affected
The defect: 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.
The 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 remedy: 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 LLCManufacturer number N202313440View on NHTSA.gov
20V446000

AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR

Jul 30, 2020
769 units potentially affected
The defect: 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.
The risk: If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.
The remedy: 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 LLCManufacturer number N202305380View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

View all 219
Steering
Filed Sep 21, 2026

Power steering went out while driving making it impossible to steer.

NHTSA ID
11765762
Incident
Sep 20, 2026
ElectricalPowertrain (other)
Filed Sep 19, 2026

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.

NHTSA ID
11765573
Incident
Sep 19, 2026
Electrical
Filed Sep 14, 2026

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.

NHTSA ID
11764039
Incident
Sep 14, 2026
Engine
Filed Sep 14, 2026

The contact owns a 2020 Chevrolet Blazer. The contact stated that while operating the vehicle, the check engine warning light intermittently illuminated, and the vehicle hesitated while accelerating. The vehicle was taken to the local dealer to be diagnosed, and the contact was informed that the catalytic converter needed to be replaced. The vehicle was not yet repaired. Additionally, while operating the vehicle, the engine temperature rose to HOT. The vehicle was taken to the local dealer, and the thermostat was replaced. The manufacturer was notified of the failure. The failure mileage was 119,000.

NHTSA ID
11764034
Incident
Sep 3, 2026
Mileage
119,000 mi
Filed Sep 11, 2026

The screen displayed shift to park. The car wouldn’t not recognize it was in park. Had to hit the shifter to get the car to recognize it was in park or it wouldn’t let you turn the car off. There was nothing other than the warning on the screen when we went to get gas and needed to turn the car off. It hasn’t been inspected by any of for this issue. I’m just afraid one day the car may roll if it doesn’t recognize it’s in park.

NHTSA ID
11763580
Incident
Sep 4, 2026
Electrical
Filed Sep 10, 2026

Vehicle: 2020 Chevrolet Blazer V6 System: Electronic Transmission Range Select (ETRS) – Gear Shifter / Park Engagement Concern Type: Potential Unintended Vehicle Motion / Failure to Confirm Park State Description of the Issue On the 2020 Chevrolet Blazer V6, the Electronic Transmission Range Select (ETRS) system fails to confirm that the transmission is in Park, even when the physical gear shifter lever is placed in the Park position. As a result The dashboard displays a "SHIFT TO PARK" warning message in the Driver Information Center (DIC). The vehicle continues to beep after the ignition is turned off. The vehicle does not fully power down, remaining in accessory/ON mode because the ETRS system has not received a valid Park confirmation signal from the shifter position sensor. This issue presents a potential Unintended Vehicle Motion (UVM) hazard for the following reasons: 1. Vehicle May Not Be Secured in Park The "SHIFT TO PARK" message indicates the ETRS system does not confirm the transmission is in the Park state. If the park pawl has not fully engaged — even though the shifter appears to be in Park — the vehicle is not mechanically secured. On any inclined surface, this creates a risk of the vehicle rolling away, potentially injuring the driver, bystanders, or causing property damage. 2. Driver May Exit Vehicle Believing It Is Secured The persistent beeping and DIC warning are intended to alert the driver that the vehicle is not in Park. However, customers may not understand the warning, may dismiss it, or may exit the vehicle assuming the shifter position is sufficient. This is a known human factors risk — the driver's perception of being in Park does not match the system's inability to confirm Park engagement. Vehicle Cannot Be Powered Off Normally: When the system cannot confirm Park, the vehicle remains in an active power state. This means the vehicle's propulsion system is not fully disabled, increasing the risk of unintended movement if the driver exit

NHTSA ID
11763452
Incident
Sep 10, 2026
Electrical
Filed Aug 27, 2026

Car is in park but the car alerts that it is not in park ( causing radio and light s to stay on ) - happens continually and from what I have heard from other people and mechanics - this is a known issue with Chevy

NHTSA ID
11759904
Incident
Aug 27, 2026
ElectricalPowertrain (other)
Filed Aug 22, 2026

The car is not sensing that it is in park when it is. When I place it in park and turn the car off it dings and says shift into park however it already is in park. Therefore the car will not turn off. I had to jiggle the shift or turn the car on, reverse then go forward then park to get it to register. This has taken up to 10 minutes and it’s getting worse. This is a known issue that is referenced in GM Technical Service Bulletin 19-NA-206.

NHTSA ID
11758760
Incident
Jul 30, 2026

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

PIP4902W

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

PIT5099J

PI to help diagnose A/C concern

PIT3271Q

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

PIP6104

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

PIP4902V

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

PIT6425D

This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Chevrolet Blazer by model year
YearComplaintsRecallsInvestigationsIssue Index
2026100—
2025321052.6
2024481161.0
2023432059.0
2022501055.1
20211331050.5
2020Viewing2193058.4
20191862050.5
2009000—
2008500—
2007900—
2006190040.5
2005150037.9
2004501039.7
2003771044.3
20022462152.1
20013263259.2
20005894359.3
19994360144.1
19987163155.9
19977687261.7
19961,15311767.5
19951,22411867.5
19946207669.7
19935117570.0
19922786571.0
19912227870.4
1990324670.2
1989384570.5
1988404161.2
1987303362.5
1986192263.0
1985292264.4
1984933—
1983443—
1982130—
1981130—
1980110—
1979110—
1978110—
1977210—
1976110—
1975010—
1974020—
1973110—
1972010—
1969010—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.