2020 Chevrolet Blazer Safety Report
2020 Chevrolet Blazer Safety Report
Safety Decision Cockpit for the 2020 Chevrolet Blazer
This page is the hub for deciding what to inspect next on the 2020 Chevrolet Blazer. It connects recall campaigns, owner complaint patterns, service bulletins, sibling model years, component issue hubs, and the model buying guide so a shopper or owner can move from a single report into the wider safety graph.
| Signal | Value | What to inspect next |
|---|---|---|
| Recall burden | High (3) | Review campaign numbers, affected components, and dealer remedies below. |
| Owner complaints | High (182) | Scan complaint narratives for recurring symptoms, mileage, crashes, fires, injuries, and dates. |
| Crash and fire reports | 5 | Treat any crash, fire, injury, or fatality-linked pattern as a priority pre-purchase inspection item. |
| Primary component hub | Power Train | Compare power train issues across vehicles. |
| Cleaner nearby model year | 2025 | Compare against the 2025 Chevrolet Blazer with 20 complaints and 1 recalls. |
| Riskier nearby model year | 2019 | Check the 2019 Chevrolet Blazer before buying across this generation. |
Chevrolet Blazer Year-by-Year Comparison
The safest purchase decision usually comes from comparing neighboring model years, not reading a single page in isolation. The table below uses only validated Chevrolet Blazer years already present in the cleaned NHTSA dataset, so each comparison links to a real vehicle safety report rather than a generated combination.
| Model Year | Complaints | Recalls | Use case |
|---|---|---|---|
| 2021 Chevrolet Blazer | 109 | 1 | Compare as a potentially cleaner alternative. |
| 2019 Chevrolet Blazer | 174 | 2 | Compare as a potentially cleaner alternative. |
| 2022 Chevrolet Blazer | 34 | 1 | Compare as a potentially cleaner alternative. |
| 2023 Chevrolet Blazer | 31 | 2 | Compare as a potentially cleaner alternative. |
| 2024 Chevrolet Blazer | 32 | 1 | Compare as a potentially cleaner alternative. |
| 2025 Chevrolet Blazer | 20 | 1 | Compare as a potentially cleaner alternative. |
2020 Chevrolet Blazer Complaint Theme Map
Complaint counts become more useful when they are grouped into inspection themes. For the 2020 Chevrolet Blazer, these are the component areas with the clearest NHTSA complaint signals. Use each link to jump from this single vehicle into broader component hubs and make-specific issue pages.
Power Train
28 owner complaints mention this component in the current safety profile.
All Power Train issues Chevrolet onlyUnknown Or Other
27 owner complaints mention this component in the current safety profile.
All Unknown Or Other issues Chevrolet onlyEngine
24 owner complaints mention this component in the current safety profile.
All Engine issues Chevrolet onlyElectrical System
15 owner complaints mention this component in the current safety profile.
All Electrical System issues Chevrolet onlyPower Train,Electrical System
10 owner complaints mention this component in the current safety profile.
All Power Train,Electrical System issues Chevrolet onlyPower Train,Electrical System,Engine
4 owner complaints mention this component in the current safety profile.
All Power Train,Electrical System,Engine issues Chevrolet onlyAI Safety Analysis for the 2020 Chevrolet Blazer
Reliability Score
The 2020 Chevrolet Blazer receives a reliability score of 5 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates below-average reliability. Significant issues have been reported by owners and should be carefully evaluated before purchase.
NHTSA Safety Ratings for the 2020 Chevrolet Blazer
The National Highway Traffic Safety Administration (NHTSA) evaluates vehicles through controlled crash tests and assigns star ratings from 1 to 5, with 5 being the safest.
Known Issues for the 2020 Chevrolet Blazer
The following issues have been identified from NHTSA complaint data and owner reports for the 2020 Chevrolet Blazer:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Automatic Transmission Recall General Motors is recalling certain 2018-2020 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Blazer for potential automatic transmission issues. |
Medium | Common | 30k-60k miles |
| Check Engine Light And Steering Assist Frequent reports of check engine light and reduced steering assist, indicating electrical system and power train issues. |
High | Common | 0-100k miles |
| Thermostat And Coolant Sensor Failure Issues with the thermostat and coolant sensor have been reported, causing engine temperature problems and warning lights. |
Medium | Common | 0-100k miles |
| Tire Recall Recalls for tires on 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, and Blazer due to potential safety issues. |
Medium | Common | 0-100k miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2020 Chevrolet Blazer:
28% of reported issues are related to the automatic transmission.
27% of reported issues are related to the check engine light.
24% of reported issues are related to the steering assist system.
15% of reported issues are related to the thermostat.
Recall Details for the 2020 Chevrolet Blazer
The following 3 recalls have been issued for the 2020 Chevrolet Blazer by NHTSA:
Summary: 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.
Consequence: 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.
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.
Summary: 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.
Consequence: 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.
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 r...
Summary: 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.
Consequence: If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.
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.
NHTSA Complaint Summaries for the 2020 Chevrolet Blazer
Below are complaint narratives filed by owners of the 2020 Chevrolet Blazer with the National Highway Traffic Safety Administration. 1 complaint involved crashes. 2 reported injuries or fatalities.
Just took my car to the Chevy dealership today and had them go over the car because I keep getting the message steering assist has been reduced and the fan is constantly running at the highest speed and it also makes it where I can not use the a/c or heat in the car! I don’t know the code off hand but it has something to do with the cam shaft and the thermostat for the antifreeze! From what Chevy ...
Vehicle has shift to park light and will not turn off even with the shifter in the park position.
P0128 code for thermostat issue. Fans run after shutting car off. Steering assist reduced message. Check engine light. Chevy knows this is a common issue. This needs to be investigated asap.
The contact owns a 2020 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with VVT sensor failure. The sensors were replaced; however, the failure recurred. The vehicle was taken back to the mechanic, where a solenoid was replaced. The vehicle was repa...
Driving down the road at 50 mpg when to car just shut off had a hard time getting it off the road and did still was all the way we almost got hit three times
Engine showing PO128 code. Steering Assist System reduced power. Engine fan constantly running. Engine temp on dash is stuck on the "C" mark, doesn't move. Thermostat and temp sensor replaced, issue continues. THIS IS A VERY COMMON PROBLEM ON GM VEHICLES WITH THE 3.6L AROUND THE 60,000 MILE MARK. GM NEEDS TO GET IT FIGURED OUT.
I received a check engine light which i took to Bell tire for diagnosis. Here is there diagnosis Comments: The P01F0 code on a 2020 Chevy Blazer means the engine coolant temperature is below the normal operating range, often due to a stuck-open thermostat (or both thermostats in models with dual units), a faulty Engine Coolant Temperature (ECT) sensor, or low coolant, leading to poor fuel econom...
"I was in extreme danger while traveling with my [XXX] child in the vehicle on the day prior to the total failure. During that trip, the transmission began to slip significantly in active traffic, creating a terrifying loss of motive power and a high risk of a rear-end collision. Because of this dangerous incident, I attempted to reach the dealership the following morning to prevent a crash. Upon...
The driver information center suddenly indicated steering assist disabled, temperature gauge drops to below cold, air conditioning blows warm air. This issue has happened several times and is able to be reset by disconnecting/reconnecting the battery or using a scan tool. Temperature sensor is not the cause in my opinion, and I have read that the harness for the temperature sensor also includes ...
Action required steering assist reduced and coolant temperature at 0. Air con blowing hot and check engine light on. The vehicle became hard to handle and keep in my lane on the interstate at high speeds. The problem has persisted. It has not been recitfied. I am not driving the car to avoid damage and danger. I bought the blazer on 1/6/26. The lights and issues began 8 days later. Dealership will...
2020 Chevy Blazer thermostat isn't operating correctly.
I bought this car brand new. 0 miles. I’ve had an oil leak fixed once in it. And now it’s leaking oil again. I have to have it put back in the shop and pay out of pocket once again for now fault of mine. The first time it was leaking from the cam shaft. This is ridiculous. I will also be filing a complaint with Chevy.
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 ca...
1) Part that failed per General Motors Chevrolet dealer was the Thermostat along with Coolant Sensor. 2) I was getting warning notices on dash board screen stating (Reduced steering assist) I was also getting a ESC warning 3) Problem has been repaired at GM dealer 4) Parts were replaced by GM dealer/service center 5) ESC warning light that came on for a short time after motor stopped for auto sto...
Car is cutting off while driving , I’m driving on a busy road , engine jerks and stall out leaving me with no power to accelerate. Brakes work but gas pedal not so much . I have to cut off the car hoping it turns on , cause it don’t want to turn over once I decide to turn it off
There seems to be a constant problem with the service driver assist error code popping up and check engine light coming on. The ac heating keeps losing temperature. I've looked for support for this issue and it seems to be a common problem for chevy owners. Why isn't there a recall on this.
The thermostat failed on a trip locking in 0 temperature reading and steering assist warning. Licensed mechanic repaired on 10/9/25 invoice is available. 67,509 miles. This could risk overheating and destroying the engine and might cause accident. Two other friends have had similar issues, appears to be a safety defect!
Where do I start. Spring of 2024 I believe, less than 55,000 miles, my transmission went out. No warning. I just went out to my vehicle to go to work and when I put it into reverse, my vehicle make a awful noise, jerked forward almost going into my garage door, then wouldn't move.. I put it back in park, tried to put into reverse again and it wouldn't go. It was stuck in park. Had to get it towed ...
The contact owns a 2020 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the vehicle hesitated with a grinding sound coming from the vehicle, with the check engine warning light illuminated. The contact stated that the vehicle was jerking while driving and while accelerating from a stop. In addition, the contact noticed fuel leaking from the front end of the vehicle...
Thermostat/thermostat sensor and complete water outlet system replacement at only 52,377 miles. The defective part was located under the Intake Manifold requiring its removal, excessive labor cost for the repair, and potential future engine issues due to exposed/open head gasket for the repair.
Showing 20 of 182 complaints. Additional complaints are available via the NHTSA database.
Frequently Asked Questions About the 2020 Chevrolet Blazer
Has the 2020 CHEVROLET BLAZER been recalled?
Yes, the 2020 CHEVROLET BLAZER has 3 recalls on record with NHTSA. Each recall addresses a specific safety defect identified by the manufacturer or NHTSA.
How many complaints does the 2020 CHEVROLET BLAZER have?
The 2020 CHEVROLET BLAZER has 182 complaints filed with NHTSA. Of these, 5 involved crashes. 7 injuries and 0 deaths have been reported.
What is the safety rating for the 2020 CHEVROLET BLAZER?
The 2020 CHEVROLET BLAZER received an overall NHTSA safety rating of excellent (5/5). Frontal crash: 5/5. Side crash: 5/5. Rollover: 4/5.
What are the most common problems with the 2020 CHEVROLET BLAZER?
The most commonly reported problems with the 2020 CHEVROLET BLAZER involve power train (28 complaints), unknown or other (27 complaints), engine (24 complaints). Other affected components include electrical system, power train,electrical system, power train,electrical system,engine.
How many crash reports does the 2020 CHEVROLET BLAZER have?
There are 5 crash reports associated with the 2020 CHEVROLET BLAZER out of 182 total complaints (2.7% of complaints involved crashes).
How many fire reports does the 2020 CHEVROLET BLAZER have?
There are no fire reports for the 2020 CHEVROLET BLAZER in the NHTSA database.
Are there any deaths reported for the 2020 CHEVROLET BLAZER?
No deaths have been reported in NHTSA complaints for the 2020 CHEVROLET BLAZER.
How many injuries are reported for the 2020 CHEVROLET BLAZER?
7 injuries have been reported in NHTSA complaints for the 2020 CHEVROLET BLAZER. These are self-reported by vehicle owners as part of their safety complaints.
Should I buy a 2020 CHEVROLET BLAZER?
Based on NHTSA data, the 2020 CHEVROLET BLAZER is acceptable with caveats. It has 182 complaints, 3 recalls, and a excellent (5/5) safety rating. Always have a pre-purchase inspection done by a qualified mechanic.
What components fail most on the 2020 CHEVROLET BLAZER?
The components with the most failures on the 2020 CHEVROLET BLAZER are: 1. POWER TRAIN (28 complaints), 2. UNKNOWN OR OTHER (27 complaints), 3. ENGINE (24 complaints), 4. ELECTRICAL SYSTEM (15 complaints), 5. POWER TRAIN,ELECTRICAL SYSTEM (10 complaints). POWER TRAIN is the single most-reported problem area with 28 complaints.
What should I know before buying a 2020 CHEVROLET BLAZER?
Be aware of common issues with the automatic transmission, check engine light, steering assist, and thermostat. Regular maintenance is crucial. The 2020 CHEVROLET BLAZER has 182 NHTSA complaints and 3 recalls on record. NHTSA rates it excellent (5/5).
How reliable is the 2020 CHEVROLET BLAZER?
The 2020 CHEVROLET BLAZER receives a reliability score of 5/100, indicating below-average reliability. This is based on 182 owner complaints, 3 recalls, and 5 crash/fire reports in the NHTSA database. Key known issues include Automatic Transmission Recall and Check Engine Light and Steering Assist.
What are the known issues with the 2020 CHEVROLET BLAZER?
Known issues with the 2020 CHEVROLET BLAZER include: Automatic Transmission Recall, Check Engine Light and Steering Assist, Thermostat and Coolant Sensor Failure, Tire Recall. These are based on patterns found across 182 NHTSA complaints. 3 of these patterns resulted in formal recalls.
Are there any recalls for the 2020 Chevrolet Blazer?
Yes, there are recalls for automatic transmission and tire issues.
What are the most common issues with the 2020 Chevrolet Blazer?
Common issues include automatic transmission problems, check engine light, steering assist reduction, and thermostat failures.
What should I do if I experience a check engine light or reduced steering assist?
Take your vehicle to a dealership for a diagnostic check to address these issues.
Buyer Advice
Our recommendation: Be aware of common issues with the automatic transmission, check engine light, steering assist, and thermostat. Regular maintenance is crucial.
NHTSA Data Summary for 2020 Chevrolet Blazer
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2020 Chevrolet Blazer. The data includes 182 consumer complaints filed by vehicle owners, 3 manufacturer-initiated safety recalls, 5 reported crashes, 7 reported injuries, and safety rating assessments associated with this vehicle.
The NHTSA has assigned the 2020 Chevrolet Blazer an overall safety rating of 5 out of 5 stars, with a frontal crash rating of 5 stars, a side crash rating of 5 stars, and a rollover rating of 4 stars. These ratings are determined through controlled crash testing conducted by the NHTSA.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.
Disclaimer: This analysis is AI-generated from NHTSA public data and does not constitute professional automotive or safety advice. Always verify recall status at NHTSA.gov and consult a qualified mechanic.
Analysis last updated: 2026-05-14