https://plaincars.com/make/chevrolet-blazer New NHTSA complaints and recalls filed for the Chevrolet Blazer. en-us Sun, 18 Oct 2026 08:38:56 GMT https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2178503 Thu, 19 Feb 2026 00:00:00 GMT This submission is an additional report related to NHTSA complaint #11714381. At approximately 55,000 miles, my 2021 Chevrolet Blazer experienced a sudden throttle body failure while driving. The vehicle entered reduced engine power/limp mode without warning and acceleration was significantly limited. This created a safety concern while driving in traffic, particularly when merging and crossing i https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2178504 Thu, 19 Feb 2026 00:00:00 GMT This submission is an additional report related to NHTSA complaint #11714381. At approximately 55,000 miles, my 2021 Chevrolet Blazer experienced a sudden throttle body failure while driving. The vehicle entered reduced engine power/limp mode without warning and acceleration was significantly limited. This created a safety concern while driving in traffic, particularly when merging and crossing i https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2178505 Thu, 19 Feb 2026 00:00:00 GMT This submission is an additional report related to NHTSA complaint #11714381. At approximately 55,000 miles, my 2021 Chevrolet Blazer experienced a sudden throttle body failure while driving. The vehicle entered reduced engine power/limp mode without warning and acceleration was significantly limited. This created a safety concern while driving in traffic, particularly when merging and crossing i https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2178055 Wed, 18 Feb 2026 00:00:00 GMT P0128 code. Coolant temperature sensor and thermostat failure. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2177957 Wed, 18 Feb 2026 00:00:00 GMT 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 https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2177958 Wed, 18 Feb 2026 00:00:00 GMT 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 https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2176678 Fri, 13 Feb 2026 00:00:00 GMT The keyless entry and start system intermittently fails to detect the key fob, preventing the vehicle from starting, locking, or unlocking. On one occasion, a "Service Keyless Start System" warning appeared on the dashboard while the vehicle was being driven at 75 MPH on a highway. The driver was unable to safely stop and feared the vehicle would become inoperable in traffic if turned off. The iss https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2176055 Thu, 12 Feb 2026 00:00:00 GMT Transmission completely failed while driving at highway speeds. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2176382 Thu, 12 Feb 2026 00:00:00 GMT I am filing a complaint regarding my 2024 Chevrolet Blazer EV (VIN: [XXX] ) due to an unresolved defect and repeated unsuccessful repair attempts. My vehicle has been presented to the dealership on four separate occasions for the same recurring mechanical noise issue. Despite these repair attempts, the defect has not been corrected. In total, the vehicle has been out of service for approximately https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2175477 Tue, 10 Feb 2026 00:00:00 GMT 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 https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2175170 Mon, 09 Feb 2026 00:00:00 GMT Thermostat Housing Replacement + Dexcool: P0128, thermostat stuck. Was told this can cause engine to overheat. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2175171 Mon, 09 Feb 2026 00:00:00 GMT Thermostat Housing Replacement + Dexcool: P0128, thermostat stuck. Was told this can cause engine to overheat. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2175172 Mon, 09 Feb 2026 00:00:00 GMT Thermostat Housing Replacement + Dexcool: P0128, thermostat stuck. Was told this can cause engine to overheat. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2175201 Mon, 09 Feb 2026 00:00:00 GMT The shift-to-park sensor in my 2019 Chevy Blazer RS is malfunctioning. After shifting into park, the vehicle does not detect that it is in park and displays a “Shift to Park” message. The issue is/has been ongoing and now it is almost impossible to bypass with wiggling the shifter. Safety Risk: The vehicle cannot be fully shut off or locked, increasing the risk of battery drain or unintended movem https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2175202 Mon, 09 Feb 2026 00:00:00 GMT The shift-to-park sensor in my 2019 Chevy Blazer RS is malfunctioning. After shifting into park, the vehicle does not detect that it is in park and displays a “Shift to Park” message. The issue is/has been ongoing and now it is almost impossible to bypass with wiggling the shifter. Safety Risk: The vehicle cannot be fully shut off or locked, increasing the risk of battery drain or unintended movem https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2175203 Mon, 09 Feb 2026 00:00:00 GMT The shift-to-park sensor in my 2019 Chevy Blazer RS is malfunctioning. After shifting into park, the vehicle does not detect that it is in park and displays a “Shift to Park” message. The issue is/has been ongoing and now it is almost impossible to bypass with wiggling the shifter. Safety Risk: The vehicle cannot be fully shut off or locked, increasing the risk of battery drain or unintended movem https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2174893 Mon, 09 Feb 2026 00:00:00 GMT The 2021 GMC Blazer (and related Chevy Blazer models) is experiencing recurring radiator failures, often requiring multiple replacements within short timeframes. The radiator was replaced in March 2024 and in early 2025 I went for an oil change and complained of smelling coolant and asked if it could be checked and was told nothing was wrong. I was told again in November 2025 that it has a leak https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2174786 Sun, 08 Feb 2026 00:00:00 GMT Radiator leak from the bottom left corner (driver side). Slow leak over time, no visible damage (per the service department), likely a manufacturing issue. Entire radiator required replacement. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173782 Thu, 05 Feb 2026 00:00:00 GMT 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. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173783 Thu, 05 Feb 2026 00:00:00 GMT 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. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173784 Thu, 05 Feb 2026 00:00:00 GMT 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. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173509 Thu, 05 Feb 2026 00:00:00 GMT My bright lights do not go off when oncoming vehicles or vehicles in front of me are close and when they do dim they go on and off. People flash their brights at me causing me not to be able to sleep and this happens even when they turned off of auto. Another item of concern is that the car would lock and unlock and the interior lights would go on and off. This was fixed but it was a line under t https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173510 Thu, 05 Feb 2026 00:00:00 GMT My bright lights do not go off when oncoming vehicles or vehicles in front of me are close and when they do dim they go on and off. People flash their brights at me causing me not to be able to sleep and this happens even when they turned off of auto. Another item of concern is that the car would lock and unlock and the interior lights would go on and off. This was fixed but it was a line under t https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173690 Thu, 05 Feb 2026 00:00:00 GMT On February 4, 2026, my wife drove to the bank, a trip of about 10 to 15 minutes, and turned off the car at the ATM. When she tried to leave, the vehicle wouldn't start. After a while, she opened and closed the door and locked and unlocked the car twice with the remote control, and the vehicle started and she was able to drive, but all the warning lights on the dashboard remained on. It is current https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173691 Thu, 05 Feb 2026 00:00:00 GMT On February 4, 2026, my wife drove to the bank, a trip of about 10 to 15 minutes, and turned off the car at the ATM. When she tried to leave, the vehicle wouldn't start. After a while, she opened and closed the door and locked and unlocked the car twice with the remote control, and the vehicle started and she was able to drive, but all the warning lights on the dashboard remained on. It is current https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173227 Wed, 04 Feb 2026 00:00:00 GMT 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 https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173228 Wed, 04 Feb 2026 00:00:00 GMT 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 https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2173229 Wed, 04 Feb 2026 00:00:00 GMT 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 https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2172685 Mon, 02 Feb 2026 00:00:00 GMT The thermostat has been sticking, and needs to be replaced after only 30,000 miles. https://plaincars.com/make/chevrolet-blazer https://plaincars.com/make/chevrolet-blazer#complaint-2171446 Fri, 30 Jan 2026 00:00:00 GMT Around 55,000 miles, my 2021 Chevrolet Blazer experienced a throttle body failure. The check engine light illuminated and the vehicle entered a reduced power/limp mode condition. Throttle response was significantly limited, and the vehicle could not accelerate normally. While the vehicle remained drivable, it took substantially longer to reach speed, which could pose a safety risk when merging int