2019 Chevrolet Blazer engine problems

Related recalls

No recalls on file.

What owners say

1. Filed Aug 27, 2026OHDriver Assistance & Safety TechEngine

   Just had to replace a radiator that was leaking all across the top. Also have gotten the steering assist warning for thermostat and temperature sensor. Seems to be cery common problems rhat gm ahould fix

   NHTSA complaint #11760166 · source
2. Filed Aug 27, 202622,000 miPABody & StructureEngineTransmission & Drivetrain

   The contact owns a 2019 Chevrolet Blazer. The contact stated that while starting the vehicle, there was a strong odor coming from the vehicle, and no warning lights illuminated. The contact also stated that a "Shift to Park" warning message displayed while the vehicle was already in Park, requiring multiple shifting attempts to clear the message. The vehicle was taken to a dealer, where it was diagnosed that the radiator had failed and needed replacement. The vehicle was…

   NHTSA complaint #11760052 · source
3. Filed Aug 18, 2026NYEngineTransmission & Drivetrain

   Thermostat went bad at 47,500 miles. Temp gauge stopped working, Engine light came on and alert stating steering assist is reduced

   NHTSA complaint #11757806 · source
4. Filed May 25, 2026MDElectrical SystemEngineSteering

   Electronically controlled thermostat and sensor fail or get stuck at a much lower coolant temperature causing the dash to display the “steering assist is reduced drive with care.” It isn’t just a message, the steering is much harder to use potentially causing an accident. The ac completely doesn’t work causing potential for sensitive, elderly, or young children and pets to overheat inside, it’s significant risk of injury or death from the hot summer temperatures. The engine…

   NHTSA complaint #11739939 · source
5. Filed Apr 13, 2026MOEngineOther / Unknown

   The vehicle will not shut off when you shift to park. You are forced to sit in the vehicle for extended periods of time attempting to get the vehicle turned off. Apparently Chevy is familiar with eat problem and there are pending class action law suits in Ohio. According to the dealership Chevy has acknowledged there is a defect but no recall has been issued. We have had this issue for about two months and it is getting worse.

   NHTSA complaint #11730819 · source
6. Filed Feb 24, 2026ILEngine

   Faulty thermostat. Check engine light comes on due to thermostat getting stuck open and needing to be replaced. This is terrible for the engine and the environment.

   NHTSA complaint #11720293 · source
7. Filed Jan 17, 2026WVEngineSteering

   Was getting a steering assist reduced error code. Auto stop quit functioning and air conditioning stopped cooling. Engine sounded like a jet. P 0128 thermostat error code came up and had to be replaced. I see lots of similar complaints. Cost me $700.

   NHTSA complaint #11711579 · source
8. Filed Nov 13, 2025FLBrakesEngineSteering

   We are noticing the coolant meter seems to be stuck on C, the AC is not blowing cold and we are getting a message that ACTION REQUIRED steering assist is reduced, drive with CAUTION. Today the brakes slammed on by themselves and almost sent my wife thru the windshield. Luckily she was in a clear area with no other cars around.

   NHTSA complaint #11699307 · source
9. Filed Oct 19, 2025NCEngineSteering

   Engine temperature gauge is not working. Dash is displaying driver assist issue and steering intermittently locks up while moving. Air conditioning does not work and cooling fan is running at high speed. Thermostat and coolant temperature sensor need to be replaced. Such a high number of these vehicles are failing that i can’t even get factory parts

   NHTSA complaint #11694417 · source
10. Filed Oct 1, 2025AZElectrical SystemEngineTransmission & Drivetrain

    Dashboard goes on like a Christmas tree (almost all lights turn on ABS GAS LIGHT TRACTION CONTROL PARKING SERVICE LIGHT) check engine stays on then disappears after a few days. Transmission won’t gear into shifts only stays in one shift.

    NHTSA complaint #11690844 · source
11. Filed Aug 26, 2025NEElectrical SystemEngineSteering

    I keep getting this message that pops up, "Steering Assist reduced Drive with Care". At the same time this happens the temp gauge stays on cold, the ac quits working, the engine fan is on high, and most of the time I get code PO128. We have had it in to the dealer and they said the its the thermostat or the temp sensor. From what I am reading it could be a factory issue with the EMI issue from sensitive ECT circuitry. This has been an ongoing issue for us for over a year.

    NHTSA complaint #11683213 · source
12. Filed Jun 15, 2025OHElectrical SystemEngineTransmission & Drivetrain

    At startup, I would receive a message that said, steering assist reduced. There were no check engine lights or warning lights. My air conditioning stopped working, and my temperature gauge on the dash remained at cold. I also noticed the radiator fans were on full blast, continuously. I called the dealer, and they weren't sure what was causing that. I told them I was getting codes #U0401 & P0128. They asked me to clear the codes to see if they returned. I cleared the codes,…

    NHTSA complaint #11666997 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology