There are 9 stored owner reports matching the engine leading-label group for the 2019 Chevrolet Blazer in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 9 of 9 matching reports.
Open the full vehicle complaint log (all categories)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.
Thermostat has gone bad. Talked to Chevy and they said it is a known issue.
The thermostat has been sticking, and needs to be replaced after only 30,000 miles.
Diagnosed as a bad thermostat. AC not working. Steering assist issue. Temp gage not working. Car is out of warranty.
Coolant Thermostat needs replaced at 59945 miles. The temperature gauge stopped working and the A/C unit shut off. The temperature outside created a safety issue for my family and I to ride in the car. The engine light came on and a message that stated the Steering Assist was effected. This should not happen in a car under 60000 miles.
Po128 temp. Below normal, happens on a regular basis, at least 2 times a week,
The starter and flex plate failed (cracked) on the vehicle while on the road due to the auto start stop feature. When I stopped for a red light, the car made a loud grinding noise and would not restart leaving me stranded in traffic. The 2019 Blazer has the auto start stop feature which cannot be disabled and likely results in excess wear and tear. GM updated the 2020 model to allow the function to be disabled. GM has a number of technical bulletins highlighting both starter and flex plate issues, the first being in 2020. Both the starter and flex plate failures were verified by Reeder Chevrolet in Knoxville TN. I've asked for the flex plate to be provided when repair is complete. There were no warnings via check engine lights or any strange noises prior to the failure.
What component or system failed or malfunctioned, and is it available for inspection upon request? The radiator How was your safety or the safety of others put at risk? The vehicle can overheat, causing vehicle break down on the road Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Vehicle was inspected by Chevrolet Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No warning lights, coolant was pooling on driveway The vehicle was inspected and repaired by Chevrolet, radiator and coolant were replaced.
WHILE DRIVING THE BLAZER THE VEHICLE LOST POWER. IT WAS MISSING AND DIDN'T WANT TO GO. THE WARNING LIGHTS CAME ON. I HAD TO CALL THE TOW TRUCK TO COME PICK IT UP. I HAD IT DELIVERED TO THE SHOP WHERE I BOUGHT IT. THAT WAS ON SUNDAY, OCTOBER 6, 2019. ON MONDAY, OCTOBER 7, 2019 I WAS CALLED AND THE CONCLUSION WAS MADE THAT I HAD A DEAD INJECTOR. THEY REPLACED INJECTOR #5. PICKED IT UP ON TUESDAY, OCTOBER 8, 2019. DROVE IT HOME AND ON WEDNESDAY, OCTOBER 9, 2019 ON THE WAY TO WORK, I ENDED UP ON THE SIDE OF THE ROAD AGAIN. THE CAR DID THE EXACT SAME THING AS ON SUNDAY. THE CAR WENT DOWN TO 20 MPH. I WAS ABLE TO LIMP IT TO A PARKING LOT. I CALLED A TOW TRUCK AGAIN AND TOOK IT BACK TO THE SHOP. I AM STILL WAITING ON THE DIAGNOSIS AS OF FRIDAY, OCTOBER 11, 2019.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.