Warning problems of the 2019 Chevrolet Blazer

Two problems related to warning have been reported for the 2019 Chevrolet Blazer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2019 Chevrolet Blazer based on all problems reported for the 2019 Blazer.

1 Warning problem

Failure Date: 08/13/2025

I have replaced the thermostat sensor 3 times because keep getting assist driver assistance disabled throws code p1028 code coolant drops check engine light come on the auto stop quits working.

2 Warning problem

Failure Date: 11/16/2024

1. Wire harness with coil wires is the problem. It was fixed by a local shop and the vehicle can be inspected if needed. 2. The car throws a code for a faulty thermostat/coolant temp sensor. This will not allow the car get to oporating temp and could cause engine damage or not perform properly causing risk of an accident. Also this will reduce the driver assist features such as lane assist and adaptive cruise/braking. 3. Yes. 4. A local shop inspected the thermostat and coolant temp sensor and they oporated as they should. 5. The engine light comes on for the reasons mentioned above. It also has a "driver assist reduced" message. It appeared randomly while driving and stayed on for multiple days. Vehicle had a code for a bad thermostat/coolant temp sensor and "driver assist reduced" message. The cause is not the temp sensor or thermostat and is actually a wiring harness that two wires need to be separated from the bunch. The frequency from one wire interferes with the coolant temp sensor wires. I am on several forums for chevy Blazers and there are tons of posts about this issue with the 3. 6 v6. Most people will go in and have these expensice parts replaced. It is not acceptable to have people get charged for a $800+ job when the part is not faulty.


Other Lane Departure related problems of the 2019 Chevrolet Blazer

Warning problems
2
Assist problems
1


Blazer Service Bulletins
Blazer Safety Recalls
Blazer Defect Investigations