Electrical System Related Problems of the 2021 Chevrolet Blazer

Table 1 shows three common electrical system related problems of the 2021 Chevrolet Blazer. The number one most common problem is related to the electrical system (35 problems). The second most common problem is related to the instrument panel speedometer/odometer (one problem).

Table 1. Electrical System related problems of Chevrolet Blazer


Recently reported Electrical System problems of the 2021 Chevrolet Blazer

The Electrical System problem

The thermometer and thermometer sensor are glitching . The engine temp needle will not rise at all, the engine fan will run the whole time driving and then when it is turned off will run for 10 min . Right before this happens a notice shows the guided steering is being limited.   Read details...

The Instrument Panel Speedometer/odometer problem

Odometer fraud. The contact purchased a 2021 Chevrolet Blazer. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 9,967, and at the time of registration, it was discovered that the mileage was approximately 38,000.   Read details...

The Cybersecurity problem

See attached document for complaint.   Read details...


Electrical System related problems in other Chevrolet Blazer model year vehicles:



Blazer Service Bulletins
Blazer Safety Recalls
Blazer Defect Investigations