Vehicle Data Hub

2021 Chevrolet Blazer electrical system problems

41 complaints about electrical system have been filed for the 2021 Chevrolet Blazer, which is 19% of all its NHTSA complaints. It is the 2nd most reported problem area for this model year.

At a glance

Complaints
41 19% of this year's complaints
Crashes and fires
0 and 0
Injuries and deaths
0 and 0

Source: NHTSA owner complaints

What the data shows

None of the electrical system complaints mention a crash, fire, injury or death.

What owners wrote

While driving the the whole dash goes blank for a few second, then then it reboots and eventually most of it comes back. However, it did this repeat this cycle and cannot tell if my signals are working or what my speed is. I have a video of it happening. The car has 2,700 miles.. I am taking to a dealership

Reported at 2,700 miles, March 2021

The contact owns a 2021 Chevrolet Blazer. The contact stated that while attempting to start the vehicle, several unknown warning lights illuminated, and other lights inside the vehicle flashed on and off. The contact stated that the failure also occurred while driving at various speeds. A dealer was contacted. The vehicle was taken to several dealers for diagnostic tests; however, the diagnostic result was unknown.

Reported at 50,000 miles, August 2025

Other problems reported for the 2021 Chevrolet Blazer

Electrical system problems in other years

Electrical system problems across all Chevrolet models