2021 Chevrolet Silverado 2500 electrical system problems
Owners reported electrical system problems in 17 complaints for the 2021 Chevrolet Silverado 2500, 15% of the complaints on file. It is the 2nd most reported problem area for this model year.
At a glance
- Complaints
- 17 16% 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
6.6l gas truck would not start. Forums ive visited state this is a known problem with the ECM. After approx 30mins it started. However before that it sputtered out every time I would try to start it. It appears to be an intermittent problem. It ran fine once it eventually did start. Also auto start wouldn't engage when this problem was occurring.
The contact owns a 2021 Chevrolet Silverado 2500. The contact stated that the connector for the heater system was causing the vehicle to overheat, subsequently enabling the vehicle to go faster than 50 MPH. If the vehicle reaches 75 miles, it would immediately decrease in speed to 5 MPH. The vehicle was taken to a certified mechanic who diagnosed a P20C1 code, indicating reductant heater failure had occurred. The vehicle was not repaired.
Other problems reported for the 2021 Chevrolet Silverado 2500
- Drivetrain & axles 30 complaints