Electrical System Related Problems of the 2021 GMC Sierra 1500

Table 1 shows six common electrical system related problems of the 2021 GMC Sierra 1500. The number one most common problem is related to the electrical system (64 problems). The second most common problem is related to the wiring (one problem).

Table 1. Electrical System related problems of GMC Sierra 1500


Recently reported Electrical System problems of the 2021 GMC Sierra 1500

The Electrical System problem

So I made an appointment to have my truck recalled and the Wednesday before I took it, and it cranked no start and I called the dealership. Ask if they had any other those like this and they said that it could be the fuel injector module and so I got it to a mechanic shop to read the codes and it   Read details...

The Wiring problem

The contact owns a 2021 GMC Sierra 1500. The contact stated while attempted to start the vehicle, the vehicle failed to operate as needed. The service parking brake, check engine, and other unknown warning lights were illuminated. The vehicle was towed to the local dealer to be diagnosed.   Read details...

The Wiring Fuses And Circuit Breakers problem

The contact owns a 2021 GMC Sierra 1500. The contact stated while driving 60 mph, there was an abnormal knocking sound coming from the engine compartment, after which the vehicle lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle failed to restart.   Read details...


Electrical System related problems in other GMC Sierra 1500 model year vehicles:



Sierra 1500 Service Bulletins
Sierra 1500 Safety Recalls
Sierra 1500 Defect Investigations