Electrical System Related Problems of the 2012 GMC Sierra 1500

Table 1 shows two common electrical system related problems of the 2012 GMC Sierra 1500. The number one most common problem is related to the electrical system (six problems). The second most common problem is related to the instrument panel speedometer/odometer (one problem).

Table 1. Electrical System related problems of GMC Sierra 1500


Recently reported Electrical System problems of the 2012 GMC Sierra 1500

The Electrical System problem

P0521 has been addressed/replaced almost nine (9) times. “low oil pressure-stop engine” is another one that is not completely functional. The truck is using oil but we cant find evidence of leakage. Services performed at dealership or certified shop.   Read details...

The Instrument Panel Speedometer/odometer problem

Odometer fraud. The contact purchased a 2012 GMC Sierra 1500. The contact stated that it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the mileage was 111,000, and at the time of registration, it was discovered that the mileage was   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