Electrical System Related Problems of the 2018 GMC Sierra 1500

Table 1 shows three common electrical system related problems of the 2018 GMC Sierra 1500. The number one most common problem is related to the electrical system (40 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 2018 GMC Sierra 1500

The Electrical System problem

1. Electronic power steering modular issue. My 2018 GMC seirra 1500 crew cab just lost all power steering. Then when I park it. Assist notifications come on, abs notices, brake light stays on, trailer/tow notifications, trailer assist, parking brake, etc suddenly a loud thump & feels like the   Read details...

The Instrument Panel Speedometer/odometer problem

Odometer fraud. The contact purchased a 2018 GMC Sierra 1500. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 72,000. It was later discovered later that the mileage was 241,556.   Read details...

The Battery Dead problem

Battery dies after 5days of not being driven. Battery continues to go dead, dealer states nothing is wrong. No repairs were made. Stranded 5 times with a dead battery   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