Two problems related to other fuel system have been reported for the 2012 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 GMC Sierra 1500 based on all problems reported for the 2012 Sierra 1500.
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. Troubleshooting was performed, im told. I cant vouch for the quality of the workmanship. This should not be an issue at this mileage 100,100 ohe hundred thousand miles and oil components going bad is not good. GMC has sold me a truck that needs a new engine component. Please help. Thanks j.
Lags when accelerating. Does not happen every time. Causes safety issues when in heavy traffic. The below date is when it started. It happens very regularly.
| Other Fuel System problems | |
| Other Fuel System Pump problems |