Table 1 shows two common other fuel system related problems of the 2012 GMC Sierra 1500. The number one most common problem is related to the other fuel system (two problems). The second most common problem is related to the other fuel system pump (one problem).
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems | |
| Other Fuel System Pump problems |
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...
I have been smelling a strong odor of gas coming thru my air vents while my vehicle is running, particularly while I am idling and just after acceleration. My mechanic stated he has repaired several of these issues on other GMC's. Read details...