Table 1 shows two common other fuel system related problems of the 2021 GMC Sierra 1500. The number one most common problem is related to the other fuel system (24 problems). The second most common problem is related to the other fuel system hoses lines/piping, and fittings (one problem).
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems | |
| Other Fuel System Hoses Lines/piping, And Fittings problems |
While driving into work, I noticed a knocking sound from the outside of the vehicle. Once parked, upon further inspection I narrowed down the area of the noise to the bottom rear of the engine/front of transmission. Read details...
While driving during winter conditions with temperature at 3 degrees on a residential street with limited traffic, the diesel fuel in the fuel filter gelled up which caused the vehicle to display reduce power mode and then immediately shut off and would not start. Read details...