Table 1 shows four common gasoline fuel system related problems of the 1999 GMC Sierra 1500. The number one most common problem is related to the fuel hoses lines/piping and fittings (two problems). The second most common problem is related to the tank mounting (one problem).
| Problem Category | Number of Problems |
|---|---|
| Fuel Hoses Lines/piping And Fittings problems | |
| Tank Mounting problems | |
| Tank Assembly problems | |
| Gasoline Fuel System problems |
I noticed a strong odor of gas coming from under the truck. I only noticed the fuel leaking when the truck was on a downhill grade. I climbed under the truck to see where it was coming from. It turns out that the fuel leak is coming from the return line on the frame under where the fuel filter is Read details...
The contact owns a 1999 GMC Sierra 1500. The contact stated that while driving 35 mph, he heard an abnormal noise in the drive shaft. The vehicle was taken to an independent mechanic for diagnosis where the contact was informed that the fuel tank straps were fractured. Both straps were replaced. Read details...
The first time I bought the vehicle it overflowed fuel when I filled the fuel tank to it's capacity. I assumed a vent line was loose, but knew it would be a big job to drop the fuel tank and check, so I just limited the amount of fuel I would fill the tank with. Read details...