The 2008 GMC W3500 has 3 recalls, the most serious being two significant hazards on gasoline-engine models: a fuel tank that can corrode and leak, creating a fire risk, and an accelerator pedal that can stick wide open and make the truck nearly impossible to stop.
On the fuel system side, the gas tank on affected trucks is prone to premature corrosion that causes it to leak fuel. If that leaking fuel reaches any ignition source, whether a hot exhaust component or a spark, it can start a fire. On the throttle side, the accelerator pedal can catch under a steel stopper bolt and lock in the full-throttle position. With the pedal stuck open, engine power stays at maximum and the driver loses the normal ability to control vehicle speed by lifting off the gas, making it very difficult to slow or stop the truck in traffic.