Table 1 shows ten common gasoline fuel system related problems of the 2003 GMC Envoy. The number one most common problem is related to the tank assembly (47 problems). The second most common problem is related to the tank filler pipe and cap (19 problems).
2003 GMC Envoy. Consumer writes in regards to fuel tank leak issues. Read details...
Check engine light illuminated on instrument cluster. Diagnostics indicated a code po 442. This code is indicative of a fuel system leak in the evaporative emission system. Replaced gas cap. Problem not resolved. Filled vehicle with gasoline in October 2010 and several times since. Read details...
The contact owns a 2003 GMC Envoy. The contact stated while driving approximately 30 mph, the check engine light would illuminate and the vehicle would stall on numerous occasions. The vehicle was taken to an independent mechanic who replaced the fuel pump. The repairs did not remedy the failure. Read details...