One problem related to instrument panel fuel gauge has been reported for the 2003 GMC Envoy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Envoy based on all problems reported for the 2003 Envoy.
The car's gas gauge and fuel range indicator are problematic. The fuel gauge quickly drops from a higher reading, like 3/4 full, to empty. After this, the gauge and the fuel range both fluctuate while driving, making it impossible to determine the fuel level.