GM Service Manual Online
For 1990-2009 cars only

The fuel door lock and unlock system is operated when the doors are locked or unlocked. The fuel fill door system contains the following components:

    • Rear Integration Module (RIM)
    • Fuel Door Lock/Unlock Solenoid
    • F/TNK DR Lock Relay
    • F/TNK DR REL Relay

When the RIM receives a lock or unlock input from the door system the fuel door lock or unlock relay will be grounded through the RIM. When either relay is grounded the fuel door lock/unlock solenoid is energized and the fuel door will lock or unlock.