Fuel Filler Cap

Fig 1: Exploded View Of Fuel Filler Cap

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Tank Filler Cap
2	Fuel Tank Filler Pipe
3	Fuel Filler Door

NOTE: If a fuel tank filler cap requires replacement, use only a fuel tank filler cap with the same features. Failure to use the correct fuel tank filler cap can result in a serious malfunction of the fuel and EVAP system.

The fuel tank filler pipe is equipped with a turn to vent screw on the type cap which incorporates a ratchet action in order to prevent over-tightening.

The turn to vent feature allows the fuel tank pressure relief prior to removal. Instructions for proper use are imprinted on the cap cover. A vacuum safety relief valve is incorporated into this cap.