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Fuel Filler Cap

Fig 1: Exploded View Of Fuel Filler Cap
GM1962295Courtesy 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 filler cap (1) is a screw-on type, with an integrated tightening torque limiting mechanism. When installing the cap, tighten it until a ratcheting (clicking) sound is heard, indicating the cap is properly tightened. The fuel tank filler cap is tethered to the fuel filler pocket. The fuel tank filler cap requires a quarter of a turn in order to be removed.