Fuel Filler Cap

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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 fill pipe has a tethered fuel filler cap. A torque-limiting device prevents the cap from being over tightened. To install the cap, turn the cap clockwise until you hear audible clicks. This indicates that the cap is correctly torqued and fully seated. A built-in device indicates that the fuel filler cap is fully seated. A fuel filler cap that is not fully seated may cause a malfunction in the emission system.

Fig 1: Fuel Filler Pipe Assembly - 1 Of 2

Courtesy of GENERAL MOTORS CORP.

Fig 2: Fuel Filler Pipe Assembly - 2 Of 2

Courtesy of GENERAL MOTORS CORP.

Fig 3: View Of Filler Door And Tethered Fuel Filler Cap

Courtesy of GENERAL MOTORS CORP.