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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L And 6.2L - Introduction (2 Of 2)) >> Description and Operation >> Fuel System Description >> Fuel Filler Cap

Fuel Filler Cap

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Fig 1: View Of Fuel Fill Pipe
GM1705563Courtesy of GENERAL MOTORS CORP.
Fig 2: Rear Fuel Fill Pipe
GM1244330Courtesy of GENERAL MOTORS CORP.
Fig 3: View Of Filler Door & Tethered Fuel Filler Cap
GM300314Courtesy of GENERAL MOTORS CORP.

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 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.