Removal Procedure

WARNING: This page is about a different variant/trim than selected.

IMPORTANT: Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.

Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
Disconnect the fuel feed and pressure balance lines from the front tank. Refer to Quick Connect Fitting(s) Service (Metal Collar) .

Fig 1: View Of Fuel Feed And Pressure Balance Lines
Courtesy of GENERAL MOTORS CORP.
Cap the fuel and balance lines at the fuel tank in order to avoid possible system contamination.
Disconnect the fuel feed and pressure balance lines from the rear tank. Refer to Quick Connect Fitting(s) Service (Metal Collar) .

Fig 2: Fuel Feed And EVAP Quick Connect Fittings At Fuel Tank
Courtesy of GENERAL MOTORS CORP.
Cap the fuel and balance lines at the fuel tank in order to avoid possible system contamination.
Remove the rear fuel line bundle clip nuts.

Fig 3: Rear Fuel Line Bundle & Clip Nuts (Cab/Chassis - Rear)
Courtesy of GENERAL MOTORS CORP.
Remove the rear fuel line bundle.