Removal Procedure

CAUTION: Do not allow smoking or the use of open flames in the area where work on the fuel or EVAP system is taking place. Anytime work is being done on the fuel system, disconnect the negative battery cable, except for those tests where battery voltage is required.

Ensure that the fuel level in the tank is less than 1/4 full. If necessary, drain the fuel tank to at least this level. Refer to Fuel Tank Draining Procedure .

CAUTION: Fuel supply lines will remain pressurized for long periods of time after the engine is shutdown. This pressure must be relieved before servicing the fuel system.

Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
Remove the exhaust system. Refer to Exhaust System Replacement in Engine Exhaust.
Remove the propeller shaft. Refer to Propeller Shaft Replacement in Propeller Shaft.

Fig 1: Removing/Installing Rear Drive Module (RDM) Propeller Shaft Guard & Mounting Bolts

Courtesy of GENERAL MOTORS CORP.

Remove the rear drive module propeller shaft guard (2) mounting bolts (1).

Fig 2: View Of Chassis Fuel Supply Line, EVAP Canister Purge Hose/Pipe & EVAP Canister-To-Underbody Nuts

Courtesy of GENERAL MOTORS CORP.

Remove the evaporative emission (EVAP) canister (4). Refer to Evaporative Emission (EVAP) Canister Replacement .

NOTE: Clean all fuel pipe connections and surrounding areas before disconnecting the fuel pipes to avoid contamination of the fuel system.

CAUTION: Whenever fuel lines are removed, catch fuel in an approved container. Container opening must be a minimum of 300 mm (12 in) diameter to adequately catch the fluid.

Disconnect the chassis fuel supply line (2) from the fuel tank.

Fig 3: View Of Fuel Filler Pipe, EVAP Vent & Fresh Air Hoses At Fuel Tank

Courtesy of GENERAL MOTORS CORP.

Disconnect the fuel filler tube, EVAP vent hose, and fresh air hose from the fuel tank.
Disconnect the fuel tank electrical connector and remove the electrical connector retainer from the rear frame.

Fig 4: View Of Fuel Tank Heat Shield & Fuel Tank Assembly

Courtesy of GENERAL MOTORS CORP.

NOTE: Do not bend the fuel tank straps. Bending the fuel tank straps may cause damage to the straps.

Support the fuel tank.
Remove the fuel tank strap bolts and fuel tank straps.
Lower the fuel tank from the underbody of the vehicle.
If replacing the fuel tank, remove the fuel tank module assemblies. Refer to Fuel Tank Module Replacement - Primary and Fuel Tank Module Replacement - Secondary .