Fuel Tank Draining (Dual Tanks - Rear)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

J 45004 Fuel Tank Siphon Hose

Fig 1: Fuel Tank Filler Housing to Body Screws And Retainer

Courtesy of GENERAL MOTORS CORP.

WARNING:

Refer to Gasoline/Gasoline Vapors Warning .

Remove the fuel fill cap.
Remove the fuel tank filler housing to body TORX® screws (1) and retainer (2).

Fig 2: Fuel Tank Filler Housing

Courtesy of GENERAL MOTORS CORP.

Remove the fuel tank filler housing to fuel tank fill pipe screws.
Remove the filler housing.

Fig 3: Fuel Hoses And Clamp

Courtesy of GENERAL MOTORS CORP.

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Loosen the fill hose clamp (3) at the rear tank.
Remove the fill hose from the rear tank.
Insert the siphon hose from the J 45004 into the fuel tank.
Attach the siphon hose from the J 45004 to the pump devise.
Using a hand or air operated pump device, drain as much fuel from the tank as possible.