Engine Controls - 4.8L, 5.3L, & 6.0L (Introduction): Maintenance Chevrolet Silverado 3500

Fuel Tank Draining Procedure (4.8L, 5.3L, and 6.0L Engine)

Tools Required

J 45004 Fuel Tank Siphon Hose. See Special Tools and Equipment .

1. Remove the fuel fill cap.
2. Insert the adapter to the fill pipe in order to hold open the internal fill pipe door.
3. Insert the J 45004 hose through the adapter and into the tank.
4. Attach the J 45004 hose to the hose used with the hand or air operated pumping device.
5. Using the hand or air operated pumping device, drain as much fuel from the tank as possible.

Fuel Tank Draining Procedure (5.3L (L59) Engine)

1. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
2. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-184175-S17163319502005082200000) in General Information.
3. Loosen the fuel tank fill pipe clamp (3) at the fuel tank.
4. Remove the fuel tank fill pipe.
5. Remove the flame arrester screen from the tank opening.
6. Insert a hose into the fuel tank opening.
7. Using a hand or air operated pumping device, drain as much fuel from the tank as possible.