Chassis (Cab/Chassis Front)

REMOVAL PROCEDURE




1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure.
2. Clean all the fuel pipe connections and the surrounding areas before disconnecting the pipes in order to avoid possible contamination of the fuel system.
3. Disconnect the fuel feed and return pipes (1 2) from the fuel rail.
4. Cap the fuel rail pipes.
5. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
6. Remove the fuel pipes from the bell housing stud clip (4).
7. Remove the fuel pipes from the transmission bracket clip.




8. Remove the fuel pipes from the transfer case bracket clip for the 4-wheel drive only.
9. Remove the fuel tank.




10. Note the position of the fuel pipes for aid in installation.
11. Disconnect the fuel feed pipe from the fuel filter (1).
12. Remove the fuel pipes (2) from the retaining clips.
13. Remove the fuel pipes.

INSTALLATION PROCEDURE

IMPORTANT:
^ When replacing the fuel pipes, always replace them with original equipment or parts that meet the GM specifications for those parts. The replacement pipes must have the same type of fittings as the original pipes in order to ensure the integrity of the connection.
^ DO NOT use copper or aluminum tubing to replace steel tubing. Only tubing meeting the 124 - M specification or its equivalent is capable of meeting all pressure, corrosion, and vibration characteristics necessary to ensure the durability standard required.




1. Install the fuel pipes (2) into the retaining clips.
2. Connect the fuel feed pipes to the fuel filter.
3. Install the fuel tank.




4. Install the fuel pipes into the transfer case bracket clip, for the 4-wheel drive only.




5. Install the fuel pipes into the transmission bracket clip.
6. Install the fuel pipes into the bell housing stud clip (4).
7. Lower the vehicle.
8. Remove the caps from the fuel rail pipes.
9. Connect the fuel feed and return pipes (1, 2) to the fuel rail.
10. Tighten the fuel filler cap.
11. Connect the negative battery cable.
12. Use the following procedure in order to inspect for leaks:
12.1. Turn ON the ignition, with the engine OFF, for 2 seconds.
12.2. Turn OFF the ignition for 10 seconds.
12.3. Turn ON the ignition, with the engine OFF.
12.4. Inspect for fuel leaks.
13. Install the engine sight shield.