Installation Procedure

Fig 1: Inline Fuel Filter And Lines

Courtesy of GENERAL MOTORS COMPANY

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.

Install the fuel pipes into the retaining clips (1).
Connect the fuel feed pipes to the fuel filter. Refer to Fuel Filter Replacement (Cab/Chassis) , Fuel Filter Replacement (Utility) .
Install the fuel tank. Refer to Fuel Tank Replacement (Pickup) , Fuel Tank Replacement (Cab/Chassis Front) , Fuel Tank Replacement (Front Tank) .

Fig 2: View Of Fuel Feed/Return Pipe & EVAP Pipe Clip

Courtesy of GENERAL MOTORS COMPANY

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

Fig 3: View Of Rear Of Engine Fuel Pipe Connections

Courtesy of GENERAL MOTORS COMPANY

Install the fuel pipes into the transmission bracket clip.
Install the fuel pipes into the bellhousing stud clip (4).
Lower the vehicle.
Remove the caps from the fuel rail pipes.
Connect the fuel feed and return pipes (1, 2) to the fuel rail.
Tighten the fuel filler cap.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Auxiliary Battery) , Battery Negative Cable Disconnection and Connection (Single Battery) in Engine Electrical.
Inspect for leaks using the following procedure:
1. Turn ON the ignition, with the engine OFF, for 2 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Inspect for fuel leaks.
Install the engine sight shield.