Fuel Hose/Pipes Replacement - Chassis Front Tank
Removal Procedure
- Relieve the fuel system
pressure. Refer to the
Fuel Pressure Relief
.
- Clean all the fuel pipe connections and the surrounding areas
before disconnecting the pipes in order to avoid possible contamination
of the fuel system.
- Disconnect the fuel feed and return pipes (1,2) from the
fuel rail. Refer to
Metal Collar Quick Connect Fitting Service
.
- Cap the fuel rail pipes.
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Remove the fuel pipes from the bellhousing stud clip (4).
- Remove the fuel pipes from the transmission bracket clip.
- Remove the fuel pipes
from the transfer case bracket clip for the 4-wheel drive only.
- Remove the fuel tank. Refer to
Fuel Tank Replacement
.
- Note the position of the
fuel pipes for aid in installation.
- Disconnect the fuel feed pipe from the fuel filter inlet (4) and
outlet (2).
- Remove the fuel pipes from the retaining clips (1).
- 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. |
- Install the fuel pipes into the retaining clips (1).
- Connect the fuel feed pipes to the fuel filter. Refer to
Fuel Filter Replacement
.
- Install the fuel tank. Refer to
Fuel Tank Replacement
.
- Install the fuel pipes
into the transfer case bracket clip, for the 4-wheel drive only.
- 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
in Engine Electrical.
- Inspect for leaks using the following procedure:
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. |
- Install the engine sight shield.
Fuel Hose/Pipes Replacement - Chassis Rear Tank
Removal Procedure
- Remove the front fuel
tank. Refer to
Fuel Tank Replacement
.
- Disconnect the fuel pipe (2) from the rear fuel tank.
- Note the position of the fuel pipe for aid in installation.
- Remove the fuel pipe from the retaining clip (3).
- Remove the fuel pipe from
the retaining clips (1).
- Cap the fuel pipes in order to prevent possible fuel system
contamination.
Installation Procedure
- Remove the caps from the
fuel pipes.
- Install the fuel pipe into the retaining clips (1).
- Connect the fuel pipe
(2) at the rear fuel tank.
- Install the fuel pipe into the retaining clip (3).
- Install the fuel tank. Refer to
Fuel Tank Replacement
.
Fuel Hose/Pipes Replacement - Chassis Cab/Chassis Front
Removal Procedure
- Relieve the fuel system
pressure. Refer to the
Fuel Pressure Relief
.
- Clean all the fuel pipe connections and the surrounding areas
before disconnecting the pipes in order to avoid possible contamination
of the fuel system.
- Disconnect the fuel feed and return pipes (1, 2)
from the fuel rail. Refer to
Metal Collar Quick Connect Fitting Service
.
- Cap the fuel rail pipes.
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Remove the fuel pipes from the bellhousing stud clip (4).
- Remove the fuel pipes from the transmission bracket clip.
- Remove the fuel pipes
from the transfer case bracket clip for the 4-wheel drive only.
- Remove the fuel tank. Refer to
Fuel Tank Replacement
.
- Note the position of the
fuel pipes for aid in installation.
- Disconnect the fuel feed pipe from the fuel filter (1).
- Remove the fuel pipes (2) from the retaining clips.
- 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. |
- Install the fuel pipes (2) into the retaining clips.
- Connect the fuel feed pipes to the fuel filter. Refer to
Fuel Filter Replacement
.
- Install the fuel tank. Refer to
Fuel Tank Replacement
.
- Install the fuel pipes
into the transfer case bracket clip, for the 4-wheel drive only.
- 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
in Engine Electrical.
- Inspect for leaks using the following procedure:
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. |
- Install the engine sight shield.
Fuel Hose/Pipes Replacement - Chassis Cab/Chassis Rear
Removal Procedure
- Remove the fuel tanks.
Refer to
Fuel Tank Replacement
.
- Note the position of the fuel pipes for aid in installation.
- Remove the fuel pipes (1) from the retaining clips.
- Cap the fuel pipes in order to prevent possible fuel system
contamination.
Installation Procedure
- Remove the caps from the
fuel pipes.
- Install the fuel pipes (1) into the retaining clips.
- Install the fuel tanks. Refer to
Fuel Tank Replacement
.