Single Use Fasteners and Components

Fuel Feed Pipe

Courtesy of GENERAL MOTORS COMPANY

NOTE: Callouts items in the following chart represent components shown in graphic above.

Callout	Component Name
WARNING: Refer to Diesel/Gasoline Vapors Warning . NOTE: High pressure fuel feed pipes are one time use only. ALWAYS install a NEW high pressure fuel feed pipe if the pipe is removed OR the fittings are loosened. Preliminary Procedures Relieve the fuel system pressure. Fuel Pressure Relief Fuel Pump Cover Replacement
1	Fuel Feed Intermediate Pipe Fitting [2x] CAUTION: Refer to Component Fastener Tightening Caution . Procedure Ensure ALL fittings are clean and dry prior to assembly. Lubricate the fuel feed intermediate pipe fittings with silicon free engine oil. Tighten the fuel feed intermediate pipe fittings in alternating increments. Tighten First Pass: Tighten the fitting at the fuel injection fuel rail to 15 N.m (11 lb ft). Second Pass: Tighten the fitting at the fuel pump to 15 N.m (11 lb ft). Third Pass: Tighten the fitting at the fuel injection fuel rail to 30 N.m (22 lb ft). Final Pass: Tighten the fitting at the fuel pump to 30 N.m (22 lb ft).
2	Fuel Feed Intermediate Pipe Procedure Remove and DISCARD the pipe. Inspect for leaks using the following procedure: Turn ON the ignition with the engine OFF for 2 seconds. Turn OFF the ignition for 10 seconds. Turn ON the ignition with the engine OFF. Inspect for fuel leaks. NOTE: If a fuel leak occurs at the fuel pump or the fuel injection fuel rail fitting, the corresponding component will need to be replaced.

Callout

Component Name

WARNING:

Refer to Diesel/Gasoline Vapors Warning .

NOTE:

High pressure fuel feed pipes are one time use only. ALWAYS install a NEW high pressure fuel feed pipe if the pipe is removed OR the fittings are loosened.

Preliminary Procedures

Relieve the fuel system pressure. Fuel Pressure Relief
Fuel Pump Cover Replacement

Fuel Feed Intermediate Pipe Fitting [2x]

CAUTION:

Refer to Component Fastener Tightening Caution .

Procedure

Ensure ALL fittings are clean and dry prior to assembly.
Lubricate the fuel feed intermediate pipe fittings with silicon free engine oil.
Tighten the fuel feed intermediate pipe fittings in alternating increments.

Tighten

First Pass: Tighten the fitting at the fuel injection fuel rail to 15 N.m (11 lb ft).
Second Pass: Tighten the fitting at the fuel pump to 15 N.m (11 lb ft).
Third Pass: Tighten the fitting at the fuel injection fuel rail to 30 N.m (22 lb ft).
Final Pass: Tighten the fitting at the fuel pump to 30 N.m (22 lb ft).

Fuel Feed Intermediate Pipe

Procedure

Remove and DISCARD the pipe.
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.

NOTE:

If a fuel leak occurs at the fuel pump or the fuel injection fuel rail fitting, the corresponding component will need to be replaced.