Removal Procedure

Fig 1: Locating Fuel Rail Assembly ID Number

Courtesy of GENERAL MOTORS CORP.

An 8-digit identification number is stamped on the fuel rail assembly. Refer to this model identification number if servicing or part replacement is required.

1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .
2. Before removal, clean the fuel rail assembly with a spray type engine cleaner, GM X-30A or equivalent, if necessary. Follow the package instructions. Do not soak fuel rails in liquid cleaning solvent.
NOTE:
• Remove the fuel rail assembly carefully in order to prevent damage to the injector electrical connector terminals and the injector spray tips. Support the fuel rail after the fuel rail is removed in order to avoid damaging the fuel rail components.
• Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering open pipes and passages.
3. Disconnect the fuel feed hose from the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
Fig 2: View Of Accelerator Control Cable
Courtesy of GENERAL MOTORS CORP.
4. Disconnect the accelerator cable from the throttle body. Refer to Accelerator Controls Cable Replacement .
5. Move the accelerator cable aside.
Fig 3: Fuel Rail Assembly & Bolts
Courtesy of GENERAL MOTORS CORP.
6. Disconnect the electrical connectors from the fuel injectors. Identify the connectors to their corresponding injectors to ensure correct sequential injector firing order after reassembly.
7. Disconnect the electrical harness from the fuel rail brackets.
8. Remove the fuel rail attaching bolts.
9. Remove the fuel rail assembly.
10. Remove the injector lower O-ring seal from the spray tip end of each injector.
11. Discard the O-ring seals.