GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Warning: Refer to Gasoline/Gasoline Vapors Warning in the Preface section.


    Object Number: 1863838  Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement.
  2. Remove the charge air system pipes. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement.

  3. Object Number: 1820509  Size: SH

    Note: To avoid fuel spillage or damage to the injector pipe connector, hold the injector pipe connector using tools and unscrew the pipe nut. And then, put a cap on the injector connector to avoid contamination from dust as soon as the fuel pipes are removed.

  4. Hold the injector pipe connector with a wrench (1) and unscrew the fuel pipe-to-injector nut (M14).

  5. Object Number: 1820510  Size: SH
  6. Hold the injection pump pipe connector with a wrench (1) and unscrew the fuel pipe-to-common rail nut (M14).

  7. Object Number: 1820511  Size: SH
  8. Unscrew the fuel pipe-to-common rail nut (M17) and the fuel pipe-to-injector nuts (M17).
  9. Remove the fuel pipe-to-common rail retaining bolt from the thermostat housing.
  10. Note: Put a cap on the common rail pipe threads to avoid contamination from dust as soon as the pipes are removed.

  11. Remove the fuel pipe-to-common rail and the fuel pipe-to-injector pipes.

Installation Procedure


    Object Number: 1820511  Size: SH

    Note: Do not reuse the fuel pipes. If reused, the contaminated pipes may damage the injectors or cause leak from the pipes.

  1. Clean the common rail pipe threads, if contaminated.
  2. Loosen the injector bracket bolts.
  3. Install the fuel pipes and tighten the nuts by hand between the injectors and the common rail.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the injector bracket bolt and tighten to 28 N·m (20.7 lb ft).

  6. Object Number: 1820509  Size: SH
  7. While holding the injector pipe connector with a wrench (1) install the fuel pipe-to-injector nut (M14) and tighten to 27 N·m (19.9 lb ft).
  8. Tighten the fuel pipe-to-injector nut (M17) to 20 N·m (14.8 lb ft).

  9. Object Number: 1820510  Size: SH
  10. Install the fuel pipe and tighten the nuts by hand between the common rail and the injection pump.
  11. While holding the injection pump pipe connector with a wrench (1) install the fuel pipe-to-common rail nut (M14) and tighten to 20 N·m (14.8 lb ft).
  12. Tighten the fuel pipe-to-common rail nut (M17) to 20 N·m (14.8 lb ft).