GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

Glow Plug Connector Remover and Installer

Left Side of Vehicle

  1. Remove the negative battery cables.
  2. Remove the glow plug lead wires using the glow plug connector remover and installer.


    Object Number: 64994  Size: SH
  3. Remove the glow plugs from cylinders 1, 3, 5 and 7. If a glow plug is damaged during removal, refer to

Right Side of Vehicle

  1. Raise the vehicle.
  2. Remove the right front tire.
  3. Remove the splash shield from the right front wheel well.
  4. Remove the lead wire from the glow plug in the 2 cylinder.

  5. Object Number: 26775  Size: SH
  6. Remove the lead wires for glow plugs in cylinders 4 and 6 at the harness connectors.
  7. Remove the heat shroud for the glow plug in cylinder 4.
  8. Remove the heat shroud for cylinder 6.
  9. • Slide the shrouds back far enough to allow access for unplugging the wires at cylinder 4 and 6 glow plugs.
    • Use the glow plug connector remover and installer in order to disconnect the glow plug wires.
  10. Remove the glow plugs from cylinders 2, 4, and 6. If a glow plug is damaged during the removal procedure, refer to
  11. Disconnect the lead wire at the glow plug from cylinder 8 by reaching up from underneath the vehicle.
  12. Remove the glow plug from cylinder 8. If the glow plug is damaged during the removal procedure, refer to
  13. For easier access to glow plugs on cylinders 6 and 8, it may be necessary to remove the exhaust down pipe from turbocharger.

Installation Procedure

Right Side of Vehicle

  1. Install the glow plug into cylinder 8.
  2. Tighten
    Tighten the glow plugs to 17 N·m (13 lb ft).

  3. Install the lead wire to cylinder 8 glow plug.
  4. Install the glow plugs into cylinders 2, 4, and 6 by reaching through the right front wheel well.
  5. Tighten
    Tighten the glow plugs to 17 N·m (13 lb ft).


    Object Number: 26775  Size: SH
  6. Install lead wire to glow plug 6.
  7. • Slide the shroud over the wire lead and fasten to the studs.
    • Repeat Step 4 for the cylinder 4 glow plug.

    Tighten
    Tighten the heat shroud nuts to 23 N·m (17 lb ft).

  8. Install the wires for glow plugs in cylinder 4 and 6 to connectors at the wire harness.
  9. Install the lead wire for cylinder 2 glow plug.
  10. Install the splash shield in the right front wheel well.
  11. Inspect the wire routing, making sure the lead wires are not rubbing against the exhaust manifold or any part that may harm the wire insulation.
  12. Install the right front tire.

Left Side of Vehicle


    Object Number: 64994  Size: SH
  1. Install the glow plugs.
  2. Tighten
    Tighten the glow plugs to 17 N·m (13  lb ft).

  3. Install the lead wires to the glow plugs.
  4. Install the negative battery cables.