GM/Detroit 6.5L ENGINE CONTROLS – Glow Plug Replacement – Right Side

Removal Procedure
Tools Required
J 39083 Glow Plug Connector Remover and Installer
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. Remove the lead wires for glow plugs in cylinders 4 and 6 at the harness connectors.
6. Remove the heat shroud for the glow plug in cylinder 4.
7. Remove the heat shroud for cylinder 6.
• Slide the shrouds back far enough to allow access for unplugging the wires at cylinder 4 and 6 glow plugs.
• Use the J 39083 in order to disconnect the glow plug wires.
8. Remove the glow plugs from cylinders 2, 4, and 6. If a glow plug is damaged during the removal procedure, refer to Damaged Glow Plug Removal.
9. Disconnect the lead wire at the glow plug from cylinder 8 by reaching up from underneath the vehicle.
10. Remove the glow plug from cylinder 8. If the glow plug is damaged during the removal procedure, refer to Damaged Glow Plug Removal.
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
Notice : Refer to Fastener Notice in Cautions and Notices.
1. Install the glow plug into cylinder 8.
Tighten
Tighten the glow plugs to 17 N-m (13 lb ft).
2. Install the lead wire to cylinder 8 glow plug.
3. Install the glow plugs into cylinders 2, 4, and 6 by reaching through the right front wheel well.
Tighten
Tighten the glow plugs to 17 N-m (13 lb ft).
4. Install lead wire to glow plug 6.
• 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).
5. Install the wires for glow plugs in cylinder 4 and 6 to connectors at the wire harness.
6. Install the lead wire for cylinder 2 glow plug.
7. Install the splash shield in the right front wheel well.
8. 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.
9. Install the right front tire.

Damaged Glow Plug Removal
Notice : Retrieve the damaged glow plug from the cylinder or serious engine damage will occur.
1. Remove the injector nozzle from the failed glow plug cylinder.
2. Place a shop towel in the precup chamber in order to capture the glow plug tip when it breaks off from the glow plug shell upon removal (this will keep the tip from dropping into the cylinder).
3. Use a pair of needle nose pliers (or other gripping device) in order to grasp the tip and remove it from the precup chamber.
4. Remove the shop towel and reinstall the injector nozzle.
5. If the glow plug tip has already broken off the glow plug and it is not retrievable from the precup chamber, remove the cylinder head so that the tip can be retrieved from the piston cylinder. Refer to cylinder head removal.

 

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