GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Terrain 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Glow Plug Replacement

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1820433 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove engine cover. Refer to Engine Cover Replacement .
  3. Remove the charge air system hoses and ducts. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement .

    4. Object Number: 1820622 Size: SH
  4. Remove the PCV valve and adapter. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .
  5. Remove the glow plug heat shield.

    6. Object Number: 1820624 Size: SH
  6. Disconnect the glow plug wiring harness.

    7. Object Number: 1820625 Size: SH

    Important: If it is necessary to remove the No. 3 and No. 4 glow plugs, the turbocharger must be removed to gain access. Refer to Turbocharger Replacement .

  7. Remove the glow plug.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1820625 Size: SH
  1. Install the glow plug.

    2. Tighten
    Tighten the glow plug to 9 N·m (79.7 lb in).


    Object Number: 1820622 Size: SH
  2. Install the glow plug heat shield.

    3. Tighten

        • Tighten the glow plug heat shield bolt to 20 N·m (14.8 lb ft).
        • Tighten the glow plug heat shield nut engine lift bracket retaining nut to 28 N·m (20.6 lb ft).
  3. Install the PCV valve and adapter. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .

    4. Object Number: 1820433 Size: SH
  4. Install the charge air system hoses and ducts. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement .
  5. Install the engine cover. Refer to Engine Cover Replacement .
  6. Connect the negative battery cable.