GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39083 Glow Plug Connector Remover and Installer

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Remove the negative battery cables.
  2. Remove the glow plug lead wires using the J 39083 and installer.


    Object Number: 26774  Size: SH
  3. Remove the glow plugs (1) from cylinders 1, 3, 5 and 7.

Installation Procedure


    Object Number: 26774  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the glow plugs (1).
  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.