GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC C-Series Medium Duty Truck B7 🢒 Engine 🢒 Engine Controls - 6.5L (L65) 🢒 Glow Plug Replacement - Left Side

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. Disconnect the negative battery cables.
  2. Remove the lead wires from the glow plugs in cylinders 1, 3, 5, and 7.

    3. Object Number: 26774 Size: SH
  3. Remove the glow plugs from cylinders 1, 3, 5, and 7. If a glow plug is damaged during the removal procedure, refer to Damaged Glow Plug Removal Damaged Glow Plug Removal .

Installation Procedure

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

    2. Tighten
    Tighten the glow plugs to 17 N·m (13 lb ft).

  2. Install the lead wires for the glow plugs.
  3. Inspect the wire routing, ensuring that the lead wires are not rubbing against the exhaust manifold or any part that may harm the wire insulation.
  4. Connect the negative battery cables.