GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Savana - AWD 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Heater Coolant Heater Glow Plug Replacement

Tools Required

J-38125 Terminal Repair Kit

Removal Procedure
  1. Remove the heater coolant heater. Refer to Heater Coolant Heater Replacement .
  2. Remove the heater coolant heater control unit. Refer to Heater Coolant Heater Control Replacement .

    3. Object Number: 1665678 Size: SH

    Important: Note the routing of the wiring to ensure proper installation.

  3. Using J-38125-560 remove the glow plug wiring from the electrical connector.
  4. Remove the glow plug from the heater coolant heater.

Installation Procedure

    Notice: Refer to Component Fastener Tightening Notice in the Preface section.


    Object Number: 1665678 Size: SH
  1. Install the glow plug to the heater coolant heater.

    2. Tighten
    Tighten to 2.5 N·m (22 lb in).

  2. Install the glow wiring to the electrical connector.
  3. Install the heater coolant heater control unit. Refer to Heater Coolant Heater Control Replacement .
  4. Install the heater coolant heater. Refer to Heater Coolant Heater Replacement .
  5. Lower the vehicle.