GM Service Manual Online
For 1990-2009 cars only

Special Tools

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: 1665679  Size: SH

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

  4. Using J-38125-560 remove the coolant heater combustion sensor wiring from the electrical connector.
  5. Remove the coolant heater combustion sensor from the coolant heater.

Installation Procedure

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


    Object Number: 1665679  Size: SH
  1. Install the heater coolant heater combustion sensor to the coolant heater and tighten to 2.5 N·m (22 lb in).
  2. Install the heater coolant heater combustion sensor 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.