GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1680725  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Disconnect the coolant heater cord (1) from the coolant heater.
  3. Remove the coolant heater cord clip (3) from the transaxle bracket.
  4. Cut the coolant heater cord tie strap (2) securing the cord to the engine harness.

  5. Object Number: 1680726  Size: SH
  6. Cut the coolant heater cord tie straps (1) securing the cord to the engine harness.
  7. Lower the vehicle.

  8. Object Number: 1644186  Size: SH
  9. Cut the tie strap (1) securing the coolant heater cord to the diagonal brace.
  10. Remove the coolant heater cord.

Installation Procedure


    Object Number: 1644186  Size: SH
  1. Install the coolant heater cord.
  2. Install a NEW tie strap (1) securing the coolant heater cord to the diagonal brace.

  3. Object Number: 1680726  Size: SH
  4. Raise the vehicle.
  5. Install NEW tie straps (1) securing the cord to the engine harness.

  6. Object Number: 1680725  Size: SH
  7. Install the coolant heater cord clip (3) to the transaxle bracket.
  8. Install a NEW tie strap (2) securing the cord to the engine harness.
  9. Connect the coolant heater cord (1) to the coolant heater.
  10. Lower the vehicle.