GM Service Manual Online
For 1990-2009 cars only

Coolant Heater Cord Replacement LY7, KO5

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 785737  Size: SH
  3. Disconnect the coolant heater power supply cord from the coolant heater (1).
  4. Disconnect the coolant heater cord clip (2) from the coolant heater cord.
  5. Lower the vehicle.
  6. Disconnect the coolant heater cord clips (3, 4) from the following:
  7. • The engine wiring harness conduit
    • The engine oil level indicator tube
  8. Remove the coolant heater cord from the vehicle.

Installation Procedure


    Object Number: 785737  Size: SH
  1. Position the coolant heater power supply cord to the engine.
  2. Route the coolant heater cord along the engine wiring harness conduit.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Connect the coolant heater cord to the coolant heater (1).
  5. Secure the coolant heater cord clip (2) to the coolant heater cord.
  6. Lower the vehicle.
  7. Secure the coolant heater cord clips (3, 4) to the following:
  8. • The engine wiring harness conduit
    • The engine oil level indicator tube

Coolant Heater Cord Replacement LH2, K05, KA3

Removal Procedure


    Object Number: 1655864  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Disconnect the coolant heater power supply cord from the coolant heater.
  3. Lower the vehicle.
  4. Disconnect the coolant heater cord clips from the following:
  5. • The engine wiring harness conduit
    • The engine oil level indicator tube
  6. Remove the coolant heater cord from the vehicle.

Installation Procedure


    Object Number: 1655864  Size: SH
  1. Position the coolant heater power supply cord to the engine.
  2. Route the coolant heater cord along the engine wiring harness conduit.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Connect the coolant heater cord to the coolant heater.
  5. Secure the coolant heater cord clip to the coolant heater cord.
  6. Lower the vehicle.
  7. Secure the coolant heater cord clips to the following:
  8. • The engine wiring harness conduit
    • The engine oil level indicator tube