GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Heater Coolant Heater Control Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Disconnect the heater coolant heater electrical connectors.

    3. Object Number: 1658697 Size: SH
  3. Remove the heater coolant heater control module upper retaining screws.
  4. Remove the heater coolant heater control module lower retaining screws.
  5. Remove the heater coolant heater control module from the coolant heater.
  6. Disconnect the heater coolant heater control module to coolant heater electrical connector.

Installation Procedure
  1. Connect the heater coolant heater control module to coolant heater electrical connector.
  2. Install the heater coolant heater control module to the coolant heater.

    3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1658697 Size: SH
  3. Install the heater coolant heater control module retaining screws.
    4. • Tighten the upper screws to 3 N·m (27 lb in).
    • Tighten the lower screws to 6 N·m (53 lb in).
  4. Connect the heater coolant heater electrical connectors.
  5. Lower the vehicle.