GM Service Manual Online
For 1990-2009 cars only

Control Assembly Replacement Chevrolet

Removal Procedure


    Object Number: 302649  Size: MH
  1. Remove the accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement in Instrument Panel, Gauges and Console.
  2. Remove the heater control (1) retaining screws.
  3. Pull the heater control (1) away from the instrument panel.
  4. Disconnect the electrical connections.
  5. Disconnect the vacuum hoses.
  6. Disconnect the temperature blend cable.

Installation Procedure


    Object Number: 302649  Size: MH
  1. Connect the electrical connections.
  2. Connect the temperature blend cable.
  3. Connect the vacuum hoses.
  4. Install the heater control (1) to the instrument panel.
  5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the heater control (1) retaining screws.
  7. Tighten
    Tighten the screw to 2 N·m (18 lb in).

  8. Install the accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement in Instrument Panel, Gauges and Console.

Control Assembly Replacement Pontiac

Removal Procedure


    Object Number: 302654  Size: MH
  1. Remove the accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement in Instrument Panel, Gauges and Console.
  2. Remove the heater control (1) retaining screws.
  3. Pull the heater control (1) away from the instrument panel.
  4. Disconnect the electrical connections.
  5. Disconnect the vacuum hoses.
  6. Disconnect the temperature blend cable.

Installation Procedure


    Object Number: 302654  Size: MH
  1. Connect the electrical connections.
  2. Connect the temperature blend cable.
  3. Connect the vacuum hoses.
  4. Install the heater control (1) to the instrument panel.
  5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the heater control retaining screws.
  7. Tighten
    Tighten the screw to 2 N·m (18 lb in).

  8. Install the accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement in Instrument Panel, Gauges and Console.