GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Control Assembly Replacement

Removal Procedure
  1. Remove the accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement in Instrument Panel, Gauges and Console.

    2. Object Number: 282916 Size: SH
  2. Remove the HVAC control bolts.
  3. Pull the HVAC control out from the I/P far enough to access the following components:
    4. • The vacuum connector
    • The electrical connectors
    • The temperature cable connections

    Object Number: 282918 Size: SH
  4. Disconnect the vacuum harness connector from the vacuum selector valve.

    5. Object Number: 282917 Size: SH
  5. Disconnect the following electrical connectors from the HVAC control:
    6. • HVAC mode switch (1)
    • HVAC control illumination (2)
    • HVAC blower switch (3)
    • Rear defogger (4)
  6. Remove the temperature control cable (5) from the control.

    7. When releasing the control cable clips, use a small screwdriver to gently pry the cable from the control.

Installation Procedure

    Object Number: 282917 Size: SH
  1. Install the temperature control cable connector (5) to the control.
  2. Connect the following electrical connectors to the HVAC control:
    3. • Rear defogger (4)
    • HVAC blower switch (3)
    • HVAC control illumination (2)
    • HVAC mode switch (1)

    Object Number: 282918 Size: SH
  3. Connect the vacuum harness connector to the vacuum selector valve.

    4. Object Number: 282916 Size: SH
  4. Install the HVAC control.
  5. Install the HVAC control bolts.

    6. Tighten
    Tighten the HVAC control bolts to 2.2 N·m (19 lb in).

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