GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Grand Am 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Defroster Valve Actuator Replacement

Removal Procedure

    Object Number: 604753 Size: SH
  1. Remove the instrument panel (IP) carrier. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gauges and Console.
  2. Remove the blue vacuum hose (1) and the green vacuum hose (2) from the defroster actuator.

    3. Note the location of the hoses.


    Object Number: 604614 Size: SH
  3. Remove the defroster actuator.
    4. 3.1. Lift the actuator lock tab.
    3.2. Slide off the actuator.

    Object Number: 604733 Size: SH
  4. Remove the actuator linkage from the defroster valve lever.

    5. Squeeze the tabs on the lever in order to remove the linkage.

Installation Procedure

    Object Number: 604733 Size: SH
  1. Install the actuator linkage to the defroster valve lever.

    2. Object Number: 604614 Size: SH
  2. Slide the defroster actuator on to the mounting bracket until the tab locks.

    3. Object Number: 604753 Size: SH
  3. Connect the blue vacuum hose (1) and the green vacuum hose (2) to the defroster actuator.
  4. Install the instrument panel (IP) carrier. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gauges and Console.