GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2003 🢒 Alero 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Defroster Valve Actuator Replacement

Removal Procedure

    Object Number: 604753 Size: SH
  1. Remove the instrument panel I/P trim pad. Refer to Instrument Panel Trim Pad Replacement in Instrument Panel, Gages, and Console.

    2. Important: Note the location of the hoses.

  2. Remove the blue vacuum hose (1) and the green vacuum hose (2) from the defroster actuator.

    3. 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 door 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 door lever.

    2. Object Number: 604614 Size: SH
  2. Slide the defroster actuator onto the mounting bracket until the tab locks.
  3. Connect the blue vacuum hose and the green vacuum hose to the defroster actuator.
  4. Install the instrument panel I/P trim pad. Refer to Instrument Panel Trim Pad Replacement in Instrument Panel, Gages, and Console.