GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 LSS 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Heater/Bi-Level Actuator Replacement

Removal Procedure
  1. Remove the air distributor assembly. Refer to Air Distributor Duct Replacement .
  2. Remove the clip and the screws that fasten the 2 halves of the air distributor assembly:
  3. Separate the air distributor assembly.

    4. Object Number: 327271 Size: MH
  4. In order to disconnect the vacuum actuator (5) from the air distributor assembly, unclip and disengage the vacuum actuator (5) from the valve.

Installation Procedure

    Object Number: 327271 Size: MH
  1. In order to connect the vacuum actuator (5) to the air distributor assembly, clip and engage the vacuum actuator to the valve.

    2. 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.

  2. Fasten the 2 halves of the air distributor assembly.

    3. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  3. Install the air distributor assembly. Refer to Air Distributor Duct Replacement .