GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette Ext. 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Heater Core Cover Replacement

Removal Procedure
  1. Remove the right instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gauges and Console.
  2. Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gauges and Console.
  3. Remove the lower center console. Refer to Front Floor Console Replacement in Instrument Panel, Gauges and Console.
  4. Remove the console bracket. Refer to Floor Console Bracket Replacement in Instrument Panel, Gauges and Console.
  5. Remove the floor duct brace.
  6. Remove the floor duct.

    7. Object Number: 295347 Size: SH
  7. Remove the screws retaining the heater core outlet cover.
  8. Remove the heater core outlet cover.

    9. Object Number: 295349 Size: SH
  9. Remove the screws retaining the heater core cover.
  10. Remove the heater core cover.

Installation Procedure

    Object Number: 295349 Size: SH
  1. Install the heater core cover.

    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. Install the heater core cover retaining screws.

    3. Tighten
    Tighten the screws to 1.6 N·m (14 lb in).


    Object Number: 295347 Size: SH
  3. Install the heater core outlet cover.
  4. Install the heater core outlet cover retaining screws.

    5. Tighten
    Tighten the screws to 1.6 N·m (14 lb in).

  5. Install the floor duct.
  6. Install the floor duct brace.
  7. Install the floor duct brace retaining nuts.

    8. Tighten
    Tighten the nuts to 10 N·m ( 89 lb in).

  8. Install the console bracket. Refer to Floor Console Bracket Replacement in Instrument Panel, Gauges and Console.
  9. Install the lower center console. Refer to Front Floor Console Replacement in Instrument Panel, Gauges and Console.
  10. Install the left instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gauges and Console.
  11. Install the right instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gauges and Console.