GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Montana 🢒 Body and Accessories 🢒 Seats 🢒 Front Seat Lumbar Support Replacement

Removal Procedure

    Object Number: 317163 Size: SH
  1. Remove the front seat. Refer to Bucket Seat Replacement .
  2. Remove the seat back cover. Refer to Front Seat Back Cushion Cover Replacement .
  3. Remove the seat back pad. Refer to Front Seat Back Cushion Pad Replacement .
  4. Remove the cardboard panel from the lumbar.
  5. Carefully bend up the seat back retainers that secure the lumbar to the seat back frame.
  6. Remove the lumbar actuator screws.
  7. Remove the lumbar assembly and cable from the seat back frame.

Installation Procedure

    Object Number: 317163 Size: SH
  1. Install the lumbar assembly and cable to the seat back frame.
  2. Install the lumbar actuator to the seat back frame.

    3. 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.

  3. Install the lumbar actuator screws.

    4. Tighten
    Tighten the lumbar actuator screws to 2 N·m (18 lb in).

  4. Carefully bend down the seat back retainers in order to secure the lumbar mechanism to the seat back frame.
  5. Install the cardboard panel to the lumbar.
  6. Install the seat back pad. Refer to Front Seat Back Cushion Pad Replacement .
  7. Install the seat back cover. Refer to Front Seat Back Cushion Cover Replacement .
  8. Install the front seat. Refer to Bucket Seat Replacement .