GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The rear defogger/antenna modules for the coupe and the sedan are similar in appearance. However, the modules are different internally. Do NOT interchange the modules.


    Object Number: 386175  Size: LH
  1. Remove the rear bench seat. Refer to Seat Replacement in Seats.
  2. Remove the rear seatback. Refer to Rear Seat Back Replacement in Seats.
  3. Remove the rear interior trim panels. Refer to the following procedures in Interior Trim:
  4. •  Rear Quarter Trim Panel Replacement
    •  Rear Quarter Upper Trim Panel Replacement
    •  Rear Quarter Lower Trim Panel Replacement
  5. Remove the rear window trim panel. Refer to Rear Window Trim Panel Replacement in Body Rear End.
  6. Move the insulation aside.
  7. Remove the rear defogger/antenna module screws (2).
  8. Disconnect the antenna lead (1).
  9. Disconnect the electrical connector (3).
  10. Remove the module (4).

Installation Procedure


    Object Number: 386175  Size: LH
  1. Connect the electrical connector (3).
  2. Connect the antenna lead (1).
  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.

  4. Install the module (4) with the screws (2).
  5. Tighten
    Tighten the rear defogger/antenna module screws to 1.5 N·m (17 lb in).

  6. Reposition the insulation.
  7. Install the rear window trim panel. Refer to Rear Window Trim Panel Replacement in Body Rear End.
  8. Install the rear interior trim panels. Refer to the following procedures in Interior Trim:
  9. •  Rear Quarter Trim Panel Replacement
    •  Rear Quarter Upper Trim Panel Replacement
    •  Rear Quarter Lower Trim Panel Replacement
  10. Install the rear seatback. Refer to Rear Seat Back Replacement in Seats.
  11. Install the rear bench seat. Refer to Seat Replacement in Seats.