GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2001 🢒 DeVille 🢒 Body and Accessories 🢒 Entertainment 🢒 Navigation Data Processor Replacement

Removal Procedure

    Important: The CD can not be removed from the navigation data processor after the power has been disconnected from the processor.

  1. Turn ON the ignition, with the engine OFF.
  2. Remove the CD from the navigation data processor.
  3. Turn OFF the ignition.
  4. Remove the upper trunk trim. Refer to Rear Compartment Front Trim Panel Replacement in Body Rear End.
  5. Remove the rear shelf trim panel. Refer to Rear Window Shelf Trim Panel Replacement in Interior Trim.
  6. Remove the rear shelf carrier. Refer to Rear Shelf Carrier Replacement in Interior Trim.

    7. Object Number: 577867 Size: SH
  7. Disconnect the electrical connections (1, 4) from the navigation data processor (2) and from the radio receiver (3).

    8. Object Number: 474820 Size: SH
  8. Remove the fasteners  (1) retaining the navigation data processor / radio bracket to the rear shelf.
  9. Remove the navigation data processor, the radio, and the bracket assembly from the vehicle.

    10. Object Number: 577872 Size: SH
  10. Remove the fasteners (4) retaining the navigation data processor (5) to the navigation data processor / radio bracket (2).
  11. Remove the navigation data processor (5) from the navigation data processor / radio bracket (2).

Installation Procedure

    Object Number: 577872 Size: SH
  1. Install the navigation data processor (5) to the navigation data processor / radio bracket (2).

    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 fasteners (4).

    3. Tighten
    Tighten the fasteners to 5 N·m (44 lb in).

  3. Install the navigation data processor and the bracket assembly.

    4. Object Number: 474820 Size: SH
  4. Install the fasteners (1).

    5. Tighten
    Tighten the fasteners to 9 N·m (80 lb in).


    Object Number: 577867 Size: SH
  5. Connect the navigation data processor (2), and the radio receiver (3) electrical connectors (1, 4).
  6. Turn ON the ignition, with the engine OFF.
  7. Reinstall the navigation CD.
  8. Turn OFF the ignition.
  9. Install the rear shelf carrier. Refer to Rear Shelf Carrier Replacement in Interior Trim.
  10. Install the rear shelf trim panel. Refer to Rear Window Shelf Trim Panel Replacement in Interior Trim.
  11. Install the upper trunk trim. Refer to Rear Compartment Front Trim Panel Replacement in Body Rear End.