GM Service Manual Online
For 1990-2009 cars only

Radio Replacement RPO Code UM6, UM7

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the battery negative cable.
  2. Remove the instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement.

  3. Object Number: 490518  Size: SH
  4. Remove the radio mounting screws.
  5. Remove the radio.
  6. Disconnect the electrical connector and the antenna lead.

Installation Procedure


    Object Number: 490518  Size: SH
  1. Connect the electrical connector and the antenna lead.
  2. Install the radio.
  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 radio mounting screws.
  5. Tighten
    Tighten the screws to 1.9 N·m (17 lb in).

  6. Install the instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement.
  7. Connect the battery negative cable.
  8. Verify proper radio operation.
  9. Refer to Control Module References for programming and setup information.

Radio Replacement RPO Code UC6

Removal Procedure

  1. Remove the instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement.

  2. Object Number: 804339  Size: SH
  3. Remove the screws that secure the radio to the instrument panel.
  4. Remove the radio from the support bracket enough to access the connectors at rear of the radio.

  5. Object Number: 804340  Size: SH
  6. Disconnect the electrical connector (2) from the radio.
  7. Remove the radio.

Installation Procedure


    Object Number: 804340  Size: SH
  1. Connect the electrical connector (2) to the radio.
  2. Align the radio locator tab (1) into the locator hole.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 804339  Size: SH
  4. Install the radio retaining screws.
  5. Tighten
    Tighten the radio retaining screws to 2 N·m (18 lb in).

  6. Install the instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement.
  7. Recalibrate the new radio assembly.
  8. Refer to Control Module References for programming and setup information.