GM Service Manual Online
For 1990-2009 cars only

Radio Replacement U1R, UL6, UM5, UM9

Removal Procedure


    Object Number: 287815  Size: SH
  1. Remove the instrument panel center trim plate. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.
  2. Remove the console trim plate. Refer to Console Trim Plate Replacement in Instrument Panel, Gages and Console.
  3. Remove the HVAC control and the radio bracket screws.

  4. Object Number: 789914  Size: SH
  5. Disconnect the antenna and electrical connectors from the radio and the HVAC control assembly.

  6. Object Number: 288103  Size: SH
  7. Remove the radio retaining nuts.
  8. Remove the radio from the radio bracket.
  9. Important: New and remanufactured radios do not come with mounting brackets, studs or nuts. The hardware will need to be transferred to the replacement radio.

  10. If the radio is to be replaced, remove the hardware from the radio.

Installation Procedure


    Object Number: 288103  Size: SH
  1. Install the mounting hardware to the radio.
  2. Install the radio to the radio bracket.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the radio retaining nuts.
  5. Tighten
    Tighten the radio retaining nuts to 5 N·m (44 lb in).


    Object Number: 789914  Size: SH
  6. Connect the antenna and electrical connectors to the radio and the HVAC control assembly.

  7. Object Number: 287815  Size: SH
  8. Install the HVAC control and the radio assembly.
  9. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  10. Install the console trim plate. Refer to Console Trim Plate Replacement in Instrument Panel, Gages and Console.
  11. Install the IP center trim plate. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.

Radio Replacement U3Q, U3R, U3S

Removal Procedure


    Object Number: 787319  Size: SH
  1. Remove the instrument panel (IP) center trim plate. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.
  2. Remove the console trim plate. Refer to Console Trim Plate Replacement in Instrument Panel, Gages and Console.
  3. Remove the HVAC control and the navigation radio bracket screws (1).
  4. Partially remove the HVAC control and the navigation radio assembly (2) away from the IP in order to access the antenna and the electrical connections.

  5. Object Number: 787320  Size: SH
  6. Disconnect the antennas and the electrical connectors from the navigation radio and the HVAC control assembly.

  7. Object Number: 787317  Size: SH
  8. Remove the navigation radio to mounting bracket nuts
  9. Remove the navigation radio from the radio bracket.
  10. Important: New and remanufactured navigation radios do not include the mounting studs or nuts. The hardware will need to be transferred to the replacement navigation radio.

  11. If the navigation radio is to be replaced, remove the hardware from the original navigation radio.

Installation Procedure


    Object Number: 787317  Size: SH
  1. Install the mounting hardware to the navigation radio.
  2. Install the navigation radio to the mounting bracket.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the navigation radio mounting bracket nuts.
  5. Tighten
    Tighten the navigation radio nuts to 5 N·m (44 lb in).


    Object Number: 787320  Size: SH
  6. Partially install the navigation radio in order to connect antennas and electrical connectors.

  7. Object Number: 787319  Size: SH
  8. Install the HVAC control/navigation radio (2) to the IP.
  9. Install the HVAC control/navigation radio assembly (2) to IP screws (1).
  10. Tighten
    Tighten the screws (1) to 2 N·m (18 lb in).

  11. Install the console trim plate. Refer to Console Trim Plate Replacement in Instrument Panel, Gages and Console.
  12. Install the instrument panel center trim plate. Refer to Instrument Panel Center Trim Panel Replacement in Instrument Panel, Gages and Console.