GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 XLR 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Instrument Cluster Head Up Display Replacement

Removal Procedure

    Object Number: 1224615 Size: SH

    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 negative battery cable.
  2. Remove the I/P carrier. Refer to Instrument Panel Carrier Replacement.
  3. Carefully lift the head-up display (HUD) electrical harness from between the instrument panel cluster (IPC) and the HUD.
  4. Disconnect the HUD electrical connector from the IPC.

    5. Object Number: 1224708 Size: SH
  5. Remove the retaining screws that secure the IPC to the steering column bracket.
  6. Raise the rear of the IPC slightly to release the locator tab. Reposition the IPC to access the retaining screw that secures the HUD to the steering column bracket.

    7. Object Number: 1224615 Size: SH
  7. Loosen the retaining screw that secures the HUD to the steering column bracket.
  8. Remove the HUD retaining nuts.
  9. Remove the HUD from the vehicle.

Installation Procedure

    Object Number: 378935 Size: SH
  1. Transfer the retaining screw and nut to the replacement HUD.
  2. Install the HUD to the vehicle:
    3. 2.1. Install the HUD onto the dash panel mounting studs.
    2.2. Slide the HUD retaining screw into the slot on the steering column bracket.

    Notice: Refer to Fastener Notice in the Preface section.

  3. Install the HUD retaining nuts.

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

  4. Tighten the screw that retains the HUD to the steering column bracket.

    5. Tighten
    Tighten the screw to 3 N·m (27 lb in).


    Object Number: 1224708 Size: SH
  5. Install the retaining screws that secure the IPC to the steering column bracket .

    6. Tighten
    Tighten the screws to 3 N·m (27 lb in).


    Object Number: 378944 Size: SH
  6. Connect the HUD electrical connector to the IPC.
  7. Carefully secure the HUD electrical harness (1) down between the IPC and the HUD as shown.
  8. Install the I/P carrier. Refer to Instrument Panel Carrier Replacement.
  9. Connect the negative battery cable.

    10. Tighten
    Tighten the cable bolt to 15 N·m (11 lb ft).

  10. Refer to Control Module References for programming and setup information.