GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 DeVille 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Horn Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the lower air deflector. Refer to Front Air Deflector Replacement in Body Front End.

    3. Object Number: 545772 Size: SH
  3. Disconnect the horn connectors (1) from the horns .

    4. Object Number: 545724 Size: SH
  4. Remove the fastener securing the horns to the body.
  5. Remove the horns from the body.

Installation Procedure

    Object Number: 545724 Size: SH
  1. Install the horns to the body.

    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 fastener in order to secure the horns to the body.

    3. Tighten
    Tighten the bolts to 15 N·m (11 lb ft).


    Object Number: 545772 Size: SH
  3. Connect the horn connectors (1) to the horns.
  4. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  5. Lower the vehicle.