GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 LaCrosse 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Horn Replacement

Removal Procedure

    Object Number: 182475 Size: SH
  1. Open the hood.
  2. Remove the RH headlamp assembly. Refer to Headlamp Assembly or Headlamp Bulb Replacement .
  3. Disconnect the horn electrical connector.

    4. Object Number: 324755 Size: SH
  4. Remove the horn bracket bolt.
  5. Remove the horn from the frame rail extension.

Installation Procedure

    Object Number: 324755 Size: SH
  1. Position the horn assembly to the frame rail extension. Insert the horn anti-rotation tab into the slot on the frame rail.

    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 horn bracket bolt.

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


    Object Number: 182475 Size: SH
  3. Connect the horn electrical connector.
  4. Install the RH headlamp assembly. Refer to Headlamp Assembly or Headlamp Bulb Replacement .
  5. Close the hood.