GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Transmission/Transaxle 🢒 Manual Transmission - New Venture 🢒 Backup Lamp Switch Replacement

Removal Procedure

    Object Number: 102879 Size: SH
  1. Raise the vehicle.
  2. Remove the wiring harness connector from the backup lamp switch.

    3. Object Number: 102880 Size: SH
  3. Remove the backup lamp switch.

Installation Procedure

    Object Number: 102880 Size: SH

    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.

  1. Install the backup lamp switch. The backup lamp switch has pre-applied thread sealant on its threads.

    2. Tighten
    Tighten the backup lamp switch to 28 N·m (21 lb ft).


    Object Number: 102879 Size: SH
  2. Install the wiring harness connector to the backup lamp switch.
  3. Lower the vehicle.