GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Restraints 🢒 SIR 🢒 Horn Switch Replacement - On Vehicle

Removal Procedure
  1. Disable the supplemental inflatable restraint (SIR) system. Refer to Disabling the SIR System in SIR.
  2. Remove the inflator module. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.

    3. Object Number: 245801 Size: SH
  3. Remove the horn contact from the steering column.
  4. Remove the four TORX® head screws from the two contact plates.
  5. Remove the two contact plates from the steering column.

Installation Procedure

    Object Number: 245801 Size: SH
  1. Install the two contact plates to the steering column.
  2. Install the four TORX® head screws in order to secure the two contact plates to the steering column.
  3. Install the horn contact to the steering column.
  4. Install the inflator module to the steering wheel. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.
  5. Enable the SIR system. Refer to Enabling the SIR System in SIR.