GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Steering 🢒 Steering Wheel and Column - Tilt 🢒 Ignition Switch Assembly - Disassemble - Off Vehicle

Disassembly Procedure
  1. Remove the dimmer switch assembly. Refer to Dimmer Switch Assembly - Disassemble - Off Vehicle .

    2. Object Number: 378838 Size: SH
  2. Remove the dimmer and ignition switch mounting stud (3).
  3. Remove the ignition switch assembly (2) from the steering column jacket assembly (1).