GM Service Manual Online
For 1990-2009 cars only
  1. Use a solvent and a stiff brush to clean the transfer case exterior.
  2. Remove the following components from the front output shaft:
  3. • The front nut
    • The washer
    • The rubber sealing washer
    • The front output flange
  4. Remove the four-wheel drive actuator switch and the O-ring seal.

  5. Object Number: 153330  Size: SH
  6. Remove the vehicle speed sensor and the O-ring seal.

  7. Object Number: 153338  Size: SH
  8. Remove the following components:
  9. 5.1. The detent plug
    5.2. The O-ring seal
    5.3. The detent spring
    5.4. The detent plunger