GM Service Manual Online
For 1990-2009 cars only

    Object Number: 423455  Size: SH
  1. Loosen the adjuster plug lock nut (1).
  2. Turn the adjuster plug clockwise until the adjuster plug bottoms in the gear assembly.
  3. Turn the adjuster plug back 50 degrees to 70 degrees (approximately one flat).
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the adjuster plug lock nut (1) to the adjuster plug. Hold the adjuster plug stationary while tightening the adjuster plug lock nut (1) to 68 N·m (50 lb ft) .