GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Front Differential Drive Pinion (w/Transfer Gear) Gear Assembly (481)

    • Inspect for broken or stripped Park Gear splines
    • Inspect for broken or worn Park Gear

Front Differential Carrier Assembly (486)

Inspect for damaged, broken or loose Front Differential Ring Gear

Output Carrier Transfer Drive Gear Hub Assembly (477)

    • Inspect for worn, stripped or broken splines
    • Inspect for disengaged hub to Transfer Drive Gear

Reaction Carrier Assembly (467)

    • Inspect for worn, stripped or broken splines
    • Inspect for disengaged to the Output Sun Gear (475)

Case Assembly (507)

    • Inspect for broken or damaged Case
    • Inspect for loose or stripped Park Pawl Actuator Bracket Bolts (500)
    • Inspect for broken or bent Park Pawl Actuator Bracket (501)
    • Inspect for broken or missing Park Pawl Actuator Guide Pin (505) or Manual Shaft Pin (510)
    • Inspect for broken, loose or misaligned Park Pawl Guide (506)
    • Inspect for binding or broken Park Pawl (503) or Actuator Assembly (509)

Manual Shift Detent Lever Assembly (511)

Inspect for broken or disengaged Manual Valve Link Pin