GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Lug bolts for the Torque Dampener

Inspect for loose torque dampener lug bolts.

Sun Gear Thrust Washer 1st and 2nd Positions

Inspect for wear or damage.

Input Shaft Thrust Bearing Assembly

Inspect for wear or damage.

Variable High 2-3-4 Clutch Hub Thrust Bearing Assembly

Inspect the bearing for wear or damage.

Sun Gear Carrier Assembly - 1st and 2nd Positions

    • Inspect the carrier assembly for damaged pinion gears, thrust washers, pins, and rollers.
    • Inspect for a worn or damaged center support roller bearing assembly.
    • Inspect for damaged thrust bearings.
    • Inspect the carrier assembly for damaged output carrier rear sun gear thrust bearing (captured).

Front Differential Carrier Assembly

Inspect for damaged gears and bearings.

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

Inspect for damaged gears and bearings.

Internal Gear Thrust Bearing Assembly - 2nd Position

Inspect the bearing for wear or damage.