GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

1-3R and VH2-3-4 Clutch Assembly

    • Inspect for damaged or worn 1-3R and VH2-3-4 clutch plates.
    • Inspect for damaged 1-3R and VH2-3-4 clutch piston, piston housing, spring, and dam assembly.
    • Inspect for damaged 1-3R and VH2-3-4 clutch piston dam retaining ring.
    • Inspect for cut, worn, or damaged 1-3R and VH2-3-4 clutch piston seal, inner seal, and housing seals.
    • Inspect for improper selective 1-3R and VH2-3-4 clutch backing plate retaining ring.
    • Inspect for damaged 1-3R and VH2-3-4 clutch backing plate. Inspect for worn splines on the backing plate.

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.

Carrier 2nd Position Assembly

Inspect for damaged splines on the hub assembly.