GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Variable Low 1-2R Clutch Assembly

    • Inspect for damaged or worn VL1-2R clutch plates.
    • Inspect for damaged VL1-2R clutch backing plate. Inspect for worn splines on backing plate.
    • Inspect for damaged VL1-2R clutch backing plate retaining ring.
    • Inspect for damaged VL1-2R clutch piston assembly, spring, spring retaining ring, and center support assembly.

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.