GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

Variable Low 1-2R Clutch Assembly

    • Inspect for damaged VL1-2R clutch piston assembly.
    • Inspect for worn or damaged VL1-2R splines.
    • Inspect for damaged VL1-2R clutch piston assembly.
    • Inspect for worn or damaged VL1-2R splines.

Drive Motor with Generator - Position 2 (B)

Motor Failure

    • Inspect 3 phase cables.
    • Inspect connections at motor.
    • Inspect motor end bearings.

Control Valve Upper Body Assembly

Inspect for worn, damaged, or sticking regulator valve and valve spring.

Control Valve Lower Body Assembly

Inspect for worn, damaged, or sticking clutch select solenoid valve 3 and valve spring.