GM Service Manual Online
For 1990-2009 cars only

Second and Third Gear Only

Checks

Cause

DEFINITION: The transmission only provides second and third gear in Drive range. The shift pattern as the vehicle accelerates from a stop is 2-2-3-3. Second gear ratio is 1.568:1 and third gear ratio is 1.000:1

Control valve body assembly

    • A faulty 1-2. 3-4 shift solenoid valve assembly (315A) is stuck Off
    • A missing or damaged shift solenoid valve O-ring seal (316)
    • Plugged or damaged solenoid valve screen/seal assembly (382)
    • Debris is found in the control valve body (301) or the spacer plate assembly (370)

Case cover assembly

A stuck, binding, or missing actuator feed limit valve line-up (414-416)