GM Service Manual Online
For 1990-2009 cars only

Check

Causes

DEFINITION: The transmission only provides fifth gear in Drive range. The vehicle accelerates from a stop in fifth gear.

Control Valve Body Accumulator Assembly

Feed limit valve or spring stuck in the exhaust position

Wiring Harness

Improper electrical connection to shift solenoids

Inspect for active transmission DTCs

Transmission DTC default action active