Second and Third Gear Only (1-2 Solenoid Stuck Off)

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

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 control valve body spacer plate and gasket assembly (396)
Case Cover Assembly	A stuck, binding, or missing actuator feed limit valve line-up (414-416)