Third and Fourth Gear Only (2-3 Solenoid Stuck Off). Buick Park Avenue 2004

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2004 🢒 Park Avenue 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Third and Fourth Gear Only (2-3 Solenoid Stuck Off)

Checks

Cause

DEFINITION: The transmission only provides third and fourth gear in Drive range. The shift pattern as the vehicle accelerates from a stop is 4-3-3-4. Third gear ratio is 1.000:1 and fourth gear ratio is 0.705:1.

Control Valve Body Assembly

•	A faulty 2-3 shift solenoid valve assembly (315B) is stuck Off.

•	A missing or mislocated 2-3 shift solenoid valve (315B) and retainer (314C)

•	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)