First and Fourth Gear Only - 1-2 Solenoid Stuck On. Buick Park Avenue 2004

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2004 🢒 Park Avenue 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 First and Fourth Gear Only - 1-2 Solenoid Stuck On

Checks

Cause

DEFINITION: The transmission only provides first and fourth gear in Drive range. The shift pattern as the vehicle accelerates from a stop is 1-1-4-4. First gear ratio is 2.921:1 and fourth gear ratio is 0.705:1.

Control Valve Body Assembly

•	A faulty 1-2, 3-4 shift solenoid valve assembly (315A) is stuck On.

•	Debris is found in the control valve body (301) or the control valve body spacer plate and gasket assembly (396)