Second Gear Only. Buick Park Avenue 2004

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2004 🢒 Park Avenue 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Second Gear Only

Second Gear Only

Checks

Cause

DEFINITION: The transmission only provides second gear in Drive range. The vehicle accelerates from a stop in second gear and does not upshift. Second gear ratio is 1.568:1.

Control Valve Body Assembly

•	The 1-2 shift valve (318) is stuck or binding.

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

Input Carrier Assembly

•	A damaged input sun gear (668)

•	Damaged input carrier (672) planetary pinions