Harsh Torque Converter Clutch Apply or Release. Buick LaCrosse 2007

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2007 🢒 LaCrosse 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Harsh Torque Converter Clutch Apply or Release

Checks

Cause

DEFINITION: An unacceptably quick TCC apply or release occurs in third or fourth gear, Drive or Manual third range, with the throttle held steady.

Control Valve Body Assembly

•	The TCC regulator apply valve (327) is stuck or binding.

•	The TCC regulator apply valve spring (326) is missing or damaged.

•	The TCC control valve spring (336) is missing or damaged.

•	The control valve body spacer plate gaskets assembly (396) are misassembled or contain incorrect parts.

•	TCC PWM Solenoid faulty.