Where is the lock up clutch located?

turbine hub
The lock up clutch is installed on the turbine hub, in front of the turbine. The dampening spring absorbs the torsional force upon clutch engagement to prevent shock transfer. The friction material bonded to the lock up piston is the same as that used on the multiplate clutch discs in the transmission.

What causes the torque converter to lock in gear?

When the TCC solenoid receives a signal from the engine control module (ECM), it opens a passage in the valve body and hydraulic fluid applies the TCC. When the ECM signal stops, the solenoid closes the valve and pressure is vented, causing the TCC to disengage. This lets the torque converter lock in “gear” or unlock out of “gear.”

Where are the torque converters on the car?

As far as the positioning is concerned, torque converters lie between the flexplate of the engine and the automatic transmission. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds.

What happens to the solenoid on a torque converter?

When the ECM signal stops, the solenoid closes the valve and pressure is vented, causing the TCC to disengage. This lets the torque converter lock in “gear” or unlock out of “gear.”

What causes the torque convertor clutch to disengage?

There is a solenoid in your GM converter that causes the the torque convertor clutch (TCC) to engage and disengage. When the TCC solenoid receives a signal from the engine control module (ECM), it opens a passage in the valve body and hydraulic fluid applies the TCC.

Why do I need to lock up the torque converter?

The TCC System uses a solenoid-operated valve to couple the engine flywheel to the output shaft of the transmission through the torque converter. Lockup reduces slippage in the converter increasing fuel economy. For the converter clutch to apply, two conditions must be met: Internal transmission fluid pressure must be correct.

What should I do if my GM converter lock up?

NEVER run the vehicle in gear when supported only with a jack. Chock the drive wheels and apply the parking brake. In addition, some of the tests (test #11 and 12) require the transmission be opened and the valves are physically inspected. I do not recommend that you do this.

What is the purpose of the torque converter clutch?

The purpose of the Transmission Converter Clutch (TCC) feature is to eliminate the power loss of the torque converter stage when the vehicle is in a cruise mode. The TCC System uses a solenoid-operated valve to couple the engine flywheel to the output shaft of the transmission through the torque converter.

Where is the lock up solenoid on a trans?

The trans are built to handle the stop and go so turning it off is not a problem. DO NOT just disconnect it and leave it at that. The Lockup solenoid is under the side cover. Sometimes the engine cradle needs to be lowered to get the side pan off. The solenoid is around $50.