1)What exactly is torque converter lock-up. 2)When should you change converters for a different stall speed?
Thanks
Greg
1) It's a mechanical function controlled by an electric solenoid in the transmission valve body. Basically, all converters slip a bit, so GM built a clutch into ours. When the solenoid is energized, the clutch is engaged, ("locks up") and you have no slippage. GM did it mainly for fuel efficiency.... of course, the "go fast" crowd has figured out how make it a performance item
2) Take a look at:
Torque Converter Basics
That's a good tutorial on all of this...
1)What is the specific proceedure, for removing/replacing, the torque converter clutch, lock-up electric solenoid-and, what is the latest GM part number, for this item?
Thankyou;
Turbojet
E-MAIL: woody4421@juno.com
http://www.gnttype.org/techarea/transmission/transpage.html
and
http://www.gnttype.org/techarea/transmission/tccsol.html
The solenoid is pretty easy, but the clutch itself is part of the torque converter, so you'll have to pull the trans and replace the converter. Transmission removal is also covered on the page listed above.