[raycow]

Unless your transmission is defective or has been modified by a PO, you absolutely do not have to go inside it to enable the lockup function. All of the necessary components were installed by GM and wired to the connector on the driver side of the transmission. Remember, the lockup worked on every one of these transmissions when it left the factory.

The aftermarket vendors have done a good job of making the lockup appear much more difficult than it really is just so they could sell you overpriced parts that you don't need.

Ray