This is the Fortin TB-GM2 Transponder Box.
Transponder Bypass kit for Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Saturn and Suzuki Passkey 3. Refer to the vehicle compatibility list for supported vehicles. Includes a built-in transponder and inductive antenna, programming required, no key required.
This small Transponder Box (TB) plugs directly in to our CAN-SL-PL with the PATS-LINK connector and comes with an inductive antenna. The TB-GM2 is safer than using a conventional key in the box, requires no soldering and does not require the permanent use of one of the customers keys. Simply plug the Transponder Box to the CAN-SL-PL to obtain a quick and secure transponder bypass.