Toledo Transmission (also called Toledo Transmission Operations, TTO, and Powertrain Toledo) is a 2 million square feet; 151 acres General Motors transmission factory in Toledo, Ohio.
The facility was founded in 1916, and has been the site for production of many of GM's Hydra-Matic transmissions since. The facility currently produces the Hydra-matic 6L80 Rear-Wheel-Drive 6-Speed and the Global Front-Wheel-Drive 6-Speed 6T40 transmissions. The 6L80 was built at Willow Run Transmission until production ended on December 15, 2010. GM has announced that they will also be producing an 8-speed transmission at this facility.