When HPP teamed with GM Performance Parts (GMPP) and Classic Restorations to mate the new THM 4L85-E SuperMatic transmission to a built-to-the-hilt SD-455, we wanted to fully document the process ...

Ford and GM developed their current six-speed transmissions together and GM derived the eight-speed from that program.

Dealers will install a new transmission control module software free of charge and GM will provide a special coverage program for repairing transmissions identified as containing a defective ...

The 700R4 transmission from General Motors continues to be a reliable and sought-after automatic gearbox more than 40 years after its introduction. Used in all manner of cars and trucks, the GM ...

According to GM, the package includes all of the same parts as the original, automatic-transmission-calibrated package, with the only difference being the electronic control module’s programming.

General Motors extensively used the 8L family of vehicle transmissions in a variety of vehicles through its lineup, all of which had reliability concerns.

Ford Motor Co. and General Motors are planning to jointly develop what the OEMs call an “all-new generation” of nine- and 10-speed automatic transmissions for cars, crossovers, SUVs and trucks ...