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 ...

General Motors has initiated a pilot program to repair or replace the automatic 9T65 9-speed transmission that is found in a variety of its crossover models.

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 ...

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 ...

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.

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 ...