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.

Some units of the 2021 Corvette Stingray may require a Transmission Control Module reprogramming. The error in the module software could result in the active ...

•Previously, we took you through the necessary steps for installing a modern electronically-shifted 4L60E trans into your third-gen. But we only got you half way there. This month we made a trip over ...

Affected vehicles include model-year 2019-20 Ascent SUVs and model-year 2020 Legacy wagons and Outback cars. A programming error in the transmission control unit may ...

CARS.COM — Vehicles affected by service bulletin: The problem: Drivers may note erratic shift patterns in the transmission due to a software glitch in the transmission control module program. See More ...

Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage ...

Subaru of America, Inc. (Subaru) is recalling certain 2020-2021 Outback and Legacy vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive ...