A “Check Engine” light on your dashboard could mean anything from a loose gas cap to a wallet-destroying repair in the offing. For [Dean Segovis], his CEL was indicating a fairly serious condition: a ...

Next year, heavy-duty GM trucks will lose their Allison badges, even though the transmissions themselves won't change.

After more than two decades working together, General Motors and Allison Transmission are officially splitting up.

The transmission is a vital component in a vehicle's drivetrain, which transfers power from the engine to the wheels and enables smooth acceleration and controlled speed. Unfortunately, transmissions ...

For all of its complexity, the automatic transmission has been almost forgotten in the oil filtration department. For many of its 70-plus years, minimal filtration was considered "good enough." No ...