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 two brands have worked together for decades, but they couldn't reach an agreement to extend their longstanding licensing deal.

If you’re one of the many, many customers waiting on a replacement valve body for the 10-speed Allison transmission in your GM heavy duty truck, there may finally be some light at the end of the ...