The longstanding partnership between General Motors (GM) and Allison Transmission is set to end after this year. This ...

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

While GM is preparing to retire the Allison Transmission branding from its HD pickups, the Chevy Silverado MD will continue ...

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

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