General Motors and Allison Transmission share a history that goes back to 1928, when the brand was known as Allison Engineering Company. GM pairs the Allison 10-speed with its Duramax diesel and ...

GM and Allison Transmission will officially end their heavy-duty truck partnership in 2026, concluding a collaboration that began with the Duramax diesel era in 2001. By June 29, 2026, GM must remove ...

Evan Williams is an automotive journalist and mechanical engineering technologist with more than a decade of experience in the industry. He has written for the Toronto Star and AutoTrader Canada and ...

GM and Allison Transmission, longtime partners on heavy-duty truck powertrains, are parting ways, as first reported by TFL Truck. The rollout of GM's 10-speed automatic in 2020 marked the end of ...

Chevrolet and GMC trucks will keep the same automatic transmission, but gone will be the Allison name. It’s the end of an era in the HD truck segment. General Motors and Allison Transmission will end ...

GM and Allison Transmission, longtime partners on heavy-duty truck powertrains, are parting ways, as first reported by TFL Truck. The rollout of GM's 10-speed automatic in 2020 marked the end of ...

General Motors trucks have worn Allison Transmission branding for decades, but that will stop after Dec. 31, 2025. The two parties were unable to reach an agreement to extend their longstanding ...

Earnings call Q3 2025 revenue declined 16% YoY to $693M due to soft North America on-highway demand, but Allison maintained a robust 37% adjusted EBITDA margin and generated $184M in free cash flow.