GM Allison Transmission Licensing Renewed for Chevrolet Silverado, GMC Sierra HD 2026

GM and Allison Transmission have renewed their licensing agreement, reversing an earlier decision announced last November that would have ended Allison branding on the automaker’s heavy-duty pickup trucks after December 31, 2025. Under the updated arrangement, the Allison badge will continue to appear on 2026 model-year Chevrolet Silverado HD and GMC Sierra HD trucks built at Flint Assembly in Michigan and Oshawa Assembly in Ontario, Canada.

Renewed branding agreement restores Allison identity

The renewed deal centers on brand continuity rather than product changes. GM confirmed that the agreement ensures customers will continue to see the trusted Allison name associated with its heavy-duty pickups, a factor that has long influenced buyer confidence in the segment.
“GM and Allison have a long history of working together to develop tough, dependable transmissions. This agreement will reinforce to customers that Chevy and GMC HD Trucks are equipped with trusted, Allison-branded 10L1000 10-speed transmission that delivers the performance, capability, and durability customers expect” according to a GM spokesperson.

Focus on customer perception and trust

For GM, the continuation of Allison branding supports a message of durability and proven performance, especially for buyers who associate the Allison name with long-term reliability in demanding work environments.

No mechanical changes behind the Allison badge

Despite the renewed GM Allison Transmission licensing, the agreement does not involve any changes to transmission design or manufacturing. Allison has not physically produced transmissions for GM since the 2020 model year, when GM transitioned to its in-house 10L1000 10-speed automatic transmission.
This transmission is manufactured at GM’s Toledo Propulsion Systems plant in Ohio. Since that transition, Allison’s involvement has been limited to brand licensing and marketing support rather than engineering or hardware development.

Legacy reputation continues to influence buyers

Allison built a strong reputation among GM heavy-duty truck customers throughout the 2000s and 2010s, particularly when Duramax diesel trucks featured transmissions fully designed and manufactured by Allison. That legacy continues to resonate with buyers today.
Current L5P Gen 2 heavy-duty trucks use GM-engineered transmissions that carry the Allison name. The renewed licensing agreement reinforces continuity and customer confidence, signaling consistency in performance expectations without indicating any underlying mechanical updates.