Gm And Allison Transmission Are Breaking Up After A Decades Long Partnership

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General Motors and Allison Transmission stock a history that goes backmost to 1928, erstwhile nan marque was known arsenic Allison Engineering Company. GM pairs nan Allison 10-speed pinch its Duramax diesel and gas-powered HD pickup trucks, specified arsenic nan 2025 Chevrolet Silverado 2500 HD Trail Boss.

For a time, Allison Transmission was portion of General Motors, but that ended erstwhile GM sold Allison successful 2007. Beginning successful 2020, GM HD pickup trucks person utilized an Allison-branded transmission that is produced by General Motors. That statement was moving until nan licensing statement betwixt GM and Allison Transmission, group to expire connected December 31, 2025, wasn't renewed. 

Current HD GM pickups, including Silverado and Sierra 2500/3500 models, usage nan 10L1000 Allison-branded automatic transmission built by GM. While nan transmission isn't really manufactured by Allison Transmission, its creation is checked and validated by Allison earlier nan Allison branding is applied to nan trucks aliases immoderate GM websites and promotional material. That'll alteration going into 2026.

Due to nan expiring licence statement pinch Allison Transmission, GMC Sierra and Chevy Silverado HD state and diesel pickups produced aft December of 2025 will nary longer beryllium equipped pinch Allison-branded transmissions. The creation of caller trading materials pinch Allison badging is group to cease astatine nan aforesaid time, but dealers are allowed to proceed to usage existing Allison branding until June 29, 2026. While utilized trucks are not affected, caller trucks near connected trader tons must beryllium retrofitted pinch caller badging. 

Car and Driver says, "Not only will GM extremity slapping Allison badges connected its trucks, but adjacent twelvemonth nan institution will retroactively hunt down immoderate unsold Allison-badged trucks and debrand them." Essentially, while nan trading and badging will alteration successful 2026, nan transmission successful HD GM pickups is staying nan aforesaid for now.

With each that happening astatine nan extremity of June 2026, it could beryllium a bully clip to shop for a HD GM pickup equipped pinch an Allison-branded transmission. Hopefully, dealers will beryllium consenting to make deals alternatively than person to re-badge nan trucks connected their lots.