Overview
- GM and Allison confirmed a renewed collaboration that brings the Allison Transmission badge back to 2026-model Silverado HD and Sierra HD pickups.
- A Chevrolet spokesperson said the agreement positions the trucks with an Allison-branded 10L1000 10-speed transmission.
- Some 2026 trucks built after the late-December licensing lapse left factories without the emblem, and GM does not plan to retrofit those units.
- Allison has not built GM’s HD truck transmissions since 2020 when GM switched to its in-house 10L1000, making the revived partnership chiefly a licensing arrangement.
- No hardware updates were announced, and prior owner-reported reliability issues with the 10L1000 remain background context.