MTH Factory-verified

Chevrolet · Regular Production Option

Transmission, automatic, 8 speed, 8L80, Gen 2

Years 2024–27 Models 1 Factory citations 12

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Also documented for GMC

Documented applications

Express — GMT610 (2003–2027)

2024–2027 Factory-verified

the 2024–2026 Upfitter lists give 8L80, Gen 2; the 2025–2027 guides read Transmission, 8-speed automatic, electronically controlled, with overdrive and tow/haul mode, and require the 4.3L V6 (LV1); S: Cargo 1WT, Cutaway CG33503, Passenger 1LS, Passenger 1LT; not offered: Cutaway 2WT (2025–2026), Cutaway 1WT CG33803, Cutaway 1WT CG33903 (2025–2026)

GM factory document — 2024 chevrolet 24 express savana body builder manual 18553161 2023oct26, p.14.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.12.
GM factory document — 2025 chevrolet express cargo fleet order guide, p.5.
GM factory document — 2025 chevrolet express cutaway fleet order guide, p.7.
GM factory document — 2025 chevrolet express passenger fleet order guide, p.5.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.12.
GM factory document — 2026 chevrolet express cargo fleet order guide, p.5.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.7.
GM factory document — 2026 chevrolet express passenger fleet order guide, p.5.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.5.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.4.
GM factory document — 2027 chevrolet express passenger fleet order guide, p.5.

This page aggregates every documented appearance of MTH in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.