M3W ✓ Factory-verified

Buick · Regular Production Option

Transmission, 9 speed automatic

Years 2018–24 Models 1 Factory citations 3

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Also documented for CadillacGMC

Documented applications

Enclave — C1XX (2018–2024) →

• 2018–2024 ✓ Factory-verified

  S on all trims; 2019–2021, 2024: GM Authority (its 2024 page says the transmission carries over from 2018 to 2023; its 2020, 2021 and 2024 pages and 2024 specifications name M3W)

  ⛭ GM factory document — 2018 buick enclave fleet order guide wayback, p.1.

  ⛭ GM factory document — 2022 buick enclave order guide copy nhtsa docket, p.9, p.33.

  ⛭ GM factory document — 2023 buick enclave order guide copy autoevolution wayback, p.8, p.31.

This page aggregates every documented appearance of M3W in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.