M3F ✓ Factory-verified

Chevrolet · Regular Production Option

Transmission, 9 speed automatic

Years 2025–27 Models 1 Factory citations 3

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Also documented for Buick

Documented applications

Trailblazer — First generation, VSS-F (2021–2027) →

• 2025–2027 ✓ Factory-verified

  only in: AWD; all trims: S

  ⛭ GM factory document — 2025 chevrolet trailblazer fleet order guide, p.7.

  ⛭ GM factory document — 2026 chevrolet trailblazer fleet order guide, p.7.

  ⛭ GM factory document — 2027 chevrolet trailblazer limited fleet order guide, p.9.

This page aggregates every documented appearance of M3F in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.