M3T ✓ Factory-verified

Chevrolet · Regular Production Option

Transmission, 9 speed automatic, electronically controlled with overdrive, includes driver shift control

Years 2025–26 Models 1 Factory citations 4

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Also documented for Buick

Documented applications

Blazer — C1XX (2019–2026) →

• 2025–2026 ✓ Factory-verified

  2LT, 3LT: S; RS: 2025: not available; 2026: S; Premier: S (2025 only); with the LSY engine

  ⛭ GM factory document — 2025 chevrolet blazer fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 chevrolet blazer fleet order guide, p.8.

  ⛭ GM factory document — 2026 chevrolet blazer fleet order guide rpo codes, p.1.

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

Related codes · mentioned in these notes

2LT3LTLSY

This page aggregates every documented appearance of M3T in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.