M99 ✓ Factory-verified

Chevrolet · Regular Production Option

Transmission, automatic, electronic ratio select, GM, strong hybrid, rear-wheel drive

Years 2009 Models 2 Factory citations 2

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Also documented for CadillacGMC

Documented applications

Silverado — GMT900 (2007–2013) →

• 2009 ✓ Factory-verified

  only in: Hybrid.

  ⛭ GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Tahoe — GMT900 (2007–2014) →

• 2009 ✓ Factory-verified

  only in: Hybrid. Wikipedia's Tahoe page names a 2ML70 transmission for the hybrid.

  ⛭ GM factory document — 2009 chevrolet tahoe 2wd rpo code list, p.1.

This page aggregates every documented appearance of M99 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.