GY6 ● Confirmed

Buick · Regular Production Option

Axle, 3.76 final drive ratio

Years 2012 Models 1

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Documented applications

Regal — Epsilon II, 5th gen (2011–2017) →

• 2012 ● Confirmed

  the 2016 guide deleted it (p.42); new for 2012 (GM's 2012 list)

This page aggregates every documented appearance of GY6 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.