I18 ✓ Factory-verified

GMC · Regular Production Option

Engineering year, 2018

Years 2018 Models 1 Factory citations 1

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Also documented for Chevrolet

Documented applications

Savana — GMT610 (2003–2027) →

• 2018 ✓ Factory-verified internal
  ⛭ GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.15.

This page aggregates every documented appearance of I18 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.