V4D Factory-verified

GMC · Regular Production Option

Circuits, stop/turn signal, body control module calibration

Years 2014–16, 2018, 2022–27 Models 1 Factory citations 10

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Also documented for Chevrolet

Documented applications

Savana — GMT610 (2003–2027)

2014–2016, 2018, 2022–2027 Factory-verified

the 2023 Upfitter list reads Calibration - Separated Stop/Turn Signal Circuits; O: Cutaway 1WT, Cutaway 2WT (2025–2026); in the 2025–2027 guides only in the Cutaway guides

GM factory document — 2014 chevrolet gh van elec bbm si brief, p.8.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.12.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.17.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.14.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.15.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.13.
GM factory document — 2025 gmc savana cutaway fleet order guide, p.31.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.13.
GM factory document — 2026 gmc savana cutaway fleet order guide, p.34.
GM factory document — 2027 gmc savana cutaway fleet order guide, p.18.

This page aggregates every documented appearance of V4D in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.