ENC Factory-verified

Chevrolet · Regular Production Option

HVAC provisions, auxiliary heater plumbing and wiring

Years 2001–10, 2014–18, 2022–27 Models 2 Factory citations 26

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Also documented for GMC

Documented applications

Express — GMT600 (1996–2002)

2001–2002 Factory-verified

GM factory document — 2001 chevrolet express rpo code list, p.1.
GM factory document — 2002 chevrolet express rpo code list, p.1.

Express — GMT610 (2003–2027)

2003–2010, 2014–2018, 2022–2027 Factory-verified

the 2025–2027 guides read HVAC system, auxiliary provisions; O: Cargo CG33705, Cutaway 1WT, Cutaway 2WT (2025–2026); not offered: Cargo CG23405, Cargo CG23705, Cargo CG33405; in the 2025–2027 guides only in the Cargo and Cutaway guides

GM factory document — 2003 chevrolet express rpo code list, p.1.
GM factory document — 2004 chevrolet express awd rpo code list, p.1.
GM factory document — 2005 chevrolet express awd rpo code list, p.1.
GM factory document — 2006 chevrolet express awd rpo code list, p.1.
GM factory document — 2007 chevrolet express awd rpo code list, p.1.
GM factory document — 2008 chevrolet express rpo code list, p.1.
GM factory document — 2009 chevrolet express rpo code list, p.1.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.14.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.6.
GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.12.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.7.
GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.7.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.15.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.13.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.14.
GM factory document — 2024 chevrolet 24 express savana body builder manual 18553161 2023oct26, p.13.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.11.
GM factory document — 2025 chevrolet express cargo fleet order guide, p.31.
GM factory document — 2025 chevrolet express cutaway fleet order guide, p.23.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.11.
GM factory document — 2026 chevrolet express cargo fleet order guide, p.33.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.24.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.31.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.11.

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