Assist steps

Years 2004–08, 2016, 2025–26 Models 4 Factory citations 11

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Also described as Steps, assist

Also documented for GMC

Documented applications

Colorado — GMT355 (2004–2012)

2004–2008 Factory-verified

GM factory document — 2004 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet colorado pickup 2wd rpo code list, p.1.

Silverado Medium Duty (GM515, 2019–2026)

2025–2026 Factory-verified

GM factory document — 2025 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

Suburban — K2XX (2015–2020)

2016 Factory-verified

LT: A, only with Z71; the 2016 guide marks it no longer available, replaced by BVV

GM factory document — 2016 chevrolet suburban fleet order guide wayback, p.3.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.7.

Tahoe — K2XX (2015–2020)

2016 Factory-verified

LT: A, only with Z71; the 2016 guide marks it no longer available, replaced by BVV

GM factory document — 2016 chevrolet tahoe fleet order guide wayback, p.3.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.7.

This page aggregates every documented appearance of E01 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.