Steps, running board, side, black aluminum

Years 2005–07, 2023–27 Models 2 Factory citations 8

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Also described as Off-road rocker protection, black

Also documented for Buick GMC

Documented applications

Colorado — Third generation (2023–2027)

2023–2027 Factory-verified

ZR2: S; WT, LT, Trail Boss, Z71: not offered

GM factory document — 2023 chevrolet 23colorado electrical body builder, p.10.
GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.11.
GM factory document — 2025 chevrolet colorado fleet order guide, p.38.
GM factory document — 2026 chevrolet colorado fleet order guide, p.43.
GM factory document — 2027 chevrolet colorado fleet order guide, p.43.

TrailBlazer — GMT360 (2002–2009)

2005–2007 Factory-verified

GM factory document — 2005 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet trailblazer 2wd rpo code list, p.1.

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