Brakes, hydraulic power, 4-wheel disc, 6,400 lb

Years 2004–07 Models 2 Factory citations 5

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Also described as Hydraulic brake power, disc/disc, 6,400 lbs

Also documented for GMC

Documented applications

Astro — Second generation (1995–2005)

2004, 2005 Factory-verified

GM factory document — 2004 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet astro 2wd rpo code list, p.1.

Silverado — GMT800 (1999–2007)

2004–2007 Factory-verified

GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.55.

This page aggregates every documented appearance of JH1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.