Provisions for body-mounted warning lamp (SEO)

Years 2001–02, 2005–07 Models 2 Factory citations 8

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Also documented for GMC

Documented applications

Silverado — GMT800 (1999–2007)

2001, 2005–2007 Factory-verified

GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM Heritage factory kit — 2001 Chevrolet Silverado, p.60.
GM Heritage factory kit — 2005 Chevrolet Silverado 1500, p.196.
GM Heritage factory kit — 2006 Chevrolet Silverado, p.262.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.276.

Silverado HD — GMT800 (2001–2007)

2001, 2002, 2005 Factory-verified

years from Heritage kit pages, not in GM’s service list of that year: 2002 (kit list); 2005 (order guide)

GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Silverado HD, p.45.
GM Heritage factory kit — 2005 Chevrolet Silverado 2500HD, p.208.

This page aggregates every documented appearance of 5X7 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.