Batteries, 770 CCA, dual (SEO)

Years 2001–03, 2006 Models 5 Factory citations 10

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Also described as Battery, 770 CCA, dual (SEO)Batteries, dual 770 CCA (SEO)

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.

Silverado — GMT800 (1999–2007)

2001 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.

Silverado HD — GMT800 (2001–2007)

2001, 2002 Factory-verified

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

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

Suburban — GMT800 (2000–2006)

2001 Factory-verified

GM factory document — 2001 chevrolet chevy suburban 2wd rpo code list, p.1.

Tahoe — GMT800 (2000–2006)

2001, 2003, 2006 Factory-verified

The 2006 kit order guide prints the entry as "dual 700 CCA ... each battery is 770 CCA" on p.156 (a misprint; later pages print 770 CCA).

GM factory document — 2001 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2003 Chevrolet Tahoe, p.159.
GM Heritage factory kit — 2006 Chevrolet Tahoe, p.156.

This page aggregates every documented appearance of 8Y9 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.