Wiring provisions, odometer security (SEO)

Years 1998–02, 2023 Models 5 Factory citations 9

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Also described as Wiring provisions, odometer security

Also documented for Chevrolet

Documented applications

Savana — GMT600 (1996–2002)

1998–2002 Factory-verified

GM factory document — 1998 gmc savana rpo code list, p.1.
GM factory document — 1999 gmc savana rpo code list, p.1.
GM factory document — 2000 gmc savana rpo code list, p.1.
GM factory document — 2001 gmc savana rpo code list, p.1.
GM factory document — 2002 gmc savana rpo code list, p.1.

Savana — GMT610 (2003–2027)

2023 Factory-verified

GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.12.

Sierra — GMT800 (1999–2007)

2001 Factory-verified

GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1.

Sierra HD — GMT800 (2001–2007)

2001 Factory-verified

GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1.

Yukon — GMT800 (2000–2006)

2001 Factory-verified

GM factory document — 2001 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of 8S8 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.