Diamond Edition, special equipment package

Years 1995, 1997–98, 2000, 2003, 2005–06 Models 7 Factory citations 11

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Also described as Package, option 10Preferred equipment group 1SKPreferred equipment group 1, Impala SSEquipment group

Also documented for Cadillac GMC

Documented applications

Astro — Second generation (1995–2005)

2000 Factory-verified

GM factory document — 2000 chevrolet astro 2wd rpo code list, p.1.

Blazer — S-10 second generation (1995–2005)

2000 Factory-verified

GM factory document — 2000 chevrolet blazer 4wd rpo code list, p.1.

Cavalier — third generation (1995–2005)

1995, 1997–1998 Factory-verified

LS sedan 1995, 1997; Z24 coupe 1998

GM Heritage factory kit — 1995 Chevrolet Cavalier, p.12.
GM Heritage factory kit — 1998 Chevrolet Cavalier, p.43.

Impala SS — seventh generation (1994–1996)

1995 Factory-verified

the same contents as the 1994 group 1; the guide makes the rear defogger part of 1SK; the code of the 1995 base group is not legible

GM Heritage factory kit — 1995 Chevrolet Impala, p.11.

S-10 pickup — Second generation (1994–2004)

2000 Factory-verified

GM factory document — 2000 chevrolet s10 pickup 4wd rpo code list, p.1.

Tahoe — GMT800 (2000–2006)

2003, 2005–2006 Factory-verified

The Tahoe order guides print it as a column heading of their option tables and in the note "Equipment groups 1SJ, 1SK and 1SM available on C*15706 Models" (the 2006 note adds 1WT and 1SL); no decor name is printed with it, so none is given here

GM Heritage factory kit — 2003 Chevrolet Tahoe, p.111.
GM Heritage factory kit — 2005 Chevrolet Tahoe, p.109.
GM Heritage factory kit — 2006 Chevrolet Tahoe, p.107.

Venture — U-body minivan (1997–2005)

1997–1998 Factory-verified

equipment group; the kit order guides name it in their column headings or in option requirements, and the Venture service lists do not print it; GM's lists give the code this option number for other vehicles.

GM Heritage factory kit — 1997 Chevrolet Venture, p.50.
GM Heritage factory kit — 1998 Chevrolet Venture, p.31.

This page aggregates every documented appearance of 1SK in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.