Color combination, deluxe two-tone

Years 1983–91, 1998–00 Models 10 Factory citations 25

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Also described as Color combination, deluxe two tone

Also documented for Cadillac Chevrolet

Documented applications

Jimmy (full-size) — Square body (1983–1991)

1990, 1991 Single-source

shared square-body platform code; cited from the Chevrolet Blazer kit; 1991 rests on the Chevrolet-only 1991 Blazer book, so the row is single-source

GM Heritage factory kit — 1990 Chevrolet Blazer, p.15.
GM Heritage factory kit — 1991 Chevrolet Blazer, p.15.

Jimmy — first generation (1983–1994)

1989 Factory-verified

includes B84 moldings; shared S/T platform code; cited from the joint S-10/15 Blazer/Jimmy pages of the S-10 Blazer kit

GM Heritage factory kit — 1989 Chevrolet Blazer, p.17.

Safari — First generation (1985–1994)

1990 Factory-verified

includes D85 striping; shared M-body code; cited from the joint Astro/Safari pages of the Astro kits.

GM Heritage factory kit — 1990 Chevrolet Astro Van, p.7.

Sierra — GMT400 (1988–2000)

1998–2000 Factory-verified

GM factory document — 1998 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 2000 gmc gmc c pickup 2wd rpo code list, p.1.

Sierra — Square body (1983–1991)

1983–1987 Factory-verified

shared platform code; cited from the square-body C/K pickup kits; fleetside only

GM Heritage factory kit — 1983 Chevrolet Truck, p.39.
GM Heritage factory kit — 1984 Chevrolet Truck, p.36.
GM Heritage factory kit — 1985 Chevrolet Truck, p.35.
GM Heritage factory kit — 1986 Chevrolet Truck, p.167.
GM Heritage factory kit — 1987 Chevrolet Truck, p.51.

Sonoma — first generation (1982–1993)

1989–1990 Factory-verified

1989 from the joint data book's weight page; shared S-series code; cited from the joint S-10/S-15 pages of the S-10 kits

GM Heritage factory kit — 1989 Chevrolet S 10, p.20.
GM Heritage factory kit — 1990 Chevrolet S 10, p.27.

Suburban — GMT400 (1992–1999)

1998–1999 Factory-verified

GM factory document — 1998 gmc gmc suburban 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc suburban 2wd rpo code list, p.1.

Suburban — Square body (1983–1991)

1989–1990 Factory-verified

1989 from the joint book's color combinations page headed deluxe two-tone (ZY4) (the 1989 option line prints 2Y4); 1991 is left out because only the color combinations page of the Chevrolet-only 1991 book prints it; shared square-body platform code; cited from the Chevrolet Suburban kit

GM Heritage factory kit — 1989 Chevrolet Suburban, p.20.
GM Heritage factory kit — 1990 Chevrolet Suburban, p.18.

Vandura and Rally — Second generation G-series (1983–1996)

1983, 1984, 1986, 1988, 1989 Factory-verified

includes B84 black body side moldings; shared G-van platform code; cited from the Chevrolet G-Van kit

GM Heritage factory kit — 1983 Chevrolet Vandura, p.12.
GM Heritage factory kit — 1984 Chevrolet G Van, p.14.
GM Heritage factory kit — 1986 Chevrolet G Van, p.37.
GM Heritage factory kit — 1988 Chevrolet Vandura, p.33.
GM Heritage factory kit — 1989 Chevrolet G Van, p.16.

Yukon — GMT400 (1992–1999)

1998–1999 Factory-verified

GM factory document — 1998 gmc yukon 2wd rpo code list, p.1.
GM factory document — 1999 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of ZY4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.