Wheel, single rear

Years 1984–87, 1998–10 Models 9 Factory citations 23

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Also described as Wheel, single, rearWheel configuration, rear, singleRear wheels, singleWheels, single rear

Also documented for Cadillac Chevrolet

Documented applications

Savana — GMT600 (1996–2002)

2001–2002 Factory-verified

the 2001–2002 lists print RO4, a letter O; GM's other lists print R04 for the same wording

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)

2003–2010 Factory-verified

the 2003–2006 lists read Wheel Single Rear; the 2015–2017 Upfitter manuals still print the code with do not use after model year 2011, so later years are not claimed

GM factory document — 2003 gmc savana rpo code list, p.1.
GM factory document — 2006 gmc savana rpo code list, p.1.
GM factory document — 2008 gmc savana rpo code list, p.1.
GM factory document — 2008 chevrolet ld electricalfullsizevans, p.18.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.16.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.16.

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 — GMT800 (1999–2007)

2000 Factory-verified

the 2000 service lists print it RO4 (letter O)

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

Sierra — Square body (1983–1991)

1984–1987 Factory-verified

shared platform code; cited from the square-body C/K pickup kits; only in: 30 series fleetside; the kit pages also print RO4

GM Heritage factory kit — 1984 Chevrolet Truck, p.48.
GM Heritage factory kit — 1985 Chevrolet Truck, p.46.
GM Heritage factory kit — 1986 Chevrolet Truck, p.155.
GM Heritage factory kit — 1987 Chevrolet Truck, p.63.

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.

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

1984 Factory-verified

G31303 commercial cutaway and G31332 RV cutaway; the 1984 page prints RO4; 1984 from the February 1984 data book pages in the mislabelled G-Van kit file; shared G-van platform code; cited from the Chevrolet G-Van kit

GM Heritage factory kit — 1985 Chevrolet G Van, p.86.

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.

Yukon — GMT800 (2000–2006)

2000 Factory-verified

the 2000 list prints RO4 (letter O) and words it as a single rear axle; pickup or dual-rear-wheel code from the lists shared with the pickups; no source shows it on a Yukon

GM factory document — 2000 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of R04 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.