Wheel, single rear

Years 1984–88, 1992, 1994, 1996–10 Models 6 Factory citations 24

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

Also documented for Cadillac GMC

Documented applications

C/K pickup — GMT400 (1988–2000)

1988, 1992, 1994, 1996–2000 Factory-verified

the kit pages also print RO4; the 1994 kit citation prints the code only inside another option's cross-reference (no defining line found)

GM factory document — 1998 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM Heritage factory kit — 1988 Chevrolet Truck, p.142.
GM Heritage factory kit — 1992 Chevrolet Truck, p.64.
GM Heritage factory kit — 1994 Chevrolet Truck, p.54.
GM Heritage factory kit — 1996 Chevrolet Truck, p.26.
GM Heritage factory kit — 1997 Chevrolet Truck, p.54.

C/K pickup — Square body (1983–1991)

1984–1987 Factory-verified

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.

Express — 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 chevrolet express rpo code list, p.1.
GM factory document — 2002 chevrolet express rpo code list, p.1.

Express — 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 chevrolet express rpo code list, p.1.
GM factory document — 2004 chevrolet express awd rpo code list, p.1.
GM factory document — 2005 chevrolet express awd rpo code list, p.1.
GM factory document — 2006 chevrolet express rpo code list, p.1.
GM factory document — 2007 chevrolet express awd rpo code list, p.1.
GM factory document — 2008 chevrolet express rpo code list, p.1.
GM factory document — 2009 chevrolet express rpo code list, p.1.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.16.

Chevy Van — Second generation G-series (1983–1996)

1984 Factory-verified

G31303 commercial cutaway and G31332 RV cutaway; the 1984 page prints RO4; 1984 from the 1984 data book pages in the kit file labelled 1985.

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

Silverado — GMT800 (1999–2007)

2000 Factory-verified

the 2000 service lists print it RO4 (letter O)

GM Heritage factory kit — 2000 Chevrolet Truck and Silverado, p.58.

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