Rails, pickup box side

Years 1973–84, 1986–88 Models 4 Factory citations 7

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Also described as Pickup box side railsRails, cargo box side

Also documented for GMC

Documented applications

C/K Trucks

1973–82 Confirmed

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C/K pickup — Square body (1983–1991)

1984, 1986, 1987 Factory-verified

GM Heritage factory kit — 1984 Chevrolet Truck, p.46.
GM Heritage factory kit — 1986 Chevrolet Truck, p.157.
GM Heritage factory kit — 1987 Chevrolet Truck, p.59.

El Camino — fifth generation (1983–1987)

1983–1984 Factory-verified

The 1985–1987 order guides print 073, so those years are not claimed

GM Heritage factory kit — 1983 Chevrolet El Camino, p.6.
GM Heritage factory kit — 1984 Chevrolet El Camino, p.7.

S-10 pickup — First generation (1982–1993)

1986, 1988 Factory-verified

discontinued for 1989 (the 1989 what's-new page)

GM Heritage factory kit — 1986 Chevrolet S 10, p.17.
GM Heritage factory kit — 1988 Chevrolet S 10, p.20.

This page aggregates every documented appearance of D73 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.