Seat, passenger, auxiliary, folding

Years 1964, 1967–72, 1983–84, 1986, 1988–90, 1993–94, 1998–05 Models 3 Factory citations 17

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Also described as Supplementary (auxiliary) seatAuxiliary 1-passenger seatSeat, front auxiliary

Also documented for Cadillac GMC

Documented applications

C/K Trucks

1964 Factory-verified

GM Heritage factory kit — 1964 Chevrolet Truck, p.15.
1967–72 Confirmed

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Astro — Second generation (1995–2005)

1998–2005 Factory-verified

GM factory document — 1998 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet astro 2wd rpo code list, p.1.

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

1983, 1984, 1986, 1988–1990, 1993, 1994 Factory-verified

1983–1990: stationary passenger seat including D20 sunshade; 1993–1994: includes assist handle; 1984 from the 1984 data book pages in the kit file labelled 1985.

GM Heritage factory kit — 1983 Chevrolet Vandura, p.17.
GM Heritage factory kit — 1985 Chevrolet G Van, p.20.
GM Heritage factory kit — 1986 Chevrolet G Van, p.66.
GM Heritage factory kit — 1988 Chevrolet Vandura, p.23.
GM Heritage factory kit — 1989 Chevrolet G Van, p.16.
GM Heritage factory kit — 1990 Chevrolet G Van, p.16.
GM Heritage factory kit — 1993 Chevrolet G Van, p.43.
GM Heritage factory kit — 1994 Chevrolet G Van, p.13.

This page aggregates every documented appearance of A57 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.