Seating arrangement, 5 passenger, front buckets and 3 passenger rear modular seat

Years 1990–92, 1998–00 Models 2 Factory citations 6

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Also described as Seating arrangement, 5 passenger, bucket seats

Also documented for Oldsmobile Pontiac

Documented applications

Lumina APV — U-body (1990–1996)

1990–1992 Factory-verified

CL: S (1990); 1991 from the dated option-weight page's "With AB4/ZPS" remark (p.47; owner B16 exception), the 1991 options page p.15 having no readable model-year field; the 1990 seating page and the 1991–1992 option-weight pages print ABA; 1992 from the rear floor mat remark

GM Heritage factory kit — 1990 Chevrolet LuminaAPV, p.12.
GM Heritage factory kit — 1991 Chevrolet LuminaAPV, p.47.
GM Heritage factory kit — 1992 Chevrolet LuminaAPV, p.41.

Venture — U-body minivan (1997–2005)

1998–2000 Factory-verified

GM factory document — 1998 chevrolet venture ext rpo code list, p.1.
GM factory document — 1999 chevrolet venture ext rpo code list, p.1.
GM factory document — 2000 chevrolet venture ext rpo code list, p.1.

This page aggregates every documented appearance of AB4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.