3.1 L (191 cu in) V6, multi-port fuel injection

Years 1988–94 Models 4 Factory citations 8

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Also described as Engine, 3.1L V6, multiport fuel injectionEngine, 3.1L (191 cu in) V6, multiport fuel injection

Also documented for Buick Chevrolet Oldsmobile

Documented applications

6000 — A-body (1982–1991)

1988–1991 Single-source

1988–1989: STE with all-wheel drive only; 1990–1991: every model; 6000 years: Wikipedia 1988–1991 (6000 and 60° V6 articles); no listed Celebrity kit page prints it

Firebird — Third generation (1982–1992)

1990–1992 Factory-verified

3rdgenformula prints LHO (letter O) for 1992, and the cited Camaro pages (1990 p.47, 1991 p.31, 1992 p.89) print LHO; the zero form is the code; Firebird years: Wikipedia 1990–1992; 3rdgenformula option pages 1991–1992; shared F-body code; cited from the Camaro kits

GM Heritage factory kit — 1990 Chevrolet Camaro, p.47.
GM Heritage factory kit — 1991 Chevrolet Camaro, p.31.
GM Heritage factory kit — 1992 Chevrolet Camaro, p.89.

Grand Prix — W-body (1988–1996)

1989–1993 Factory-verified

140 hp; Wikipedia's Grand Prix infobox prints LH0 and its 60° V6 article lists the Grand Prix under LH0 for 1989–1993, which dates every year; its 1994 section says the 3.1L was changed to the 3100 SFI (L82); the kits print LHO (letter O); shared W-body code; cited from the Chevrolet Lumina kit (1991, 1993)

GM Heritage factory kit — 1991 Chevrolet Lumina, p.18.
GM Heritage factory kit — 1993 Chevrolet Lumina, p.16.

Sunbird — J-body (1988–1994)

1991–1994 Factory-verified

replaced the turbo four for 1991, when it could be ordered on every model but the new base value model (Wikipedia); Wikipedia's 60° V6 article lists the Sunbird for 1991–1994 and its Sunbird infobox prints LH0; 1993 rests on the 60° V6 article (there is no 1993 Cavalier kit); the kits print LHO (letter O); shared J-body code; cited from the Chevrolet Cavalier kit

GM Heritage factory kit — 1991 Chevrolet Cavalier, p.13.
GM Heritage factory kit — 1992 Chevrolet Cavalier, p.11.
GM Heritage factory kit — 1994 Chevrolet Cavalier, p.16.

This page aggregates every documented appearance of LH0 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.