Engine, gas, 6 cylinder, 3.4 liter, multiport fuel injection, V6

Years 1991–97 Models 3 Factory citations 12

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Also described as Engine, 3.4L V6, DOHC, multiport fuel injection

Also documented for Oldsmobile Pontiac

Documented applications

Lumina — first generation, W-body (1990–1994)

1991–1994 Factory-verified

Z34 coupe; Euro 3.4 sedan (1993); the 1993 Euro 3.4 page names it DOHC; the 1991–1993 weight pages pair it with M13 or M27; the 1994 power-teams page (which prints the code LQT) gives sequential fuel injection, while the 1994 weight page still writes MFI; lumina-gen2 reads LQ1 as "Engine, gas, 6 cylinder, 3.4 liter, multiport fuel injection, V6"

GM Heritage factory kit — 1991 Chevrolet Lumina, p.12, p.14.
GM Heritage factory kit — 1992 Chevrolet Lumina, p.6.
GM Heritage factory kit — 1993 Chevrolet Lumina, p.10, p.12, p.23, p.72.
GM Heritage factory kit — 1994 Chevrolet Lumina, p.39, p.42.

Lumina — second generation (1995–2001)

1995–1997 Factory-verified

The kit mass sheets word it 3.4L MFI; the order guides word it 3.4 liter SFI V6 DOHC, available on the LS and LTZ and requiring QVG tires. The 1995 kit also prints the engine as LO1; the 1998–1999 lists do not carry it.

GM Heritage factory kit — 1995 Chevrolet Lumina, p.12.
GM Heritage factory kit — 1996 Chevrolet Lumina, p.22.
GM Heritage factory kit — 1996 Chevrolet Lumina, p.104.
GM Heritage factory kit — 1997 Chevrolet Lumina, p.16.
GM Heritage factory kit — 1997 Chevrolet Lumina, p.70.

Monte Carlo — fifth generation, W-body (1995–1999)

1995–1997 Factory-verified

Z34 engine; the weight sheets word it 3.4 L MFI, the 1995 order guide 3.4 liter SFI V6 DOHC. Not on the 1998 or 1999 lists.

GM Heritage factory kit — 1995 Chevrolet Monte Carlo, p.15.
GM Heritage factory kit — 1996 Chevrolet Monte Carlo, p.78.
GM Heritage factory kit — 1997 Chevrolet Monte Carlo, p.92.

This page aggregates every documented appearance of LQ1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.