The gap should be listed on the emissions sticker under the hood. My Hatnes manual says the 4.3 v6 gap is .035, and the plug is a Champion RV15YC or equivalent.
My 1992 4.3 Tbi is .045 and my 1997 4.3 Vortec is .045
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in the trunk
No.
They are lined up like this on my 1995 Chevy blazer 4.3 L, V6 1,6,5,4,3,2
The 1996-2006 Chevy Venture has a 3.4L V6 engine and requires 6 spark plugs.
They are in the heads where the exhaust manifolds are bolted to the heads. The plugs have rubber wires hooked to the ends of them.
look under the hood. there should be a label that tells what kind.
Yes
You can replace them in any order. Just do not forget which plug wire goes to which cylinder.. The engine is a 4.3
Assuming this is a 4.3L engine, the engine temp sensor would be located on the side of the drivers side cylinder head, near the spark plugs.
Spark plugs are a cheap and quick fix if one goes out. The cost to replace one on a 454 chevy engine however can differ depending in the spark plug brand.
The spark plug gap is listed in your owner's manual and under the hood on a placard.