Question about 2001 Pontiac Montana
The spark plugs are mounted in the heads, which are bolted to the top of the engine block.
The Montana has a transverse (sideways) mounted engine, so 3 of the 6 plugs will be toward the radiator, and the other 3 will toward the firewall.
There is a procedure for getting to the rear 3 plugs that requires unbolting the "dogbone" mounts, and rotating the block toward the front of the vehicle to give better access to the rear plugs.
I'd suggest you go to your local auto parts store and purchase a vehicle specific repair manual (Haynes #38036) (Section1-20) which contains detailed instructions on how to accomplish this task.
It's not all that difficult, but be patient!
Above all else, good luck!
Posted on Mar 24, 2011
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Posted on Jan 02, 2017
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