How do you change the spark plugs on a 2002 pontiac montana?

I'm having problems changing the back 3 plugs.How do you change the spark plugs on a 2002 pontiac montana?one thing that will help is to 1).disconnect the front engine struts then, roll the van back and forth while in park. when you get it rolling as far as you can forward, before it rolls back again apply the parking brake.it takes a little coordination but this will %26quot;slave%26quot; the engine in a forward position so you can get to the rear of it better. If this doesnt work you will have to support the engine cradle with a floor jack, then remove the front cradle bolts and lower the jack. this always works.How do you change the spark plugs on a 2002 pontiac montana?The back three are a pain , you will need smoke and mirrors almost. You can see the plugs or touch the plugs but not both at the same time.

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