How to replace Spark plugs on 2005 Pontiac Montana Sv6? Thanks

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Question moved to model category.

Pontiac Montana Thermostat Replacement Cost Estimate

https://repairpal.com > estimator > thermostat-replaceme...
The average cost for a Pontiac Montana Thermostat Replacement is between $570 and $623. ... Labor costs are estimated between $204 and $257 while parts are priced ...
Or DIY.

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Pontiac Montana Sv6 Complete Workshop Service Repair Manual 2005 2006 2007...

On this website you find fuse box diagram for Pontiac Montana SV6 2005 - 2006

Pontiac Montana SV6 2005 2006 fuse box diagram Auto Genius

It is usually coming from the spark plug wires( leak spark). Spark to ground or piece of metal.
To find out exactly take an empty spray bottle fill her up with water and add 2 tablespoons of salt. With the engine running a light spray of the mix on spark plug wires you will see the spark leak and proof the spark plug wires have a defect. if so replace all spark plug wires that should solve your problem.

Hope it helps.

On this website (link below) you find fuse box diagram and description for Pontiac Montana Sv6 (2005 - 2006)

Pontiac Montana SV6 2005 2006 fuse box diagram Auto Genius

On this website (link below) you find fuse box diagram and description for Pontiac Montana Sv6 (2005 - 2006)

Pontiac Montana SV6 2005 2006 fuse box diagram Auto Genius

153624 or 143625

I have a 1999 Pontiac Montana and the factory alarm continues to go off, how do i get it to stop ?

For the sliding doors you need to clean the contacts, there are 6 or 8 on both sides, just wipe them clean as they are probably covered in oil/grease/grime.

element in the seat is burned out remove the cover and you will see a burn spot in the element