Diagram for pontiac montana 2000

SOURCE: 2002 Pontiac Montana Thermostat replacement

check the coolant level fiirst...if that is low it wont give you any heat.....to change the thermostat you have to follow the top radiator hose to the engine.at the send of it you will see a clamp take it loose...then you will see the thermostat housing its held in place by 2 bolts . once you remove them you have the thermostat....make sure you clean all the old gasket material off both the housing and mount.also make sure you get a new gasket.

SOURCE: replace thermostat 2003 pontiac montana

yes but with the right shaped wrenches and tiny hands it can be done without removing the exhaust crossover pipe

SOURCE: 2000 pontiac montana wipers stuck

This has happened a couple of times on my 1999 Pontiac Montana. Here's what I did to fix. Open the hood. Remove the shield over the the wiper cam mechanism on the passengers side. This is easy to access. Road salts and other dust and dirt gets in there and causes the sticking problem. Spray WD-40 in between the parts. Get in there with that little red spray straw and saturate it good, flush junk out. Get in the car and try the wipers. If I remember, you might have to manually place that little knob or lever on top of the cam in the opposite position to get it to resync, but try it first. Be sure the wipers are off when you're spraying the WD-40 so you don't injur your hands. I've had to do this twice and it worked both times.

SOURCE: 2001 pontiac montana overheating no warm air when heat is on

Might be a weak or failing water pump... Does it leak antifreeze or do you have to add antifreeze very often? When the engine gets to operating temperature squeeze the top radiator hose and see if you can feel pressure from the water pump forcing water through it.

SOURCE: where is the thermostat on 2000 pontiac montana

Hello,
Just changed mine. It is located on the drivers side of the engine, almost directly under the throttle body. If you are really handy with tools/etc, you can get it off yourself, but it is very much of a pain. You will have to take off the entire throttle body to do it, including the coolant hoses that run to the Throttle. It is very tight up against the exhaust crossover pipe, but you do not have to take the exhaust off.
There are 2 bolts holding on a cast aluminum "manifold" that houses the thermostat. One of the coolant hoses run directly to it. You will have to use an open end wrench, because it is too tight for a socket. The bottom/lower bolt is almost hidden and will be difficult to get off, you will have to do it by "feel".
Questions....email me at [email protected]

G.