thermostat location

It is located under the intake manifold on a pipe from water pump to heater hose. Here is a guide to walk you trough the steps to replace it and a diagrams below to show you on your car.

https://www.2carpros.com/articles/replace-thermostat

Here is the location on your car check out the diagram (below) Roy

I just changed the thermostat and the heater hose connector on a 2001 Grand Am with the 2.4 L engine. I found absolutely no correct information on this subject anywhere on the internet, so count yourself fortunate that you have found this.
First, Raise the front end of the vehicle on the passenger side. Once it is safely supported, crawl underneath and follow the lower radiator hose back till it connects to a steel tube. This tube is also the thermostat housing. It turns and goes up to a location between the trans-axle and the exhaust manifold. Just past the connection point of the hose, there is a support bracket that is bolted to the engine. Remove the bolt from the bracket. If I remember correctly, it will require a 13 mm wrench. Next lower the vehicle back down. Leaning over the fender on the passenger side, look behind the engine and you will see a heat shield that covers the exhaust manifold. It is held on by three bolts that are threaded into the exhaust manifold. I recommend soaking them with a penetrate such as Kroil or Liquid Wrench because they may be seized due to the heat and corrosion. You will need a 1/4 " drive ratchet and a short extension with a 10 mm socket to remove the three bolts. Once the heat shield is removed, look down between the exhaust manifold openings, to the left side, and you will see the location where the thermostat housing is attached by two bolts. Using the 1/4" drive ratchet, an 8 mm socket, and multiple 1/4" extensions, you can reach both bolts. Remove the two bolts and the thermostat housing will drop down allowing access to the thermostat. Reach down around the rear of the exhaust manifold and feel for the thermostat. It will likely be stuck in the upper housing. Remove it along with the rubber seal. Take a new rubber seal and coat it with a silicone grease and install it around the outer edge of the new thermostat. With the pointed end of the thermostat pointing down, place the thermostat and seal into the lower thermostat housing. ( You need to be sure that the thermostat cylindrical side is toward the engine when installed.) Depending on your height, it may be easier to do this from beneath the vehicle. Raise and safely support the vehicle and crawl back underneath ad raise the thermostat housing tube into position. While holding it there, re-install the bracket bolt. Next, lower the vehicle back down and then re-install the two thermostat housing bolts. If you are replacing the heater hose quick connector, which I recommend once the vehicle has overheated because it is made of plastic and may have been weakened, follow the 3/4" steel tube from the top of the thermostat housing toward the drivers side and you will come to the connector. Pinch in the two side clips on the outside of the connector and slide it off of the end of the tube. Next pull the hose up and remove the clamp and connector. Using a small amount of silicone grease, coat the inside seal of the connector and reinstall it in the hose. Tighten the hose clamp, move the hose back down into position, and then slide the connector onto the tube until it seats. Next, set the heat sheila back in place. Take the three bolts from the heat shield and apply a small amount of anti-seize to the threads. Reinstall the three bolts. Now you are ready to add your anti-freeze and water mixture to the reservoir. Once full, replace the reservoir cap and start the engine. Let it come up to operating temperature and check for leaks.
Good luck!

I need to know the right way to change my thermostat.

The procedure below and a picture of the location for you.

Roy

1. Disconnect the negative battery cable.
2. Drain and recover the coolant. Refer to Draining and Filling Cooling System.
3. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Replacement.
4. Remove the coolant inlet housing bolts through the exhaust manifold.
5. Raise the vehicle. Refer to Vehicle Lifting.
6. Remove the coolant inlet housing stud from the oil pan.
7. Remove the tire and wheel assembly.
8. Remove the splash shield.
9. Remove the bolts from the transaxle-to-engine block brace. Remove the brace. Refer to Transmission Replacement in Transmission and Drivetrain.
10. Remove the coolant housing pipe.
11. Remove the thermostat.
12. Clean the mating surfaces.

would you be so kind as to advise me how much the mechanic would cost to replace the thermostat on the 2000 Pontiac grand am parts and labour, do you have to take out the intake manifold (2 1/2 hours labour) to get to the thermostat?

What they are telling you is correct. The part should be around 10.00 and then you will need to replace the coolant. I would recommend that you have the cooling system flushed at the same time you do the thermostat.

thank you.

Glad to help.

You know, I was thinking about your vehicle and the more I thought, forced me to look up the directions in the manual for the 3.4L V6. The shop has to remove the cross over pipe, but not the entire intake. Here are the directions from a manual:

3.4L Engine
Drain the cooling system.
Remove the air cleaner.
Remove exhaust crossover pipe.
Disconnect the surge tank line fitting from the coolant outlet.
Remove the thermostat housing to intake manifold bolts.
Remove the thermostat housing outlet and thermostat
Clean the mating surfaces.

To install:

Install the thermostat and housing outlet.
Install the thermostat housing bolts. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
Install exhaust crossover pipe.
Connect the surge tank line fitting to the coolant outlet. Tighten the fittings to 15 ft. lbs. (21 Nm).
Install the air cleaner.
Fill the cooling system.
Inspect the system for leaks.


I hope this helps.

where is the thermostat located

find the upper radiator hose and follow it back to the engine, whre it connects is the thermostat housing it is usualy held on by two bolts, remove it and you will see the thermostat, if you cant find it at the upper radiator hose, it may be at the end of the bottom radiator hose.

Where is the thermostat located and how do I replace it?

follow upper radiator hose to engine will find thermostat cover,take hose off and remove any electrical connections or hoses and remove bolts or nuts,if stuck tap easily and remove thermostat and replace making sure new thermostat is right side up do so by looking at old one when taken out,install new gasket making sure housing is cleaned of old gasket retighten nuts or bolts add new antifreeze.

Where is the thermostat located and how to remove it. Thanks

Follow the upper radiator back to the engine. It will end at the thermostat housing. Disconnect the battery, drain the radiator, remove the upper rad hose from housing, remove the two bolts that hold the housing in place, remove, clean old gasket material, and replace. NOTE: Pay attention to how the thermostat is sitting so you can replace it sitting the same direction.

Reverse procedure to replace.

Engine Cooling problem
1998 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic

I would like to know how to replace it. picture please

Thanks

Disconnect the negative battery cable. CAUTION: Refer to Battery Disconnect Caution in Service Precautions. Drain the coolant to a level below the thermostat. Recover the coolant. Refer to Draining and Filling Cooling System. NOTICE: When adding coolant, use DEX-COOL (R) coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50,000 km (30,000 mi) or 24 months. Remove the air inlet to the throttle body. Refer to Throttle Body Assembly Replacement in Powertrain Management. Disconnect the surge tank inlet pipe from the thermostat housing. If the coolant outlet is being replaced, disconnect the radiator inlet hose from the coolant outlet.

i got a 1997 pontiac grand am and i think it is a 4 cyl. but it is a 2.4 L i need to change the thermostat but cant find it ????

hope this help's

I'm having trouble removing the thermostat from the engine. There is a metal line that looks like it doesn't move that runs into the housing, should I try to move this, and if so, how?

Remove the pipe see diagram. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.