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Re: changing thermostat in 1999 gmc yukon
Thermostat housing will be located top center of you engine it should have 2 bolts holding it down. Be carfull you may need to drain out some antifreeze before you remove ,and never remove while hot. Thermostate just sits inside this housing.make sure you install the new one in the same direction the old one is in.
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im guessing your question is how to install it its pretty simple follow you upper radiator hose to were it meets the engine the matal thing it is hooked to is your goosneck, take the upper radiator hose off of the goooseneck just to make it a little easier then you will take the two bolts of the goose neck and remove the gooseneck then take the thermostate out and replace it with new one make sure you install it the right way or you will have issues then replace the gooseneck gasket and reinstall the gooseneck onto the engine im not sure of the tourqe specs but i usually just tighten them down dont give them the he man strength but snug them down, then reinstall your upper radiator hose if you lost any antifreeze replace what you lost and you should be good to go. run the engine for a while and make sure your gooseneck gasket doesnt leak and you can runn the engine long enough in the yard to make sure the thermostate is going to open when your truck gets to operating temp, youll know it opens when your trucks temp stops going up and goes back down just a little, once that happens you know you are all set and it is good to drive
1. Make sure the engine is cool. 2. Using a clean bucket disconnect the lower radiator hose and carefully drain around 1 gallon off coolant then reconnect hose. 3. Follow the upper radiator hose to the engine where it's connected to the gooseneck on the engine. 4. remove the 2 bolts holding the gooseneck and lift it up to remove the thermostat making a mental note on how it was installed. 5. Clean both sides of the gasket surfaces, install new thermostat in the same position it was removed and replace O ring(only use a Motorcraft replacement to avoid having fit issues) alternate tightening bolts until tight. 6. Refill radiatior to proper level. 7 Leaving the raditor cap off, start the car turn on the heater and let it warm up keeping an eye on the coolant level, it will go down once the air works it's way out of the cooling system. 8. Top off the system and tighten radiator cap. Check the coolant level several times during the week, there may still be some air left in the system.
Hi, if you follow the bottom hose on your radiator to your motor, right where the hose goes is where the thermostat is. Its pretty simple to replace. Follow the hose that goes from the top of the radiator to the top of the engine. The hose is black flexible, roughly 1.5" in diameter. This hose goes into a "gooseneck" on the top of the engine, secured with a clamp. Remove the clamp and the hose, and remove the gooseneck from the engine. The thermostat will be located underneath the gooseneck. Simply lift out the old thermostat, install the new one, and replace the gasket. Reassemble. Take care
Follow the hose that goes from the top of the radiator to the top of the engine. The hose is black flexible, roughly 1.5" in diameter. This hose goes into a "gooseneck" on the top of the engine, secured with a clamp. Remove the clamp and the hose, and remove the gooseneck from the engine. The thermostat will be located underneath the gooseneck. Simply lift out the old thermostat, install the new one, and replace the gasket. Reassemble.
You are describing the engine mounts bracket and its not attached to the gooseneck(so you will be alright). You would have to loosen the alternator and remove the belt for better clearance to the other bolt. Hopefully this helps
Top center behind the top pulley. Follow the upper radiator hose to where it connects to the engine. I've always called that piece that the hose connects to, the gooseneck. So you take the hose off, then you take the gooseneck off and there sits the thermostat. Make sure you scrape off the old gasket and replace it with a new one. Also, don't try to run your van without a thermostat, your gas mileage will drop off the charts. We used to do that back in the day before all the computer controlled stuff when I lived in Florida. If I've helpped you, please remember to rate me. Thanks.