TylerZ281500
Yukon Ridin High
so on the side of your radiator on the driverside lower area theres a nipple on the side where you attach a hose, i remember using it awhile back but its not working for some reason, your just turn the key type thing correct? i know it sounds stupid, reason i ask i need to drain my coolant i had stuff put in to see if it would seal off the leaking head gasket and it seems as though it worked. im going to run the truck for awhile to see if any air bubble are coming through to the radiator and if not i will be draining it as well as replacing the coolant temp sensor.