My Power window on my 2003 GMC Sierra 1500 Truck

how to open radiator drain valve how to open radiator drain valve

Im not sure if newer vehicles have this and even if they do, it's a dangerous task that you dont break something. BUt is usually located on the bottom or the inside bottom of the rad and is a plastic black or white plug with a flat tongue on it. IT's easier to loosen the bottom hose but may had to wriggle it around a bit, generally a small flat screwdriver to get under the hose to free from the rad support but be gentle on the rad area. I cut the end off with a drain pan or two and old carpet for spills and that stuff is poisonous and tastes sweet to animals so be careful there. Follow proper procedure for getting air out of the system (rock car, squeeze hoses, turn vehicle on while filling. allow thermostat to open and see flow of fluid, rev up and down 2000 to 3000 rpm few times...Sometimes there is a valve on top of the thermostat housing. When open fluid and not air shoulld come out, allow any air to espcape. Check that the vehicle is giving lots of heat otherwise an airlock is occuring and will damage your engine. Refill when cold after assuming all is in order. Use distilled water @ 60/40water unless in either extreme climates add more antifreeze. Im not sure if newer vehicles have this and even if they do, it's a dangerous task that you dont break something. BUt is usually located on the bottom or the inside bottom of the rad and is a plastic black or white plug with a flat tongue on it. IT's easier to loosen the bottom hose but may had to wriggle it around a bit, generally a small flat screwdriver to get under the hose to free from the rad support but be gentle on the rad area. I cut the end off with a drain pan or two and old carpet for spills and that stuff is poisonous and tastes sweet to animals so be careful there. Follow proper procedure for getting air out of the system (rock car, squeeze hoses, turn vehicle on while filling. allow thermostat to open and see flow of fluid, rev up and down 2000 to 3000 rpm few times...Sometimes there is a valve on top of the thermostat housing. When open fluid and not air shoulld come out, allow any air to espcape. Check that the vehicle is giving lots of heat otherwise an airlock is occuring and will damage your engine. Refill when cold after assuming all is in order. Use distilled water @ 60/40water unless in either extreme climates add more antifreeze.