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drain coolant through petcock at bottom of radiater remove plastic cover on core suppoet remove upperhose then lower hose then the 4 10mm bolts two at top two at bottom slowly and cafefully finangle it free and remove from car repeat process for new one
i have a 1995 chevy 5.7 350 out of a suburban in a 86 chevy pick up an its over heating i done replaced water pump,thermostate,radiator,all new fluids an replaced clucth fan to striaght fan an its still over heating an no bubbl;es in radiator either can sum one please help me fig this out please
Place a drain pan under the petcock.
Slowly turn the petcock CCW
Be careful to avoid contact with the flow if the car is hot
Open the petcock several turns until the flow is constant.
Remove the radiator cap to allow air into the radiator
once flow has stopped, close the petcock.
There common to break off, you can pick up the replacement drain plug at NAPA and buy a stud retracter to remove the drain plug. if the plug is not leaking, Leave it alone and to drain the radiator, just disconnect the lower radiator hose on the opposite side of the radiator.
Good luck and hope this helps you on your project.
Look on the bottom of radiator by the bottom radiator hose it should be right next to it or around on the side of the tank at the bottom, it could be on either side of radiator left or right tanks, its just a little plastic tab you turn you might stand a better chance of finding it from under neath the truck, for myself i always found it easer to just pull the bottom radiator hose off to drain it, but it can get a little messey.
Well usually the center is setup for just the square end of a 1/4" rachet (used with a short extention). Look at the end and see it it has a small square hole in it. I'm not sure who told you to take the hose off, and I know you dont want to hear it, but that is great advise. GM petcocks are plastic inside and out. They get eaten up by the antifreeze as it ages and frequently break. Thats major trouble, depending on the break, it could mean a new radiator. The hose is messy, but the way to go. I will not allow the mechanics who work for me to open most plastic petcocks for this reason.
Did you try to turn it clockwise if you were looking from the side of the petcock or counter clockwise?
I believe that it needs to be turn clockwise and you can use pliers to make it easier. Hope I helped. If I can help more just let us know thankyou for asking.