hey gang got a 2002 chevy venture van and need to change the antifreeze did not find a petcot valve to drain the antifreeze that is in the system can anyone shed some light where this is located and seems like the radiator cap is not on top of the radiator so how do i refill with the fressh antifreeze the next thing is where is the bleeder valves located to purge the air out of this thing thanks alot any help would be great it is getting alittle cold up here in n. e. pa. and do not want to freeze the block thanks again
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