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cover plate located under the pass side dash. take cover off, might need a 10 mil socket.. locate heater core, remove the 2 hose clamps holding the in and out hoses on the heater core. remove heater core, place new one in place, and reverse the steps. add ac delco antifreeze . start car with rad cap off, and heat and blower on HIGH. after engine is nice and hot, recheck and top off fluid, replace cap and check for leaking.
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