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How do you replace the heater core on a 2004 Chevy 3500 express van?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
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