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you need to unbolt the front plate of the dash ,, then theres a cover on the heater core , that needs to be removed , then the heater core is bolted up there and , should come right out after unclamping hose ( located on the outer firewall-- under the steering rack, . kinda tricky to get back into position but it can be done . after back in , just re-install all plates and covers -DONE

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8y ago
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Q: How do you replace a heater core on a 1997 Grand Am?
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