First of all....have patience.
Obtain a repair manual (NOT CHILTON) from a auto parts store and begin. It will come out from under the dash.How to change a heater core in a 1997 pontiac grand am.?
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if not ac eqiped if it has ac dash needs to come outHow to change a heater core in a 1997 pontiac grand am.?
if you have to ask, better take it to someone who knows what he's doing. You could mess more up than you'd fix, if you don't do it right.
