you dont, a mechanic does
leaking heater core
Try the repair tips on the Autozone web site.
it is on the passenger side right next to the windshield under the hood it is black and has a purple and black wire connected to it
how do you change the heater core on a 99 cadillac deville? I need to know, "Kaiser."
First thing to check is coolant level in radiator ( not the overflow jar ) , NO HEAT. If you are savvy, feel heater rubber coolant hoses going into and out of heater core. If neither or only one of them is warm , PROBLEM. Open radiator cap ONLY when cold to check level. Make hose temp check at engine operating temp. It could be a bunch more problem . but these are the obvious, and first ones to check. Good luck
Disconnect both heater hoses from heater core and connect them together
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a diagram or a picture of where the heater core is in 1995 cadillac deville is
How do I replace the heater core in my 98 cadillac deville
97 cadillac deville heater controll