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heater core replacement

2001 Views 10 Replies 6 Participants Last post by  Brian01
OK, I've been reading the forums for a while now with regard to changing out the heater core, now that it's getting cold the time has come to change it out. I have the fog/mist coming out of the vents and the top radiator hose is stone cold even with the temp gauge reading 190* so i think its time to swap it out. Pass side floor is dry but if I turn on the defroster the windshield gets coated with antifreeze film. I was wondering if this job has already been done on my truck? I'm the third owner and it has 140k its a 1997 2500 4x4. The reason I ask is that I already have heater hose running from the engine hard lines directly through the firewall and I wasn't sure if this indicates that someone has already been in there? I thought the heater core hard lines would have come through the firewall and been connected with heater hose under the hood from the core lines to the engine lines?
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I too replaced my heater core without cutting the new heater core inlet/outlet tubes. I did cut the tubes on the old heater core just to make it easier to remove but the new heater core had adjustable tubes and it was a bit harder to put in but it can be done. I got my heater core with adjustable tubes from NAPA.
If you have a cracked dash board this would be the time to change it too.
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