heater core replacment how tos?

[LordBear]

looking for a how to with pics...seen a partial one for a gmc on os but nothing for the tb.

 

[The_Roadie]

Nobody's ever done a thread. Edited: I was wrong. How could I have forgotten the definitive thread on the subject. Probably because it was on Trailvoy. I love that guy's writing! The manuals may help. As the joke goes, when they build a vehicle, they put the heater core on a little pedestal. And every other part hangs off of and hides it.

 

[Mooseman]

There is this one on the OS with pics that's pretty good. Removing dashboard and replacing evaporator - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum Although for an Envoy, it's basically the same. I used that when I replaced my evaporator. If you do it, could you take some pics and post a how-to here? Would be good if we had our own.

It was a one day job. Not as bad as I thought it would be. It does help to remove the center console.

 

[LordBear]

is the a/c going to have to be taken apart as well? for the heater core replacment?

 

[Mooseman]

Yes, same deal as changing the evaporator. You have to remove the complete HVAC assembly to get to the heater core and the evaporator.

 

[LordBear]

any idea on the correct part number or part for the heater core..when looking i see a few different models that say they go to my tb.

 

[christo829]

any idea on the correct part number or part for the heater core..when looking i see a few different models that say they go to my tb.

52495721 is what I got from the old site parts list for an 02. It looks like that number is outdated, but Rockauto still has it
noted as an alternate part number for the cores they have listed there. The other numbers you're seeing might be from
rear core listings.

Good Luck!

Chris

 

[Daniel417]

Thanks for the link mooseman. That was exactly what I needed.