Heater Core Replacement

[josetizapan]

Ok so my denali has been taking a long time to warm up but i though it was cause we been haveing -8 temp outside in the last week but yesterday when i got out of work and turn my truck on all my windows got foged up especially the windshiled so that let me to belive that my heater core is goin bad.

My ? is how hard is to replace it i've been searching online and i found out that i have to take the whole dash off is this true?

I have a 1999 GMC Yukon Denali.

 

[FootinSD]

Been having the same weather not to far from you in South Dakota. My windows have fogged up bad a couple of times, but I made sure I cleared out the snow packed down between the windshield and the hood, and it helped out right away. Just my 2 cents worth...

The -8 temps will take a while to warm up these big rigs.

 

[mixtapesyndicate]

If you have to do that dash tear out to replace the heater core here's what I suggest:

bottle of jack and a warm garage.


May the force be with you when you do that one. I think its the only thing on my tahoe i would be willing to pay someone else to do.

 

[jdawg901]

i dont no too much about the denali but my 95 tahoe was easy just unscrew the heater box cover and there it is u might want to see if yours might be the same hardest thing was takin the hoses off but like i said its just a guess

 

[ravingmadman]

Painful, painful job. Extra bottle of Jack, just in case.

 

[99denali]

In the Denali theres an acess panel on the passenger side of the car so you dont have to take of the whole dash....im pretty sure. I had the same problem with my Denali and it turned out to be the water pump that was causing my problem.