NO heat and winters quickly approching
 

I have a 2000 3/4 ton GMC 4x4 with 160K miles and am having a heat problem. The problem is that the fan blows but no heat comes out. So I have replaced the thermastat when the water pump went bad about 5K miles ago. Along with that I flushed the coolant at the same time. cheked all the fuses still no heat. This truck was a previous Florida truck and the heat did not get used that much if that means anything. Any help or suggestions would be great!!!!

RE: NO heat and winters quickly approching
 

the bad news....................heater core

RE: NO heat and winters quickly approching
 

Did the heater core resolve this issue. I've having a no heat issue in my GMC Sierra 2000 5.3L. My coolant level is fine, I feel heat on both heater hoses. But no hot air comes out of any of the vents.

RE: NO heat and winters quickly approching
 

Does your temp come off cold to warmish...or stone cold

RE: NO heat and winters quickly approching
 

That's not true. We Floridians use the heat for atleast a good whole month out of the year....... :D