I have a 97 blazer 4x4 4dr. last week I noticed that the tuck wasnt heating up the cab as fast as usuall. then it wouldnt defrost the front window. today I noticed that there is antifreeze in the cab on the passanger floor. The coolent level hasent really dropped in the rad. and it is still pumping out warm air. The truck hasent over heated or showen any signs of overheating. Any ideas??

Thanks.
Pyle.

 

It sounds like it's your heater core. It's either blown or cracked, causing coolant to leak onto the floor. It's also the part that provides heat to the cabin, so that explains why you have no heat.
Do a quick search for "Heater Core" and you'll find lots of info about it where to get one and how to replace it,.

 

Yep, like sisk said its your heater core.

 

Very common problem. Unfortunately it is also a major PITA to fix. I still need to fix my heater core.

 

Yeah from what I understand the heater core is pretty hard to get to. You have to tear almost the entire dash out to get to it.

 

thanks guys. my wife drives it and with the window not defrosting it is very dangerous to drive, so i transfered the insurance to our car for now.

Thanks for the info!!

 

*Moved to 2nd Gen Tech*