Update and another question.

Well, still no heat. After further research and testing, it is leaning towards the actual ccc in the dash.(not sure what to call it, but I'm sure most of you know what I'm talking about) I tried getting one from a pullapart and luckily did find one that actually matches part number and all.

Before, nothing was working, no heat, a/c, not even my rear defrost. Now that I tried replacing it with a used part, the rear defrost will work, and I can hear it cycling through all the directional vent settings.(which is wouldn't do before) But, still no heat, or a/c, and the blower won't even come on.

Couple of questions:
1: Any way to test the ccc module from the dash to verify it's all working?
2: Anyone know of where I can verify which part numbers are compatible? I have found a few items, but can't verify if they will work on my truck.

Thanks again guys for all the help you have been.

*edit* After more searching around here, I found the whole dead battery, pull RDOBatt fuse reset problem. Never thought about that possibly being the issue. Did that, and as I already said, everything seems to work now except now actual heat or a/c blowing. I know the motor is good, as all are the fuses....any other ideas guys? You don't think it would be an actuator(sp?) problem now would it?

 

Thanks for your help gang....ended up being not only the ccc, but I also had a loose connection to the motor. So, I now have heat!

 

plug in 2-wire pin connector plus old style spade connector on 98 blazer w/acc. 12 volts on purple pin . I have nothing on black pin,not even ground. The spade does read ground . what should the black pin read.?

 

chevarado, you need to start a new thread, nobodys going to find you down on page two of a year old problem