1997 Z71A few days ago my fan speed control and everything else on the climate control station quit working. No response from any buttons, no little yellow light on the recirculate button, no heat and no a/c at any fan speed , nothing works.
I'm assuming it's a relay? Just curious where to start, I know enough to check fuses and such, I'm assuming it's the dash unit itself, or the relay behind it. Any help is much appreciated 👍👍​​​​​​​​​​​

 

Could be a relay, or a bad climate control cluster or even corrosion somewhere.

 

I would definitely suspect the part in the dash, but mainly the ground or power going to it, since the whole thing is no longer working.

 

So I went to the parts store, set in the parking lot and replaced the climate control module, the blower motor relay and the blower resistor behind the glove box.
The only change is the two little yellow lights on the a/c and circulate buttons are back on, so I know the new module is getting power , and the old module is not working,
However the fan speeds are still not working , same issue nothing is coming on. Could it be the blower motor itself ?
All fuses and relays both under the hood and Inside are good

 

Yes, it is very possible the blower motor is bad. You can check and make sure it is getting power by putting a volt meter or a test light between the two power leads. As you may know the blower is on the passenger side, behind the glove box. If you remove the glove box (open it then push in the sides) you can find the two wires that go into the blower motor. If you have power and ground, your motor is bad.

 

Twas the blower motor, works great now

 

Good to hear, glad it was something simple!