GMC Yukon Blower Fan Speed

The Hvac Blower Runs At Slow Speed Only, Regardless If The The System Is In The Auto Mode Or If I Use The Manual Fan Control.

At First The Fan Would Only Blower At High Speed But Know It Sometime Does Not Work At All I Found The Answer That It The Resistor Located...

My A\c Fan Control Is Blowing Very Erattic. If U Turn The Fan Speed On High It Might Not Bloe But Very Low. You Can Turn Off The Car And...