GMC HEATER NOT WORKING

Heater Problem 1997 Gmc C1500 6 Cyl Two Wheel Drive Automatic Heater Fain Can Not Be Turned Off. It Runs At Full Speed Upon Starting...

Heater Problem 1993 Gmc C3500 V8 Four Wheel Drive Automatic Winter Is Comming Up And After Freezing Last Winter I Want To Be Warm. My...

Fan Will Only Work On High Setting Will Not Work On #1 Thru #5 Setting

My Heat Is Not Blowing Out Correctly. I Have It Turned Up To 5 An It Is Barely Blowing Out. I Have A 2005 Gmc Envoy

I Drive A 1998 Gmc Yukon. The Front Heater Stopped Blowing Out Air. (You Can Feel The Warmth Or Cold Seeping Out, Just Not Blowing) I...

Number 5 On The Heater Control Doesn't Work. One Through Four Works Fine As Do All The Other Features. I Used A Test Light On The Electrical...

1991 Gmc 2500 4x4 114000 Miles The Heater Has Quit, Engine Gages Inop, Speedometer Seized Up, And Four Wheel Drive Will Not Engage....

Selector Switch For Changing From Floor To Dash To Defrost Doesn't Work. Is There Any Common Reason For This Condition?

Blowing Cold Air.

No Display Lights Coming On. Just Blows Cold Air?