GMC Yukon Heater

With The Heater On Full Blast Set To 90 Degrees, I Am Only Getting Cold Air Out Of The Front Vents. When Selecting Where You Want The Air...

I Had A Heater Core Hose Pop Off Because Of A Broken Fitting. I Replaced The Fitting And Then Tried To Pull Vacuum On The System With One Of...

My Heater Will Be Warm Until I Turn On The Fan, Then The Temperature Starts To Cool Off. The Rear Heat Works. I Have Checked The Coolant...

My Heater Is Currently Not Working And Was Told That The Heater Core Needed To Be Replaced. The Mechanic Currently Unplugged The Hose That...

Heater Will Blow Cool Air Sometimes.

I Can Feel Very Little Air Coming Out. My Back Air Works Fine The Only Thing Is That In Summer The Air Is Hot And In Winter Only Cold Air...

Heater ,will Not Work All The Time,engine Temp Shows 208, Heater Hose Hot On One Side Changed Thermostat.

Hi, My 2005 Yukon Is Not Blowing Warm Air When In The Heat Mode. It Will Blow Exceptionally Cold Air When In The Air Conditioning Mode...

Both Driver And Passenger Temperature Set To 90 But No Heat Is Blowing.

The Drivers Side Vents On My 2004 Gmc Yukon Denali Xl Won't Change Temperature, The Air Always Blows About The Same Temperature. Passenger...