I am new to this forum so maybe this question has been asked and answered already. I have a 2004 Suburban Z71 and have lost the hot air on the driver's side. The passenger side blows hot air and the rear unit blows hot air. Any assistance would be appreciated. Thanks

 

Sounds like the door that blends the air on the driver side is either stuck or the actuator is Tango Uniform.

 

had almost the same thing happen to my duramax. it would just start blowin hot air when i was using the ac. never figured it out. i would shut it off and start it back up and after couple times it would work for a while longer. could be faulty switch or the door actuator. good luck with it

 

Any luck with this issue? The exact same issue is occurring with my 2004 Suburban Z71.

 

Yes--dealer charged $577 to fix it.

 

Glad it is fixed. What was the problem?