A/C and Heater Issue

[MTO]

Hello, new to the site. Having an issue with my 1997 Tahoe. When on air or heat after awhile the blower continues to run but the air does not come out of the vents and will not change if you change the setting on the panel. The blower is running but no air exiting. Any thoughts? Control panel or vent door actuator? Thanks.

 

[WiCK3D_SiX]

Pull your control panel out, I had a similar issue and it turned out the unit was cracked and the knob wasnt actually turning the control shaft. I repaired the broken areas and made sure the knobs were seated properly and havent had an issue since.

Not sure if thats a common thing, id assume not but worth a look either way.

 

[SeriousSide97]

either that or go get a new heater control panel at the boneyard. should fix ya up