Mode actuator for A/c

Walkercraig01

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Does anyone happen to know which mode actuator is for a 99 Yukon. My air is stuck on defrost in the front and I have seen a few different ones. Thanks guys
 

Eman85

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It's the actuator just above the gas pedal. They usually have a tag with a part number on them. You can observe it while you move the controls and see if it's moving. If your dash deteriorates and cracks at the defrost vents parts of it can cause the door to stick.
 

OR VietVet

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If you list the last 8 digits of your VIN and ask @915_Tahoe nicely, he can likely supply part number and then do the search. If available, always use Genuine GM or AC Delco parts.
 

east302

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Mode and temperature (heater) use the same actuator. As mentioned above, see if it’s actually turning (there’s a notched silver position indicator dial on it) or if the connected linkage arms are intact.

Here’s the GM and Delco part number:

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