How to change blend door actuator on a 2005 gmc yukon need illustration of how to replace blend door actuator

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Actually you can repair them I did mine it was switching to hot on its own I would have to shut the car off and back on to get cold back but I took the actuator off took it apart and the factory greased the thing so much there was a glob of grease that dropped down on the circuit board cleaned it off put it back together and it worked just fine going on the second year still no problem
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