Dual Climate Control Problem
 

I have a 2007 Silverado 1500. Starting last summer, the dual climate control will intermittently 'flip' on the driver's side and blow hot air when it should be cold or cold air when it should be hot. This only happens on the driver side. Took it to a dealership; they said it was the actuator, replaced it but the problem is still there. If you turn the truck off most times it will fix the problem temporarily, but it seems like once it starts happening on a trip, it tends to keep happening. I haven't found a TBS about this issue and hesitate to go back to the dealer to get dinged for another $400.

Thanks for any assistance!!

Denise in Dallas