My truck is having the same issue. How many restarts is a couple? I have started and stopped my truck 10 times now and it still won't work.

 

Disconnect your battery, wait a minute, hook the battery backup. start the truck and DO NOT TOUCH A F'ING THING on your heater controls for at least one minute while everything cycles. Only then after it's done change your controls. If it's still having problems, have the BCM reflashed at the dealer. If that doesn't take care of it you more than likely have a bad actuator on the blend door assemblies.

 

Giving that a try now....................

 

Oh F%#@ Yeah, It Worked!!!!!

 

 

Now since it works, if it starts acting up in a week or so, you'll either need to reflash the BCM -OR- replace the blend door actuators. Good luck. Mine was doing the same thing and resetting the battery wouldn't fix it. The BCM reprogram did however. I got lucky. I didn't feel like tearing a dash apart.

 

Disconnecting the battery does cause the actuators to go brain dead but I've never found the problem to actually be control head related. Everyone of them I've ever had go dead after a battery replacement I've gotten to work again by recalibrating them with the Tech 2 or sometimes just smack them hard enough with a rubber hammer, screw driver handle, anything handy that knocks some sense back into it. You wouldn't think it would work but it does. I've brought some back to life by hitting them that even the Tech 2 recalibration couldn't budge.

 

The actuators can be calibrated with the Tech 2 to fix this issue also.