Well this is where the "fun" begins. I'm with one of the mode control motors, do you have a volt meter to take some readings?

 

Yes, have many.

 

So, what do I measure?

 

Sorry, been behind on reading

I was wondering where this went.

First...I have to ask when the last time the cabin air filter was replaced?

Then see this pic. The mode control is on the drivers side....your are going to have to get your head down by the gas pedal.

Again sorry for the delay.