OK...
First the Radio stopped working altogether. At the same time the Dome Lights, Headlights, and Door Locks all stopped functioning unless the key was in the Run position. The IOD fuse was bad. I replaced it. I thought I was done...

Since replacing the IOD Fuse I have a new problem: The door locks on all doors work exactly as expected with RKE or the switch on either front door when the key is not in the ignition, except the lift gate - it only un/locks with the key.

With the key in the ignition the door locks on both sliding doors go nuts. They constantly try to lock, only lock - BBBBbbbRRRRrrrrrrrrrrrrrrrrrrrrrrrrr...

It takes anywheres from three to ten seconds for the locking to begin. It stops if the door is opened (of course). Each door is individually effected i.e. either door can be open and the other continues to exhibit the symptom.

I imagine that the lift gate not working at all is a symptom of the same problem.

The BCM is relatively new and has the flash update.

Somebody? Anybody?
I need help.

 

You may want to replace the sliding door ajar switches and reck. As far as the liftgate, remove the panel and inspect for a loose wire or bad actuator.

 

I can certainly try your suggestions but, while it is not impossible, it would be surprising to discover that both door switches failed at the same time.

Is there anything that is common between them that could affect only these two switches.

For example, if the Lift Gate has a bad ground could that cause the sliding door locks to fail?

 

Update: I am even more confused!

I removed this statement and created a new question from it since, while possibly related, it is a different issue.