[timrice]

Ha. Not so fast!! The car worked fine for a couple of days after I unhooked the third-party remote's power cable. Then it was back to the same old problem. The only other thing I had done was temporarily disconnect the battery's ground cable while I did that.

Since then, I have found that I can make the car work normally again temporarily just by disconnecting the battery ground for a couple of minutes and reattaching it. But the problem always ends up coming back. I took the battery out and had it tested. It tested good. I put the battery back in and sure enough, the car acted normal for a while. It's almost like something is being allowed to discharge when the battery is disconnected and somehow that's permitting things to work normally for a bit. Often, I can shift into reverse and that will cause the car to work normally again, but only for a few seconds.

I found a group of grounds under the rear seat and another pack of them under the plastic trim on the driver's door jamb...those all look good.

I still haven't figured out where the actual third-party remote's electronic module is.

Bottom line, I'm still looking for the REAL answer.