Funny enough, I bought these off of Ebay:
Tire Pressure Monitor Sensor
and 3 of them worked right off the bat, one gave me issues. So I figured I'd get a "real" one to fix that.
I got this one from amazon:
It came in a mopar bag and everything, and this one doesn't work either??
I went to the dealer, to see if they maybe needed to do anything, as the guys at discount tire were saying that it scanned as being OK.
The service guy took my car, came back after 10 minutes and said, that it's probably because my tires, LT 275/65R18 Duratracs, were set too high, at 42 PSI, so the system malfunctions because of that. So he did me the service of deflating my tires to the "proper" 36 PSI, haha!
Thanks, I guess??
So, I'm now back to square one, with two different new sensors, and the original 56029398AB not working...
And yes, the TPMS did work with the OEM 20's that I have since sold.
I guess the one option I have is going to the dealer, buying a $$ensor at OEM price and having them install it, to see if the receiver is maybe broken.