Difference Between CD Changers?

[TxTruckMan]

OK. I'm buying the pieces for my Non-Lux TNR upgrade and have a question about the CD Changers. I know that I have to use a CDX with the metal tabs on the side, but I've been noticing some significant price differences between even those.

 

P/N 15055250 doesn't come up on GM Parts Direct website. I assume it's been superceeded by 15122617. It lists for $608 and they sell it for $300.

 

Then I found this CDX on eBay, also with the metal tabs (p/n 15110393).

 

eBay Item

 

The response to one of the questions listed in the description states that it's from a 2005 year model of some sort. It's also listed on GM Parts Direct, but lists for $412 and sells for $206.

 

So what's different between these two units? And which do I need to buy for my 2003 Yukon with Non-Lux Bose system? Thanks for the help.

[masterp2]

My understanding is the class II data bus is the difference, in the later years, 03 forward. Lux or non-lux, no diff. Metal tabs for you.