Does anyone know a place to find the replacement LED tail light bulbs besides GM? In Canada they want around $90 for a single bulb which is way more than what I am willing to spend on a bulb. Can the bulb be bought directly from Osram?

i recently purchased mine from streetglow.com, i paid 35 bucks for two of them

http://streetglow.com/site/auxlighting.leddomebulb3156.php here is the exact link, you need 3156 for the taillights and for the reverse im not too sure, check in the manual, hope this helps and yes, these led bulbs are great quality

Thanks but those are not the bulbs that I am referring to. I want the factory Joule LED lamps.

I'm not sure where you would get them, but... if it is out already, that is a problem that GM should fix under warranty. Those LEDs are designed to last for YEARS... so them going out in a matter of a few months is a warranty issue.