Could someone confirm how to get to the front turn signals? Seems you have take all the plastic covers off below and in front of front weeks to get to the signal lights.

 

According to my 05 CTS Service Manual "Headlamp Assembly or Headlamp Bulb and/or Cornering, Sidemarker, Park, Turn Signal Bulb Replacement" involves removing the front facia. But I don't think thats necessary since the turn signals are down by the fog lamps. To get to the fog lamps you just need to remove the lower air deflector. Let us know how it turns out. Mike.