I just removed non-OEM HID's from my SHO as I am done with aftermarket HID/LED light bulbs.
I confirm what 92BlackGT stated:
For the 2010, DRL equipped vehicles (Canadian) come with halogen - 9005, non-DRL are HID - D3S.
Replacing the light bulbs is very simple just a bit hard to reach. Just remove the boot, rotate the light bulb counterclockwise and then replace it.