Quoted from member viperjuice (in reference to 2007 Tahoe) on http://www.chevroletforum.com/m_2649/tm.htm
yo i got my 8000k diamond white hid's today.. oh wow they look awesome, wish you could figure out hwo to get them out huh..lol dude, on the driver's side, pull the rubber cover off "has 2 clips holding it on the top", oh yeah the cover behind the light. and you unplug the plus and then twist the bulb and it comes right out.. easy.. on the passanger side, pull up on the entire air box, it pops right up. just take the hose off after the mass air flow sensor and unplug the sensor. there's a cover behind the light on this side also.. take the two top clips out and just move the cover out of the way. unplug the light, then you twist the light pull it out a bit and turn it so the plug faces down again and it comes right out. its actually really easy, just leave the assemblies in the truck.