I am looking for a replacement 4wd selector knob for my 06 trailblazer. My wife somehow managed to snap the knob off. I have tried to look on the net for one but am having little luck. Any help with locating a knob would be greatly appreciated. Ohh and if anyone has a trick to extract the broken off plastic from the knob left in the switch that info would be great, i was thinking a dental pick or somthing and prying it out of there. Thanks for any help.