I have a 04 trailblazer and I don't know if anyone else has this problem, but some of the switches like the door window switches for example will not light up when the rest of them do. I have talked to the dealer parts department and they say you have to purchase the switch, that you can't replace the bulbs in the switches. I don't know about you guys but a light on the window switch is not worth the cost of a new switch, when the function of the window switch works just fine. Has anyone had this problem and or know how to repair the old switch lights? Thanks.