What's the life expectancy on the OEM bulbs for the fog lights on an 08 CTS? I have a 2008 CTS (delivered in 9/07) with 51k miles. Noticed when I got home tonite that the passenger side fog light was out. Going to take a look tomorrow in the daytime. Hopefully its just a dead bulb and not a short in the wiring. The only reason I would think of a short is that I was driving in the heavy downpours on Sunday plus with all of this winter road salt that's been laid out over the past couple of months.