[bbturbo]

I need some help with the steerins wheel position sensor which appears to be the problem that I have with my 99 chevy Tahoe. When I turn to the left at about 11:00 o'clock position the wheel feels like I hit a patch of ice, then resumes back to normal. I have ordered the part but need to locate the sensor. Any tips will be greatly apprechiated. Any resource will help.