Sticky

So I'm new to the forums - just found the site today as a matter of fact. Anyway, I recently purchased an '04 GP GTP (Had a '96 SE years ago, and loved it. So decided to get back in to Pontiac). I have several issues with it. The first is the ABS/TC lights which I know is a result of my failing wheel bearing. I have constant trip computer error messages popping up as well as regular signal light failure (I've replaced all front and rear twice now inside of 6 months). I checked voltage, and It's not exceeded 12V to any of the bulbs, so I don't know wtf is goin' on. Some insight please? I should mention that I'm 23, and not blessed with phenomenal mechanical inclination. Thank you