Warning Lights

The abs, tc., and brake lights came on one night on my way from work. When started to loose voltage (due to an failing Alternator). It done this once before when i had the same issue three years ago. I changed the alternator and battery, everything went back to normal. Is it any way to get these codes cleared to see if it's just a hiccup in the system or a true issue? At this point just trying to avoid the dealer for something I probably can do on my own.

Most likely looking at a damaged abs module or possible damaged speed sensor due to the giant wheels on the vehicle. I would start there, and if it's then abs module, ebay has a bunch of guys you can ship it to for rebuild. I've used them, they are good

mine was the yaw sensor on 2006 pontiac gxp.