check eng, trac control,abs light on

I have a1999 regal ls 50k everytime I hit a bump in the road the check eng, traction control and ABS light come on. It stays on until I shut the car off....When I re-start the car the light go out....Any ideas???

Check the electrical connector and wiring to each hub (total 4). Make sure they are tight and no damaged wiring especially where is runs along the lower control arm and to the backside of the hub. Another possibility is a bad wheel sensor within the hub/bearing assemly. You could get it scanned with an ABS capable scanner to see if any ABS/traction control codes are stored.

And welcome to AF.

HI, I think I may have narrowed it down, I was in my driveway with the engine running when I opened the drivers window, when the window stopped the lights came on. I am going to unplug the switch and drive it to see if the light comes on,,,...what do u think?