abs light

I have a 97 Grand Prix that when you hit a bump in the road the ABS, check tire pressure and traction off lights come on. They will stay on until you turn off the iginition, then restart and its back to normal.
Anyone got any ideas on what the problem is?

Sounds like one of your wheel sensor wires are bad or a wheel sensor plug is loose. Could even be a wheel sensor going bad. Could start by checking to see if all the plugs are tight and not hanging.

My trac off light is on and so is my ABS light but not low tire pressure and mine is do to the trac/ABS modual being bad but i dont know if that has any thing to do with the tire pressure light.

Steven M,

I agree with C6chris that your issue is most likely a bad wire/connection to or the wheel speed sensor in the one of the front hub bearings.

Buff6116,

The tire pressure light is triggered via the wheel speed sensors due to the difference in rotating speed of a low tire . Not all Grand Prix's are equipped with tire pressure monitoring, so your car may not have this function.