My gf has a 2000 Firehawk Trans Am. It was parked for the winter and she just got it out last week. For some reason the ABS INOP light is on. It isnt on when you start the car, but when you start driving it and stop at a stop sign or something the pedal pulses like the ABS is activing then the light turns on along with the TCS OFF light and the pedal feels fine the next time you stop. What could this be? Is it a wheel speed sensor? or something else? Thanks again!