Do I need any special tools for replacing a wheel bearing on my '97 gp? I have a bad ABS sensor. I've never replaced one before. What are the steps? Looks like I need to take the wheel nut off then the three bolts on the knuckle but I'm not sure where to go after that. Will a code reader tell me which sensor is bad or is there any other way to tell? The abs light, check tire pressure light, and low traction lights come on after a minute or two of driving and then I have no ABS. I've been told this is a bad abs sensor.