brake problem

[cumminspwrram59]

i got a problem with one of our work trucks. itsa 01 3500 chevy and it pulls real hard to the right when you step on the brakes is this an abs problem or is it a rotor bad? i test drove it and from 60-30 mph brake it stayed straight as an arrow but at real slow speeds it pulls hard right any ideas?

[auto2010]

do you have an ABS light on?

[ArizonaRedneck]

check and make sure your caliper isnt hanging up on that side and if it is look in your parts store for some caliper grease made for these problems

[cumminspwrram59]

abs light is not on put the computer on it today and took it for a ride rite around 6mph the left front wheel speed sensor goes from 6 to 0 while the other ones slowly go down i ordered a wheel speed sensor so when it comes ill find out thanks for the help

[auto2010]

yea sounds like the sensor is feeding the abs module faulty info. so the abs in that one wheel might be kicking on while the others dont causing it to pull.