I have a problem on my 01 1500HD 4wd truck. the ABS and the parking brake light will come on at the same time. This happens almost everytime I drive down the street. But it doesn't come on right away. usually 2 or 3 miles down the road. Anyone have this problem? I believe it is a bad ABS sensor. Does anyone know how to tell which sensor is bad?

 

Could be a number of things, but corrosion on the front sensors is very common. Not sure about the HD's, but I got a recall notice for mine. The dealer replaced one front sensor and cleaned the other. There's also a common problem with the ABS module shorting out, but if that was your problem you'd know it right away...the light would be on all the time and the ABS actuator motor would run constantly.

 

Check to make sure the e brake cable return spring isn't against the abs wiring. I had a truck that kept setting lf wheel speed sensor codes only when it rained. The spring rubbed a hole in the insulation shorting out the speed sensor.

 

I will check, thanks for the info.

 

yup just be glad you can't hear a little motor underneath your truck. I had my abs module go bad and $450 later it was fixed. That was doing all the work myself too.