Diesel Place banner

ABS help

730 Views 10 Replies 5 Participants Last post by  Spitz
On my recent purchase of a 1998 K2500 I have discovered that the ABS brake system is not working. Someone took the ABS fail indicator lamp out of the instrument panel so I didn't know they didn't work. I have no computer codes on the ABS but the light is now on (working).
Some said that the front wheel sensors should read about 1500 ohms each, I tested each side and they are open. They also said if I spin the wheels by hand I should read 250mv AC I think, but I have not had a chance to try this. I seem to have power at the wire terminals, so it appears they should work. Any thoughts on this?
If anyone can steer me in the right direction, I would appreciate any help or leads. The conventional brakes work fine BTW, just no pulsing in the snow/ice on lock - up.
Thanks In Advance
1 - 2 of 11 Posts
Is the ABS fuse installed?
hey..before you replace sensor...be sure the mounting pad isnt corroded. Believe it or not, this is a recall on 99 and newer GM trucks/SUVs. The smallest amount of surface corrosion lifts the sensor ever so slightly...poor/no signal. Ussually intermittent thought...ussually wont even light the ABS light. Sounds like you may have a good diagnosis...just want to maybe save you some cash for an easy check.

Pull sensor...clean mounting area....antiseeze the area and reinstall.

Good luck!
1 - 2 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.