Disabling ABS
Junior Member
Joined: Oct 2006
Posts: 402
From:
RE: Disabling ABS
ORIGINAL: mikepro
The ice and snow is gone and the ABS is kicking in randomly on dry pavement, enough to drive anyone nuts. It is the fronts that are acting up. Particularly the right front. Pulled the wheel to see if there was easy access to the sensor but it looked like you have to pull the caliper and the hub then remove the rotor???
The ice and snow is gone and the ABS is kicking in randomly on dry pavement, enough to drive anyone nuts. It is the fronts that are acting up. Particularly the right front. Pulled the wheel to see if there was easy access to the sensor but it looked like you have to pull the caliper and the hub then remove the rotor???
BF Veteran
Joined: Jan 2007
Posts: 3,946
From: GP AB CA
RE: Disabling ABS
You'll have the ABS light stuck on, and it seems that the cruise control is on the same circuit... I think the power assist on the brakes is vacuum, so at least they'll still be easy to work...
Super Member
Joined: Jul 2006
Posts: 1,202
From:
RE: Disabling ABS
GM has a TSB on this problem, and on some models a recall. You can check with a dealer to see if yours has one also
Someone can correct me if they know I'm wrong but I believe the front wheel speed sensors are built into the wheel bearing/hub assemblies and are not accessable without damaging the hole assembly.
The problem you are having is caused by rust bulding up on the mounting surface of the hub (between the hub and the wheel speed sensor(WSS). This forces the sensor farther away from the reluctor which makes a bigger air gap between the reluctor ring and the WSS and whenthe truckis just about to stop the speed signal drops off because the sensor is too far away from the reluctor to generate a signal, sothe EBCM (electronic brake control module) thinks the wheel is locking up and itactivates the ABS. Youremove the wheel,caliper,caliper bracket and rotor, and then a 5 or 6MM hex bit (allen wrench) to remove the bolt holding the sensor in...carefully remove the sensor with pliers and sand the rust off of the hub surface and check the mounting flange of the WSS for flatness...if it's flat clean and dry the hub mounting surface and paint it twice with a rust-inhibiting paint...let it dry and apply a thin layer of wheel bearing grease to the o-ring on the sensor and reinstall it. Repeat for the other side and you once again have great brakes with no warning lights and no wories of lawsuits if you have the missfortune of running over someone.....
Joined: May 2006
Posts: 74
From:
RE: Disabling ABS
The recall affects 1993 -1996 Blazer, Jimmy, Bravada, S10 Pickups, GMC Pickups, Chevy Vans inlc. Astro, GMC Savana.
http://www-odi.nhtsa.dot.gov/cars/pr...callsearch.cfm
http://www-odi.nhtsa.dot.gov/cars/pr...callsearch.cfm
Thread
Thread Starter
Forum
Replies
Last Post
magtec
2nd Generation S-series (1995-2005) Tech
5
Dec 2, 2006 01:37 AM
