QUOTE (Joe1129uscg @ Sep 12 2011, 02:58 PM)
QUOTE (Gary P @ Sep 11 2011, 08:33 PM)
QUOTE (Joe1129uscg @ Sep 11 2011, 02:07 PM)
The ABS activating just before stopping is caused by loss of signal from the hub to the ABS system, to the computer it appears that a wheel or wheels have locked up and cut pressure to the system.
Either a hub is bad or there is a break in the wiring somewhere.
Joe - Could the loss of signal also be related to the recall that GM did a while ago? It was for corrosion between the sensor and the hub, and affected most trucks in the nothern climates, where salt is used on the roads. Probably better to just replace the hub, instead of just the sensor, huh?
Never heard of that recall, supposed to be a sealed unit...how does salt get in there?
Ive found that replacing only the sensor has always been pointless, never fixed the problem.
QUOTE (diggla @ Sep 12 2011, 01:53 PM)
Is it possible to switch sides on the speed senser and see if the code changes to same issue but.other side now?
Joe - There was a recall, probably 4-5 years ago or so..... I believe it was restricted to the "salt belt" areas of the country. The "fix" was for them to remove the sensor from the hub, clean the mounting surface, and reinstall the sensor. I had it done on my Siverado ('02 model year) under the recall.
Eventually I had to replace the hub anyway, but the dealer fix worked until the hub went bad. When I initially looked into replacing the sensor, I found the cost of a new hub including the snesor was only a few more dollars than just the sensor! Back then, a few years ago, I found the sensor listed separately at the local parts store, but it was almost $90, so I figured it was better to replace the hub assembly. Now when I checked, I no longer see the sensor listed separately..... Hmmmmm.