About a month ago I replaced the front and rear diffs. I cleaned the ABS sensors while I had everything apart. Afterward, I fired it up and still had the three amigos (which I have had for maybe 6 months now and was pretty sure was the shuttle valve switch), but now the TC would randomly freak out and lock down a wheel, the BRAKE light is lit, and the speedo works up to 50ish mph then drops dead until the truck is restarted. I pulled the ABS fuse which kept the truck drive-able, and just finally got a ABS Amigo. Initially it was pulling only a Shuttle Valve switch failure, but today I got this:

NOTE: I had disconnected the front right sensor to trouble shoot, so that is a red herring.

-----ABS Amigo Box V1 RSW Solutions LLC Copyright 2010-----
|* The information provided is without warranty of any kind.*|
|* IN NO EVENT SHALL RSW Solutions BE LIABLE FOR ANY LOSS OR*|
|* INJURY OR DAMAGES resulting from or connected to use of *|
|* this Information or Product. YOU HEREBY WAIVE ANY AND ALL*|
|* CLAIMS AGAINST RSW Solutions ARISING OUT OF YOUR USE OF *|
|* THIS INFORMATION OR PRODUCT. *|
--------------------------------------------------------------
1.--Current Faults---->
Active Faults:
064:Front Right sensor electric fail
114:Shuttle Valve Electric Failure
Logged Faults:
045:Rear Left sensor output low
046:Front Left sensor output low
047:Rear Right sensor output low
064:Front Right sensor electric fail
Rear Left Sensor Bad Output
Front Left Sensor Bad Output
Rear Right Sensor Bad Output
114:Shuttle Valve Electric Failure
<-END Faults
------------------------------------------------------------
* *
------------------------------------------------------------
..--Previous Faults--->
Active Faults:
114:Shuttle Valve Electric Failure
Logged Faults:
114:Shuttle Valve Electric Failure
<-END Faults
------------------------------------------------------------
* *
------------------------------------------------------------
..--Previous Faults--->
Active Faults:
114:Shuttle Valve Electric Failure
Logged Faults:
114:Shuttle Valve Electric Failure
<-END Faults
------------------------------------------------------------
* *
------------------------------------------------------------


I did put a multimeter on the rear sensors, and they measured less than the RAVE specs, but they measured almost the exact same. I haven't measured the fronts.

I read somewhere that the sensors need grease on them to work properly, so glopping some grease on them is my next move. Any suggestions?

 

C'mon Doc M you can do better than that. IMO I reckon you have an electrical contact fault in the loom or at the SLABS connectors. It might initially pay you to reset the ABS sensors and also pull the connectors, clean and spray them with electrical contact spray and trace the circuits through to the SLABS and clean up and spray any electrical connectors. Also pull all the conectors on the ABS modulator and clean and spray those. Lastly pull the SLABS connectors one at a time, clean the contacts and again spray them.

Remember to disconnect your truck battery before you start on these connections. Good luck.

 

Ok, thanks for the tips. I was wondering if there was some secret trick I hadn't heard about. I also feel like it has to be something to do with my work since it started after I'd pulled everything apart.

Also, I really haven't read about anyone having similar problems, which surprises me.