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This truck hates me..

2K views 14 replies 6 participants last post by  Rick_crew  
#1 ·
So last night I replaced the whole driver side hub assembly because the speed sensor was no good, I used the moog assembly and low and behold the abs light/abs fault is still on and saying the speed sensor is no good! And to add insult to injury, the cel randomly popped up with P0171 right after the hub install. I'm at my wits end with this truck and have no idea what to do
 

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#6 · (Edited)
This sounds very likely to be damage somehow in the ABS sensor wiring or a connector.

It sounds probable that the original sensor may not have been bad, but the signal from the signal from the sensor does not get where it needs to go, which is to the anti-lock brake control module.

Or, the original sensor was bad, but when you installed the new sensor the wiring from the sensor to the ABS module was damaged. Have you inspected the sensor connector at the hub?
 
#15 · (Edited)
It may be so, but I would NOT buy new hubs as yet.
You need to verify it isn't in reality a cable problem or the ABS module itself.

I would start here:
http://www.355nation.net/forum/elec...l-lighting-security/18683-special-electrical-schematics-all-years-part-1-a.html


That "loss of communication to the BCM" fault is possibly a clue to the problem..
The probability is that the two faults are related.
Download the schematic if you haven't yet done so.

Also find the cable diagram, maybe in the exploded-parts views at Nalley some other parts vendor. Use that to map out a close inspection of all the connectors and cables.
Look for damage, etc.