2003 Chevrolet Suburban
5.3 V8

codes = C0237
Transmission rebuilt
Neutral safety switch speed sensor all
tech = jk
question = i have code C0237 this codes comes when i am driving arount
30 mph and i go over i bump  the brake light  abs  and rear  speed
sensor this has speed sensor on the transfer case  you can drive the truck
in the highway but as soon you go over i bump all this light comes
on any suggestion  i disconnect all the speed sensor the abs module the
transmission module  i move the pcm to a better place still the problem
there  






JK:
There are 2 vehicle speed sensors (vss) on the transfer case. 1 on left, 1 on rt., furthest to the  
rear. Inspect those wires VERY carefully. Also inspect the wires all the way back to the pcm  
under the hood. If all look ok, would suggest running new wires to both sensors. Have had a  
couple trucks with similar concern, the wires test good, pulling on wires does not should a
broken wire, and had to run new wires to repair. Not sure why, but that is what fixed them.
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