2003 Chevrolet Suburban 5.3 V8 codes C0237.
Transmission was rebuilt and Neutral safety switch speed sensor all replaced.
Question = i have
code C0237 this codes comes when i am driving around 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 suggestions?  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.
2002 ABS and TRAC OFF Light Codes C0035, C0036
REPLACED BOTH FRONT WHEEL BEARINGS AND ALL FOUR ROTORS AND NEW BRAKE PADS
question = WHAT IS MY ABS PROBLEM? Why does my car do this.
2002 ABS and TRAC OFF Light Codes C0035, C0036
REPLACED BOTH FRONT WHEEL BEARINGS AND ALL FOUR ROTORS AND NEW BRAKE PADS
question = WHAT IS MY ABS PROBLEM? Why does my car do this.
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2003 Suburban ABS Code C0237