2008 Chevy Express 3500 - ABS / Stab Dash Lights On

[RocketBunny22]

ABS and stabilitrak lights on in dash and only one code which is C0050 [RR Speed sensor signal erratic]. Replaced EBCM and RR speed sensor, also checked wiring to and from sensor to EBCM without success. anybody else run into this?

[Tim Martin]

I have run into it already. What I found on the one I had was a bad wiring harness. At the time I had mine in the garage, there was a wiring harness available from the dealer which I got. I replaced the sensor and the harness and that took care of the problem.

[sbebenelli]

I have seen several bad harnesses

[steven kiser]

Harness. I've tried over and over again to repair them with little or no luck. Replace it and be done with it.

[RocketBunny22]

found a wire corroded off inside the coating

[steven kiser]

If I were a betting man I would put money on a probe prick hole near the corrosion. The prick refers to both the harness and the idiot who put it there. I was taught a long time ago to lightly run my fingers along the harness feeling for any deviations. Usually it was an issue involving back probing the harness. I know sometimes it's necessary but a correct seal procedure should be followed. On any vehicle we pierce a harness after we clean and seal it we tag it notifying anyone looking for a harness issue. We have received thankyou calls from other shops far tagging the back probe areas.