2003 Suburban without JL4 option. C0222 lights the ABS light almost constantly. I would say it is intermittent since it does clear occasionally but only for a moment. Used my blue driver and the noun name of the fault is “rear ABS channel in release too long”.
What is odd is almost everyone on line says this code is actually the right front wheel sensor.
Using the GM official shop manual says to troubleshoot the wheel sensors then wiring. If nothing wrong is found, replace the Electronic Brake Control Module.
I have verified both front wheel sensors. Voltage output is at least a half a volt (good) and resistance to ground is infinite. I did all of these checks while wiggling the wiring to the best of my ability. All connections are very good condition. I also have a new wheel sensor I have tried on both front wheels and it makes no difference.
Since there is some confusion on my part due to the noun name addressing the rear ABS channel and what folks on line say it is, I had the codes read with 2 different readers. All agree C0222 is the rear channel in release too long.
Without the JL4 option, the rear wheel speed signal comes from the VSS (vehicle speed sensor which feeds data to the power train module, which in turn sends a signal to the ABS (Electronic Brake Control Module) that modulates both rear wheels as a pair. I did not pull the VSS since the speedometer reading is good so I have not checked any connectors that contain the VSS signal going to or from the power train control module. Since it occasionally will clear for a moment, I still think it might be a wiring issue. Any advice is greatly appreciated before I begin replacing parts.
What is odd is almost everyone on line says this code is actually the right front wheel sensor.
Using the GM official shop manual says to troubleshoot the wheel sensors then wiring. If nothing wrong is found, replace the Electronic Brake Control Module.
I have verified both front wheel sensors. Voltage output is at least a half a volt (good) and resistance to ground is infinite. I did all of these checks while wiggling the wiring to the best of my ability. All connections are very good condition. I also have a new wheel sensor I have tried on both front wheels and it makes no difference.
Since there is some confusion on my part due to the noun name addressing the rear ABS channel and what folks on line say it is, I had the codes read with 2 different readers. All agree C0222 is the rear channel in release too long.
Without the JL4 option, the rear wheel speed signal comes from the VSS (vehicle speed sensor which feeds data to the power train module, which in turn sends a signal to the ABS (Electronic Brake Control Module) that modulates both rear wheels as a pair. I did not pull the VSS since the speedometer reading is good so I have not checked any connectors that contain the VSS signal going to or from the power train control module. Since it occasionally will clear for a moment, I still think it might be a wiring issue. Any advice is greatly appreciated before I begin replacing parts.