Erratic right rear speed sensor reading, which sets a code in the ABS module

J-MECH

MEMBER
2013 CADILLAC CTS
3.0L
V6
4WD
AUTOMATIC
95,000 MILES

Working on the listed above. Getting an erratic right rear speed sensor reading, which sets a code in the ABS module. Also, getting an over speed reading from the left front wheel speed sensor, which actuates the stability control. The left front is not setting a code. In the ABS data stream, the left sensor reads fine. The right rear shows erratic. In the VSES data stream, the left front shows over speed, and the right rear shows erratic. I replaced both wheel speed sensors. Still have the same data readings. My ABS module is bad.

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,645 POSTS

Hi,

Replacing the ABS module on this vehicle is a little involved. However, if you take your time, you should be fine. The only concern is this. When the procedure is completed, the new module will need to be programmed to your vehicle. This will require a scan tool that can communicate with the module.

If you look at the attachments below, they include the directions and pictures specific to your vehicle for module replacement. Take your time and make sure to follow the directions when performing this.

I hope this helps. Let me know if you have other questions.

Take care,

Joe

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