GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hi there, Thanks for requesting me. With your truck, I hear the abs is on but at times its off and the Abs activates?If so, have you had a chance to get the codes?
Also have you had a chance to check for a loose front wheel bearing?
Ok, everything your mentioning is screaming either a wiring issue to the front wheel speed sensor, a bad wheel speed sensor or a wheel bearing in the front.
What I would do is take the connector off the top of the upper control arm, measure resistance over the 2 pins in the connector and see if changes when you move the wiring. IF so, change that sensor and if the bearing is loose, change the bearing.
That screams wiring to the sensor. IT is not related to the power steering. Check the wiring to the sensor as I mentioned and I think you will find it.
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