Service 4wd, Speed Sensor

By chuck4wd
August 6, 2010 in Ask A GM Technician

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chuck4wd

Posted August 6, 2010

I have a 05 Z71 with a service 4wd messeage. I brought it to a shop to get the code read. We got a speed sensor/anti-lock brake code. I'm leaning towards the speed sensor. The truck sometime switches to 4wd while driving, the switch sometime will not light up or the red netureal light is on. If you turn the truck off and on again, some times you can get the 4wd to work. Where is the speed sensor and how hard is it to change. Thanks

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