I just started getting three error codes at random and then go off again at random. The lights are the check engine light, the service 4 wheel drive light and emergency brake light. When these lights come on it shut down my cruise control. Any ideas?

 

Probably a flaky wheel speed sensor. (and probably the left front) Get the codes read, see if anything interesting comes up.

 

They did check the codes and it did show a sensor error. They didn't know which sensor. I'm taking it back next week and if they can't tell which sensor they will try the left front as suggested.
Thanks

 

Code *should* tell which sensor..... If not, if you have a scanner that can read live data, watch the sensor feeds while driving. (two people for this exercise please) See which one doesn't agree with the others.

 

Finally got the truck in and you were right it was a wheel sensor on a back wheel. Drove it over 1000 miles this weekend and the lights never came back on!!

 

Thank you for the feed back.