I just recently purchased a 2001 durango slt with the 4.7 L motor. 80,000 miles on it. After I start the engine the abs light and airbag light will come on and when this happens My speedo, reverse lights, will not work at alland the automatic locks that supose to lock at 15 mph will not lock. problem is this does not always happen. Took it to dealer whereI bought they replaced a speed sensor at no charge. Lights did not come on for 7 days but now it does just not all the time, likeI stated before speed sensor was replaced. Sometimes I start it up and go and its fine sometimes the lights come on. They never come on while im driving if they are off after I start it. They only come on sometimes right after I start it. AfterI drive a bit with the abs light/ airbag light on they will go out after a bit and then the speedo works and my doors will auto lock like they should. Wondering if ther is a electrical short somewhere or could it be a bad engine computer. The dealer where I bought it from wants me to bring it in when the lights are on and the problem is happening only problem is when it happens they go out and everything is fine before I can get there. Any advice or info would be greatly apreciated. Brian