The gauge has been working great for over 2 years, however, a few weeks ago I noticed that the cruise control would shut off. At first it was about every 15 minutes, then it got to be every 30 seconds and the DIC displayed a message to service the power steering. I noticed that the readings on the gauge would disappear for a second at the same time. It also seemed the engine would run a little rough (not sure). When I disconnect the gauge the car runs normally, but as soon as I plug it in the problems return. I didn't think the gauge could affect the car's computer system, but now I 'm afraid to plug it in. I reported the problem to [email protected]. They responded "The ScanGauge should cause any issues with the drivability of the vehicle. Does the cable feel hot or rigid? Have you noticed the ScanGauge exhibiting any strange behavior? What is the software version on your ScanGauge? To check this select MORE>MORE>MORE>VERSION or MORE>MORE>scroll to VERSION." I believe they meant "should not cause any issues with ". Since the software was written for the Cruise diesel and has worked well for over 2 years I don't think that is the cause. I will post if they find the answer. I am wondering if anyone else has had Scangauge problems.