Chip problems.....truck just quits running

[BigBadFord]

I installed my new chip about a month ago. Everything was working great till yesterday. I was towing my trailer and the truck just died in the middle of the intersection. Started right up and then died again. Service engine soon light came on. Started truck again and drove off to the side of the road and then truck died again. Thought that it might be the chip so I pushed on it and then service engine light went away and the truck ran fine all the way home. Got into it today and it quit again. Same thing happend. Pushed on the chip and truck was fine. So I pretty sure that the contacs are good and cleaned. Could my chip just shake loose?? I noticed that the duct tape that was holding in place was off. If this is the problem is there a better way to hold the chip in place?

Thank you

Kyle