I have a 2008 Chevy Silverado 1500 with a 6.0L vortec engine. This truck is crazy. It all begins after it was in service for a code regarding deactivation on cylinder 6 for economy. They replaced the coil pack and another part. All was fine for 2 days, and it came up again. With that code, I was driving and the gauges twitched rapidly, inside lights dimmed and flashed, locks cycled up and down, and all of the electronics reset. Apon turning it off, it had no power at all. It would reset itself but got worse over time. I took it to another dealer, they did more work, and long story short they ended up replacing the crankshaft. At the same time they replaced every single battery cable. As far as the electrical issues go, i didnt have any for 3 weeks and they slowly returned. It would be little like the clock reset then a few days later full blown freaking out. The dealer reseated the fuse block and it solved it for another 3 weeks. Now today it freaked out again, and had reset several times during the day. I pulled the fuse box cover off, and one of the four clips is missing that holds down the handles. I pulled the box up and underneath where the main power in runs into a connector that the fuse block plugs into, the clips holding it in place are broken. My question is with all of these stupid clips broken, can that cause it to have an intermittent connection? Has about 65,000 miles, k&n air filter system. Over 5,000 in work has been done under warranty so far.