cbranz43

To follow up to my orginal reply. I was still having issues after replacing the ECM. I took it back to my mechanic and had a good chat about the issue. He says that the frames get sprayed with a duracoat like substance and it prevents a good ground connection. He grinded off the 'duracoat' on all frame grounds (not sure how many but there are a few) and then we replaced the negative battery cable with a thicker gauged wire. He didn't think we need to replace the ground wire but I insisted. Its been about 3 week now with no issues. Fingers are crossed.

I have read and read about this. I have a 2007 4.3 V6 new body style silverado. It does what I call 'glitching'. The lights for airbag, check engine, tire pressure, etc will flash on and off. The gauges will flip back and forth. The engine seems to die for a millisecond and come back on. The #1 way for me to trigger the 'possesion' was to use turn signals, and to get gauges to go nuts, use the hazard lights. Truck would go nuts. Then I get to where I was going. Turn the truck off and it would not start. Nothing at all, no noise etc. I'd pop the hood, wiggle the negative battery cable, and I could start the truck. This went on for some time. I'm not very mechanically inclined. I finally cleaned the ground wire that is connected to the frame (behind bumper) and yes it is a small gauged wire. But I cleaned it and re-attached. Couple weeks later. I really cannot start the truck at all. Nothing when I turn the key to start the engine. Checked starter electrical power with multimeter, no issues, battery is brand new, no issues. Had it towed. ECM was fried. Replaced ECM. This was 1 week ago. Now the truck is starting to 'glitch' again. So mad right now. I'm going to replace the ground wires tomorrow once and for all. I will let poeple know what happens. There isnt a ton of info out there about this issue but it is happening to a lot of people. This blog post has the most information. Lets keep it going for the sake of everyone's insanity in dealing with this issue.