Hi I'm new to this forum and have been spending a lot of time digging through the forums and using the search function but it's been pretty apparent this problem isn't very common on lb7's. I had just bought my truck about a month ago and absolutely love it. Has had the Bosch injectors put in I was told about 70,000 miles ago or so. But when I was coming home from a buddies place Saturday pulling a steep hill my truck just lost almost all its power and sounds like that tractor noise you hear when you get this problem on lly's originally it threw codes p0201 p0204 p0206 p0207 which I know are the injectors open and along with those came p2146 for injector group A supply voltage circuit/open I had saw on other threads that usually it's a problem with them rubbing on the alternator or ficm bracket but have checked wires from ficm to where they enter the black plastic cover and seen no issues or bare wires. I also took the connectors off the ficm and put dielectric grease on them just in case. After doing all that I could finally clear the codes and started it up. Same thing. But it only threw p0206 and p2146. Left it alone for a night started it up again and checked codes now it's back to 1 4 6 and 7 again aong with the p2146. Anyone have any ideas or can offer any help?