Shuts off and will not restart, code 42

Ordered it, I had ordered one last week that came in DOA and then had my original one tested but it tested good so I chased my tail for a min well then I was tryin to find a schamatic and some time to fix the truck well when I finally found the drawings I could do better trouble shooting which lead me back to the ICM, grounded out the right wire the injectors pulsed to that tells me in fact the ICM is bad so I ordered an AC DELCO one this time fingers crossed this is a good fix

Installed new part started right but I may have crossed the wires for the luck up clip cause when u drive it the rpm bounces around a little like it’s hunting and I know one of those wires go to the tach if I remember right

Wires were good I think my caps bad cause I remember scraping the calcium off it early last week, if I remember right, problem I have is it’s a truck that I don’t drive very often so I don’t try to get it fixed like now so I do things and forget what I ha have one lol um it has a new rotor cause the center price broke off on me but. I new cap, it dials great and does drive it just has a small miss or hesitation like it’s not hitting all cylinders but yet not that rough so I’ll change cap amd aee

Yes ur right lol I swapped then and man did it buck lol

Yea that what I’m going to do, I had taken it off and must have hit the metal peice in the center of the rotor so I changed that out not even thinking about the cap and I have always changed them together so I’m real sure that’s the problem, today I have plenty of time to fix or drag it to the local shop lol

Center price of the cap had slung open so the context er was floating around n there um I bought the truck from a friend and by the way the spark plugs look I’ll do them and wires next and I think I’ll
B as good as I was when this whole started, Roy that’s for all the help I’ll saves this conversation and picking up if I have any other questions. U know desiels as well

Not think I have been told the right info, last year had a code for 7-8 glow plugs bad so I changed them all with after market plugs, not I still have codes for those two and pending codes in all the other ones? Been told wiring issue or a glow plug control modual and none of that make seems to me I don’t have a code for the mondual just the plugs

07 6.6 duramax

Ok, been told GM do bad with aftermarket plugs um I think that’s a scam but that’s just me seems crazy to spend another 200 after u have changed the plugs just to fix the original problem