First off i couldn't remember my log in credentials for my old account ( JGG1081) but anyways i have a 95 6.5 turbo that has a 1999 motor in it. And i haven't had any major issues is almost 8 yrs since i did some mods to it. But i also adopted a 96 2500 6.5 turbo abt 6 yrs ago and it sat for yes . But ran before this issue and the truck is loke brand new inside it. And i seen this truck run b4 . I do think it has a blown head gasket cuz i seen a lil bit of coolant in the intake . But i need to get it started before I can check all this. The
ENG-1 fuse blows the sec u turn the key on . I've unplugged several things , aswell as the harness going into the cab ( thought maybe the ignition switch was shorting out) but still trips my power probe. So there a dead short somewhere. I don't know much abt the light duty trucks. I work on big trucks and i need to know what all is on that fuses.
If anyone might happen to have electrical schematic for this truck and would be willing but share it would be greatly appreciated. 1996 GMC 2500 6.5 turbo 2 wheel drive all factory .

 

Update . So i figured out why it's blowing the fuse . I used my power probe and found the dead short coming from the ground stud from the back pass corner of the motor. Now i put a ground wire back on this stud cause it was off and really couldn't reach any where else . But when i hit the key it blows the fuse but then the start engages. And when i remove it the starter won't engage which leads me to believe it's a ground . Now i did make sure it wasn't the power for the glow plug solenoid . The wait to start light and solenoid do engage so I'm confident the glow plugs are working as they should. I'm just confused as to why I'm getting power there . And when the fuse blows the truck will turn over( no start of course). I don't know much abt this truck . It does look like someone was in there at one time because the glow plug solenoid was bolted down. I did bolt it down so it would ground itself good. So any ideas would be gold.

 

In case someone else reads this . I used my power prode and found the dead short in the water seperater sensor. I unplugged it for now and truck came alive . It fired right up after sitting for 6 yrs or better. And after fixing the vacuum lines . I hooked up my snap on scanner and found that #3 injector is bad and i just so happen to have a set of factory injectors that took out of my other truck. Will update the thread tomorrow after i replace #3 . It has a miss at a idle . And smokes like a freight train. Injector cut out showes #3 bad and #7 questionable.