Truck won't crank

[nonickatall]

@rockola1971

I disassembled today the PCM. The connector was absolutely clean, no green crust.

I opened up as well the PCM and as well inside, it looks absolutely clean.

Yes I have a meter and I can work with it, I would appreciate your help very much.

I measured to ground at the fuse socket. On the terminal pointing to the front of the car, I have 90 ohm resistance. The other has no ground.

 

[nonickatall]

I have a friend how has the same truck. Can i swap the PCM, just to check if his PCM works, or do I have to program the Key Lock system or something else?

 

[rockola1971]

Have you done any work lately that involved installing any sheet metal screws or disassembly/removal of anything hard like a valve cover, alternator, master cylinder, etc? If so, thoroughly inspect around the part for a smashed, pinched wire harness. Also look for a wiring harness under the hood that is rubbing up against metal and has wire insulation damaged. If nothing at all those then I suspect your problem is internal of the PCM since a fuse is blowing to it.

 

[rockola1971]

I have a friend how has the same truck. Can i swap the PCM, just to check if his PCM works, or do I have to program the Key Lock system or something else?

You should be able to do a direct PCM swap. The PASSLOCK is in your BCM so no problems there. There may be some accesories like AUTO AC or maybe the radio that may not work correctly or not at all but the vehicle should start with your friends PCM. A BCM is programmed to the PCM but I believe thats only for certain features inside the vehicle to work.

 

[nonickatall]

No i did very less in the last half year on my truck. Only known problem is that my fuel pump is leaking. I smell gasoline when i drive. I have a new pump here, but wasn't able to fix that problem yet. Aside from that, everything worked, an the engine runs good.

 

[nonickatall]

I talked to my buddy and he will come tomorrow with his PCM, so i can check if the PCM is the problem.

Do you think the fuel pump can cause the problem by shortcut, because of the fuel leak?