Truck won’t crank

[Josh154]

So I just got done doing injectors cp3 and turbo. Go to fire truck up and it won’t crank, I have power at obd port, check engine light is on and getting u0100 and u0101. Re checked and plugged 2 main harness in and still nothing. Tried clearing codes and no luck. Any ideas?

 

[Chevy1925]

did you pull the relay to keep your self from starting it? are the batteries charged? is the signal wire on the starter attached? did you put all the ground back that you removed? did you pop any fuses? no bent pins in the bail connectors?

 

[Josh154]

No did not pull any relays yet, wanted to make sure it would crank first. Gonna check pins in nail connectors. Had to take a break and go cool off lol. I’m not sure I removed any grounds

 

[Dozerboy]

Have your batteries load tested. I had that happen after my turbo and pump install and the batteries just happen to go bad. I spent a lot of time cleaning grounds and checking things, because I couldn’t boost it or jump it. I was mad as hell


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[Josh154]

Batteries are brand new 2 months ago. Checked bail connectors everything is good there. Pulled every fuse out of engine fuse box and checked them all over.

 

[Josh154]

It’s weird though because all of my in cab functions work, fass kicks on. Etc. I can go through dic but some things are there and some are not

 

[M.A.M.]

What happens if you jump the starter with a screwdriver?


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[Josh154]

Here’s what it does. None of my gauges or anything work, when I go to start everything just goes out. I can’t even flash the truck and my cts won’t connect either. Is there anyways I could have fried the pcm?
[YOUTUBE]C0YdR4lJggo[/YOUTUBE]

 

[Chevy1925]

start looking at connections. what did you move/step on/undo when you were in there?

 

[Josh154]

I undid bail connections and pulled that all out of way when dong injecors. Also deleted fuel filter housing

 

[Josh154]

I’m also getting service trailer brake system too. Never gotten that message before. That’s bcm related right?

 

[Josh154]

Gonna go buy 3 new fuses for the block on firewall. Worth a shot

 

[skintback]

Check your TCM you're not getting the line under PRND and try cleaning the ground under the driver's door below the cab mount on the frame

 

[ikeG]

Sounds like the tcm is unconnected?

 

[Josh154]

Ok unplugged and plugged ecu and tcm back in. Took grounds off on driverssade frame rail, cleaned them off re attached. Took 2 grounds off on front passenger side of motor cleaned them off. Checked over bail connections all is well. Voltage is good, battieres are new.

Now that I’m thinking about it, i hit the alt wire on something and it sparked. Bail connections were undone but not ecu was not unplugged at ecu. No batts were disconnected either. It was the drivers side alt power wire which is right by ecu, could This have fried the ecu? Will the tcm communicate if the ecu is fried?

All 3 big fuses are good on passenger firewall, I’ve looked over engine bay fuse box, all is well and fuse box in cab on drivers side is all good.

 

[skintback]

Try another TCM 06-10 should swap around to see if that's the problem

 

[Josh154]

I don’t need to get it reflashed?

 

[Josh154]

Would it not crank with a bad tcm?

 

[skintback]

No flash needed to just try it and see if that's the problem

 

[Josh154]

I’ll see if I can narrow one down. I tried jumping the starter and she spins over, i fan smell exhaust but won’t fire.