4l80 swap, no crank..

[jschrock]

Ok, swapped in the 80 and with it still on jack stands I tried to start it with no avail. It will not crank at all and yes, I checked all fuses, swapped relays, bought a new NSS, did the park/neutral switch adjustment procedure, and made sure I didn't screw up the wires to trans or on the crank position sensor. I am officially lost... Anyone run into something like this on their swap?

[bones73]

Does your prndl display park.

[jschrock]

Yes, it will show Park and Neutral, some of the other gears are off or will take awhile to show up though.

[Blackpearl]

I know first hand it's the neutral safety stitch. I accidentally pulled one wire loose when I did the trans on my Tahoe. Check it, and really look at it good.

[jschrock]

I know first hand it's the neutral safety stitch. I accidentally pulled one wire loose when I did the trans on my Tahoe. Check it, and really look at it good.

I took the whole thing apart, the only thing that is questionable is the ground wire on the larger connector. It looks a little smashed but nothing through the insulation.

[Blackpearl]

I messed up one little pin inside. Didn't realize it till i pulled on the wires and it came out. I actually bypassed that switch to be sure through the fuse box and the truck started no problem, I can't remember exactly how, just remember i pulled a relay and jumped it.

[TRPLXL2]

If the wire looks smashed, It could be broken inside of the insulation. I had the oil pressure sensor ground seperate inside the insulation, I found it doing a continuity test on that wire.

[jschrock]

Does your prndl display park.

It will not show Park now unless I turn off the key and turn it back on....all other gears show up perfectly.

[jschrock]

UPDATE:

repaired ground wire...the only one that looked a little questionable, replaced starter, replaced plugs on NSS, replaced NSS.....still no crank...

Anyone have any other ideas? Before I just say f&*k it and install a push button start...

[Blackpearl]

I'm at a loss without being there. Have you bypassed the ignition switch through the fuse. box relay? All it takes is a little wire. I bypassed mine, worked and ran just fine. That's how i narrowed down the NSS on mine. Maybe we are going the wrong route and need to look elsewhere.