Help new 4l80e is in now truck wont start
02-21-2012, 02:57 PM
#21
When I said to unplug the harness to see if the truck starts I was talking about the main case connector for the internal wiring for the trans. Like I said I do not think your issue is there. Yes the NSS or the PRNDL is the black box on the side of the trans. This where I think your issue is at or the wiring for it. I do not know what you are talking about grounding the switch. I guess where ever you got this info you should ask there. If I had to guess they are grounding a wire that will complete a connection for park or neutral if I had to guess.
As far as i know yes. how many grounds are there on a gmt900 ccsb?
It goes into park by the column shifter. I had to manually put it in park before i put the hose clamp on.
This is a huge pita as I have a seriously effed up back. With 2 herniations and sciatica it's not fun doing this by yourself with no lift. The only help I could get my bastard brother to do is push on the brake and try to start it while I was under it. Ratchet strap tie downs are your friend to lift the trans if you have no help. I will try to trace the wires whenI get home in about an hour and let you guys no what I find if I find anything.
02-23-2012, 03:00 AM
#24
I tried a new nss. still won't start.
the motor doesn't spin at all. i jumped the starter and the solenoid worked and it spun. but the gear indicator is still not working.
I can put the column shifter into any gear without puting my foot on the brake while the key is in the on position.
I'm gonna hook a scantool up to it tomorrow. Hopefully that'll tell me something.
could it be the ignition, crankshaft sensor?
oh I almost forgot, this trans was originally a 4x4 unit that I converted to 2wd. I hope that doesn't have anything to do with it...
the motor doesn't spin at all. i jumped the starter and the solenoid worked and it spun. but the gear indicator is still not working.
I can put the column shifter into any gear without puting my foot on the brake while the key is in the on position.
I'm gonna hook a scantool up to it tomorrow. Hopefully that'll tell me something.
could it be the ignition, crankshaft sensor?
oh I almost forgot, this trans was originally a 4x4 unit that I converted to 2wd. I hope that doesn't have anything to do with it...
02-23-2012, 11:58 AM
#27
Well this just keeps getting better by the moment. I hooked up an Actron cp9135 scanner and it says "link error". The book says this is due to a cut wire, loose connection, unplugged connections, faulty connections etc. Is this scan tool just a piece of ****? It seems like it's asking me to do it's job. Is there a scanner that would pinpoint something?
