I recently installed a 4l80e into a 2001 chevrolet silverado 1500.. the truck has a 6.0 cam... blah... blah.... i installed a junk yard 80e, that i put a shift kit and a 3600 stall YANK converter into... the truck ran flawless for about 200 miles... and now its stuck in second when i put it into D or 1,2,3.... and its giving me a p1860 and a p0758 which are a

DTC P0758 2-3 Shift Solenoid Circuit Electrical
DTC P1860 TCC PWM Solenoid Circuit Electrical

should i just change solenoid are what? i checked the connections on the main plug... and plug adapter i got from speartech..... maybe i should take that plug adapter apart...

if there is anyway to trouble shoot this then please let me know.. i am not afraid to use a meter.. i do it everyday.. i just need a schematic to look at, thanks!!!!

 

Pull the pan and see if there are any bad connections or burnt wires in there.

 

How do you like the 80 over the 60 when it worked? I'm waiting on getting my 80 back from FLT right now. Going with a yank 3200

 

I think you should probably verify that you have power at the trans. With the 2nd gear start you either have a power issue or a solenoid issue. However what is the chances that both the 2-3 solenoid and the lock up solenoid failed at the same time.

 

i noticed that the male plug sticking out the trans seems to have tranny fluid on it... think that could have anything to do with it... thanks vince ill let you know.... which wires do i need to check for voltage on the plug???

 

well add a p753 code to the mess too..... solenoid A code.... i have power on ingnition 0 fuse and the fuse is good. so its not an ignition swith issue... i even pulled fuse and reset codes... and it gave me the same codes.... anybody got anyother ideas before i pull the pan???

 

I suggest you do a current draw on the power feed wire. A meter won't load the circuit enough to tell if there is high resistance. The power feed is the pink wire at pin E. I usually use a headlamp bulb for testing. If it lights bright, you've got a good circuit. If not you'll need to check your wiring. I'd almost bet it's your ignition switch. I've done many of those for this concern.

 

I agree. Especially since all three of those solenoids are powered by the same fuse.

 

Figured it out... the adapter harness i bought from speartech had a pin that was pushed back and not making good connection.... sucks because i paid 150 for it so i wouldnt have any issues and it created issues.... o well just glad its fixed!!!!! thanks guys...