Just finished installing a refreshed ats extreme trany w/CoPilot and deep pan off an lb7 to my lly. All wires were soldered double checked and heat shrinked. I pulled off the valve body harness from the new tranny and removed and soldered the CoPilot sensor to the exact same wires it was removed from and added them to my lly harness and re-installed. Also tying up the loose extra wire from my lly harness under the ats(lb7) valve body. Double checked and re-checked all wires and re assimbled the pan. Added fluid, checked everything, started the truck, (went through the purge instructions) and got the P2810 code (Pressure Control (PC) Solenoid Electrical) in MPHC status , The code only came on after i started to move the gears, once in drive (watching my edge module) it would shift into 1 st, then about 3 sec later strait into 4th. Failsafe???? everytime. This was thur. Talked to ATS and there saying it could be a grounding issue or bad wiring. Went through all the wiring from the TCM all the way to the tranny about 6 times, even pulled the pan and checked the valve body harness again. I cant figure it out, I do have my efi on hand if that can help. Thanks

TCM is looking for solenoid G and is not finding it. All '04 and later Alli's have this solenoid and the TCM is looking for it. If you used an ealier valve body without solenoid G, or an early harness that does not have a pig tail for it; you will get this code.
Adapts will freeze and the engine will not run as well as it should untill this problem is fixed.

so i should stick the lb7 harness back in and and re-install? or change valve bodies? Right now i have the lb7 valve body and the lly harness installed, With the long pig tail tied up under the filter. I was told to just tie it up??

so i should stick the lb7 harness back in and and re-install? or change valve bodies? Right now i have the lb7 valve body and the lly harness installed, With the long pig tail tied up under the filter. I was told to just tie it up??

You were told wrong. You don't just disconnect something on a computerized trans and not expect the TCM to reject it. Remove the G solenoid off the LLY valve body and connect it to the pigtail, then just zip tie it to the pipe out of the way inside the pan. The code will instantly disappear and truck will run much better.

ok, ill pm ya