8 Speed Swap Diagram Help

[1500Teej]

Update.

I got a 2014 8 speed pcm from lkq. Then I went and got a new brake pedal sensor and voila my truck starts now!! Thanks everyone for your help. Now lol the next hurdle is I shift the rotary shifter from P into R/N/D and the selector moves but the illuminated light stays on park. I’m guessing I need to add more transmission fluid? Thoughts?

 

[1500Teej]

FIXED!!!

Thanks everyone.The bcm kept kicking back my gear selector in alfaobd, unknowingly. I disconnect the battery and made sure the truck lost all electrical charge i.e. pressing the brakes and various buttons and knobs. Went back, selected 4pos rotary prnd (rs4) & enabled all the tcm components disconnected. Waited about 10 minutes started the truck up and drove home. THANK YOU JESUS!!!!!!

 

[1500Teej]

Update!

So after about 2 days of driving my truck died on me. I started getting service electronic throttle errors and then my truck slowly over the next 2 days would start then idle like it’s about to shut off and I got no response from the pedal. I believe it was due to the pcm being from a wrecked truck or vin mismatch or something. So frustratingly I found other means of transportation. Over this 2 week period I ordered the 2013/2014 8 speed engine harness with the 8 speed transmission plug. I finally got around to installing it and my question is my old pcm that came with my truck still looks for the rfe transmission. I can’t change this in the pcm or atleast I don’t know how to. I changed it in the bcm but my truck still says not in park. Is there a way to change this or do I have to purchase a new pcm?

 

[Evguy1]

Have you got HP Tuners? Sounds like you need to change the PCM from 6 speed to 8 speed.

 

[1500Teej]

No I don’t have HP Tuners. I purchased another PCM and installed the 8 speed engine harness now I’m getting the codes P0513 & U11C2. Can’t start the truck due to a skim message & tcm message P0513 & U11C2.

 

[1500Teej]

Update.

I got everything working thru alfa obd (rewrote vin & installed the proper 8 speed harness connector that goes through the firewall passenger side)!!

Thanks everyone for your help.