Sorry for the lengthy read but its the issue im having and i really need help

So i have been trying for months to get this g running and driving car blew a rod at 155 in may fast forwards a month got a motor 40 k miles running . Put it in had slight issues my issue now is the car ran and drove went to drop it off at a mechanic and the day i dropped it off he fixxed the misfire getting my g back on all 6 i thought that was a win and on to the next fix well the car had a intermittent issues where it would not register park so i had to start it in neutral which i thought was weird but didnt happen all the time well he was driving it and it started acting funny dash went blank all gauges dropped and went wonky well parks it car wont recognize any gear and wont start . Replaced ipdm started then went to drive it died and no crank no start replaced the shifter,(broke the manual mode cable) started put it in reverse same thing died no start. So we jumped the started solonoid and car will stay running register drive and reverse but not neutral or park, but runs and drive in 4th gear alone, wont shift , and trans starts slipping after driving for a little while

 

Check your TCM ground wire, it's located on the timing chain cover top middle, you will have two wires landed on the cover bolts and one of them is the TCM ground.

 

That was the first thing i checked

 

Then it's probably the PNP switch on the valve body, not sure if it can be replaced separately but it SHOULD BE. Trying to source just the PNP switch will be difficult though, probably going to end up putting in a new/used valve body.

See if you can find one from your local wrecking yard, then you can fiddle around with it to try removing the PNP switch.

 

Is this something fixed by the transgo kit?
Just wondering..

 

No, the transgo kit uses your existing valve body and you drill out a few passages and replace a few valves.

 

Any updates
having the same problem when my 04 stuck on 4th gear I had to turn it off and on

 

Any update?