This started a week a go, not shifting rigft "hanging up in gear", Stalling, serging, Head lights and dash lights flickering, Voltage going up and down 9 to 16v, Tach. gauge all over the place. I put it in sefl diagonic and got 12 and 55. 12 battery or PCM disconected. 55 End of codes.
I checked and cleaned the battery terminals, all grounding piont, PCM plug, battery wires, and checked the altanator also. Usualy just after it warms up is when it starts happening, also I opened the PCM and found the rubber cement"sealant" all cracked up so I cleaned it all off and used contact cleaner to clean the board off and resealed it with sensor safe RTV Sealant. But it still doing it.

I think the problem is the PCM, but not sure.