Tdallas

No I didn't perform work prior to it starting this issue. It started doing it intermittently last few days to about a week so I changed out the sensors the codes showed and did a fluid/filter change hoping it would solve it. More research shows apparently its popular to have a ground issue to cause this but have not investigated that yet. I'm military and on a trip for next few weeks so can't do anything until I'm home but please send any tips

No I didn't perform work prior to it starting this issue. It started doing it intermittently last few days to about a week so I changed out the sensors the codes showed and did a fluid/filter change hoping it would solve it. More research shows apparently its popular to have a ground issue to cause this but have not investigated that yet. I'm military and on a trip for next few weeks so can't do anything until I'm home but please send any tips

I have a 05 Silverado Z71 5.3l with 4L60E transmission. Transmission starts out in 3rd gear and won't shift automatically but can manually shift up and down. Replaced fluid /filter/TCC solenoid/A&B solenoids but still having the problem and getting codes P0740,P0758,P085,P2761. Any help?