97 gmc sierra moves then slips out

[SwampDonkey252]

I have 97 sierra with the 4l60e transmission. It runs great but for some reason it won't move far. As soon as I start it up I can put it in any gear and it will go like its supposed to. But about 10-15 seconds later it will slip out and not move at all in any gear warm or cold. I can then shut it off and start it back up and repeat this. It will spin the tires but only for 10 seconds. The fluid is at the correct level and I checked the pump by checking the fluid while off then starting and checking the fluid while its running and the level goes down like it should. Please someone help me!

[gmtech4]

you need to scan it first

[SwampDonkey252]

I have scanned it and no codes regarding the transmission

[gmtech4]

You need a scanner to diagnose this problem as its a computer controlled electric transmission ,

 

You need to see the shift solenoid data when this happens , sorry

[SwampDonkey252]

So do you think its the solenoids or something small?

[SwampDonkey252]

Would the filter cause this?