2017 Silverado transmission revs up when to go into 2nd then catches.

[Iamsickofmysilverado2017]

Hello, I have 2017 Silverdo, 72,000. This past Jan. Just had the lifter stick which had to get the left side redone. Now on my way home from work I pulled onto my road, put in park. Got out to get mail got back in put in drive started going up a hill and it seemed like it lost power. I put it in reverse backed back down tried again and noticed when it went to go into 2nd the rpms raced then it caught second so I was able to get it to my home. Any ideas? Or are we leaning towards a rebuild? Never had any issues with granny until that moment. Now it does it almost the time. I haven't drove it out of my driveway since. I just want to get it fixed so I can get out from it and get a different truck. 

[rav3]

Have checked the transmission fluid level? Have yo ever changed the fluid?

[Iamsickofmysilverado2017]

I checked it and it's good. No I have never changed it. Bought it at 33,000 Not sure if it was changed at 30,000. 

[rav3]

Was the fluid red? Or a a brown color? Can you see any sparkling in it.

[Iamsickofmysilverado2017]

19 hours ago, rav3 said:

Was the fluid red? Or a a brown color? Can you see any sparkling in it.

It was kind of clear with a reddish tint.

[diyer2]

Torque converter?