Shifting problems

If it will shift from first to second, I might suspect a faulty 2-3 solenoid. If it is shifting from first to third, it may have an internal trans concern. The solenoid should be tested to confirm here is where the solenoid is located you will need to remove the pan to test and replace it.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Remove the 1-2 accumulator if necessary.
Disconnect the internal wiring harness electrical connectors from the following components:
Transmission fluid pressure switch (1)
1-2 shift control solenoid (2)
2-3 shift control solenoid (3)
Pressure control solenoid (4)
TCC PWM solenoid (5)
3-2 control solenoid (6)

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

Cheers