My daughter bought a used 1998 BMW 528i, it now seems to jump in 2nd gear

What is your question?

and when slowing down it jumps hard as well, it had some frontend damage and was repaired and the warning light is a yellow triangle with and exclaimation point. Trying to find out what steps to follow first. It seems to shift up and down fine with a slow increase of speed and letting it slow on it own.