Yukon shuts off when put in park

I just got my Yukon back, I had a new abs Brake Module installed. It has only happened twice but when I put it in park, it shut off. Didnt sputter or anything like that. Took it out of drive and put it in park and it shut off.??????? Its a 2001

do u have a way of checking for some dtcs??

I do have a computer that we use for check engine lights but nothing shows up. 

it has never happened to my wife, only me. We have seperate keys.....I know they are not computer keys.....I dont know