rattling noise

so i installed a new tracbar the other day and got all the bolts tightened up and test drove it right after and while driving at low speeds i could hear a rattling noise, like a bolt was kinda loose somewhere. so i got back home and checked all the tracbar bolts and everything was still tight. and im pretty sure thats the source of the noise cuz i didnt mess with anything else and it started doing it immeditately after i installed it. got an alignment and everything today and can still hear the rattling while driving at low speeds, no popping when i turn, just when im driving straight. thoughts?

check for clearance between the exhaust and the crossmember.

check the heat shield on the cat convertor

check the transfer case linkage

check for loose flexplate bolts.