A squeak can literately be anything, especially since the front end has already had someone into it.
Noises can not be diagnosed over the internet...contrary to popular belief. It will take you jacking up the truck and poking around. This one is on you to discover. Unless you like going by every tom, dick and harry's recommend shot in the darks.
2013 Ecoscrew, Race Red.
Between You, Me, and the NSA...