hi all new here but not to burbans. I have a 2007 suburban ltz 140k all stock I just started getting a clunk noise when hitting bumps its not every bump but its getting worse as time goes on I jacked it up and looked all over but cant seem to find anything please help. I dont have the money to take it anywhere so I need to diagnose and fix it myself

 

Welcome to the forum...
You most likely need to lubricate the slip yoke of the drive shaft...or possibly have bad u-joints but my money is the slip yoke...

 

Check the bolt and fitting that joins front sway bar to Lower A arm. Mine had a single intermittent clunk from passenger floorboard. Clunk was typically on deceleration and crossing a dip or right hand turn.