by Berettaspeed » Mon May 23, 2016 1:43 pm
my rear sway bar bushings took a crap after my lift. the lift changed the position of the sway bar and allowed movement.
but yea, check all bolts and nuts to make sure everything is snug. I didnt remove anything at all except my shocks.
I also noticed on a few trailblazers, the exhaust shield comes loose above the muffler in the center of truck. not the resonator towards the end, if loose, you may get a noise.
let us know when you find it. Also check those sway bar links. you must have them loaded to check for looseness. at least i have found them easier this way. changed the positioning may reveal a gap to cause knocking.
My front ball joints also started making noise. old stuff just wears out.