u/swiahh

i know you guys are smart. i hate ai but i thought it might help me. it’s a 5 digit code from a to f

2004 Yukon Denali. I’ve owned this truck for about 2 years now, for a long time my truck makes this super loud rattle noise over bumps in the rear. I figure it’s either lose shock bolts/or worn shocks, sway bars, or even maybe a heat shield. Thoughts🤠