I am trying to locate annoying rattle/noise in a 2010 Suburban that develops at speeds over 50 MPH coming from rear interior panel. Any suggestions on how to diagnose? I anticipate pulling out the rear panel - already removed the jack and noise still persists. Repair manual recommendations welcomed.

 

Welcome to the forum. Moving to the Suburban section of the forum where you will get more views.

 

Could be the plastic inner panel on the hatch. A subscription for your truck at alldatadiy.com will get you a complete shop manual online.