OK so I’m Hoping Somebody Here Could Help me But 806 Uplander off a dealership Didn’t do Enough Research Turns Out it Was in a Wreck Couple Months After we Bought it Something Breaks The Car Won’t Move . Turns out the axle beam broke. We replaced that. Then it started making a loud pop sound from the rear when we hit some bumps. It not every time and it happened more often as there was more weight in there. So we replaced the rear shocks. But it is still making that piping noise but a little more often. Any ideas on where to look at next?

thank you in advance