2009 HL tailgate noise

[Camread]

Just want to know if anybody else have this problem. When my car goes over a moderate to hard bump, the tailgate or somewhere in the cargo area makes a squeaking/popping noise. I can't point my finger to where it is exactly but its somewhere in the back. Its just been doing this the last couple of months though.

[Tech1984]

Power lift gate?
I've seen several now where the latch meets the striker not smoothly.
What I do is insert a pry bar into the striker and move it perfectly straight as you're looking at it.
I mean perfectly perpendicular to the sill plate. Using a square may help.
Other than that, is the cargo area clean of all loose stuff?
Any add on like trailer hitch?

[Camread]

No trailer hitch or power gate, cargo is always clean/empty. I think it sounds more plastic-y than metallic, like two piece of plastic panels rubbing against each other when the back bounces.

[Thunderchief]

I'm getting some mild vibration in the back someplace. I need to check the cargo bin, no third row in my 2010. I need to climb back there when someone else is driving. Not a pop noise though.

[luck123]

I too am getting some rattling back there on moderate bumps. Haven't pinpointed it yet though.

[JimT]

I'm pretty sure the noise comes from the plastic interior panel on the hatch. Mine will only do it when it's cold. It's perfectly quiet in the summer.