Rear hatch making noise on bumpy roads..

[Vette73]

I don't know maybe it's just a common thing on rough roads..But, when I go over uneven surfaces the rear hatch makes noise.....Everything is fine with it, everything...Glass is making the proper contact and everything looks tight in the rear compartment.

I been using that latch from gadget man that opens the rear two inches....I like it and it is on very secure....I thought maybe that was it but it's still kind of making the same noise when the rear glass is completely closed..It's like a squeeking noise when the car starts hitting some rough road....I mean I live in Brooklyn NY and Allthough I don't puposely drive over crappy roads sometimes it's inevatable...

Is this a common issue with the C-4?

Maybe I wil spray all the contact points with WD-40 and see if that stops most of the squeeking I hear when I hit some rough road...