I was pretty impressed with my new GTA at how little it rattled when I got it, but there is one big one that I cant seem to figure out what it is.

It only happens when I hit a fairly decent size bump. It makes a solid thud from what sounds like the door latch/striker bolt area. The hinges are good and the door stays latched good. The rear suspension is nice and solid, the trans crossmember has a new poly mount. So Im fairly sure it isnt coming from under the car.

Have any of you had this problem on your car? If so what was worn out/broken and what did you do to fix it? Thanks for the help.

-Adam

 

Nobody's got a thud in their door huh?

 

Well does anybody know what exactly loosens up within the door latch that would hold the striker bolt tight?
Is there a bushing or wear part that can be replaced?
Or do I have to replace the whole door lock assembly?
I would like to know what parts I may need before I tear it apart because it needs to sit outside (under a cover of course ) and the doors need to be shut tight. So if I have the parts before hand I can always take something back and not have the door hanging open. Any help anybody can give would be appreciated.

 

do you have t-tops?

do you have power windows?

can u reproduce the sound by banging or "wiggling" the door?

 

It's likely your door pin/bushings. I had this problem with my car. I couldn't figure out where the thud was coming from because the hinges seemed tight when the door was opened. I figured it out by shutting the door with the window open and tried lifting the door. There was enough play that the door would "bounce" over big bumps and give a thud sound. Note: I wouldn't do it when the window was up though. The window put enough pressure on the door to keep it from bouncing. HTH

 

I'll have to try that out, I didnt think the window would put enough pressure on it so you couldnt feel it, but apparently it can. Thanks for the replies.

Oh and I have no t-tops, and yes it does have power windows. But I've heard a loose window mechanism before and it doesnt have the sharp chatter sound of a loose window or track.

Has anybody ever had a problem with the hatch pull down motor not holding the hatch tight enough and getting a thud over bumps?