09cs

I got a squeak coming from the rear suspension any time I'm doing 30+ over any bump. I looked under, and everything seems to be in order, so not sure what this could be, any suggestions?

09cs

bump, anyone?

Menace

Suspension all stock? I know the Lower Control Arms have a tendency to squeak a lot, but your bump/speed specific squeak .. I dunno.

05gtdriver

Exactly, what are your mods? On my last GT(the 2006) I had Roush springs and an Edelbrock Panhard rod(adjustable & greasable). When the grease would run low, it squeaked & rattled a bit. I'd top off the grease, and viola, like new again. If you've made changes, that's where you need to inspect 1st. Good luck

09cs

Only suspension mod is Eibach pro kit

05gtdriver

Maybe that rear spoiler? That's a heavy piece(compared to stock) maybe it's the reason for the squeak? If you only have springs installed, maybe the isolators aren't up to snuff anymore. I'm just guessing at what it might be, but usually start with any mods you've made to deduce what it could be faster. Best of luck!

Menace

Yeah, recheck your current mods and depending on how old/many miles the car has the suspension parts might need a good lubing to prevent things like this.

09cs

The springs I've had on for probably 15-20k miles.

illini4

Lower control arms. To confirm, shoot some WD-40 or something similar into the bushings - if the squeek stops, that's your problem. You can get a replacement set with hardware from American Muscle for $125 or so. Replacement is fairly easy if you have jack stands and the tools.

BleedinBlue

That is my guess as well.

If the WD40 stops the squeak, grease up the bushings on the control arms. If you can, it'd be a good time to replace the LCA's since you'll be taking them off anyway.

It's a tight area to torque the bolts to the requirement, but it really is as simple as removing and replacing two bolts for each side.