CREEKY MAXIMUM MOTORSPORTS EXTREME DUTY CONTROL ARMS PISSING ME OFF!

Funny, because I've never heard a peep out of mine. Like others said, you should try tightening the control arm bolts when the axle is loaded. The car doesn't have to be on the ground, but the axle must be bearing weight. The easiest way to do this would be to jack the car up and put jack stands under the rear axle.
 
Funny, because I've never heard a peep out of mine. Like others said, you should try tightening the control arm bolts when the axle is loaded. The car doesn't have to be on the ground, but the axle must be bearing weight. The easiest way to do this would be to jack the car up and put jack stands under the rear axle.

I just loosened my rear control arm bolts, regreased them with some heavy Lucas grease, then re-tightened them with the car backed up on ramps. It's quiet again, but we'll see for how long.