Suspension noise?

[DCT]

Need some help please. I bought a 2001 Suburban LT about 6 months ago. Suspension is all original. When I drive through small dips or go over speed bumps, I hear one quick squeaking type metallic sound in the rear when the suspension compresses. I can't seem to replicate the noise when the truck is not moving. Not sure if it's a bushing or shock. Are there any common known problem areas I should be looking for? Thanks for the help.

 

[CEN2MENTAL95]

if the truck is leaning on one side more than the other, I would say its bushings

 

[DCT]

No leaning. I just got 4 new tires and alignment, no problem.

 

[waxworkz]

is it metal on metal? like 2 metal parts hitting? or does it sound like metal hitting something else? i have a squeak from my sway bars, but it sounds like rubber twisting. might want to check your u-joints. just my .02¢

 

[iwaslowr]

I've heard of rear springs making noise in their perches if the upper/lower rubber isolators have been removed... if yours are missing or worn this may be the cause.

 

[DCT]

It's a metal to metal sound. U joints seem fine. Never thought about the springs. I will check it out. The truck has 150M miles so thats very possible.

 

[iwaslowr]

Another possibility could be worn bushings for any of the stabilizer bar, trailing arms and panhard bar mounting points.