Need to identify part

mikey334

Need to exchange this part on my car but don't know the name of it, whatever it is being that its broken its making my back tire wobble, so right now i have it parked, below are pics, thanks..
http://i.imgur.com/0qfQWBw.jpg
http://i.imgur.com/ADbwcWn.jpg

Also does it look like it was purposely cut by someone?? but most importantly i need the name of the part

imidazol97

Rear axle control arm #30 in the picture?

http://parts.nalleygmc.com/images/parts/gm/fullsize/030204MW07-010.JPG

http://parts.nalleygmc.com/showAssembly.aspx?ukey_assembly=402147&ukey_make=1030&ukey_model=14643&modelYear=2004&ukey_category=19548&ukey_driveLine=11479

Try aftermarket like Moog. I don't see that rockauto.com has it listed correctly.

AND a youtube video showing a related vehicle with a control arm being replaced.

Good luck.