I'm trying to find a right rear shock for my 2007 Saturn Sky base model. I've been told that GM no longer makes the part and I haven't been able to find one anywhere. Any suggestions?

 

Buy a PAIR of aftermarket.

 

I'm not sure what to buy or where to buy it. I've tried many different sites and have had no luck.

 

I was digging on your behalf but no luck unless you want used ones off eBay..

Do you belong to any Sky forums?

Those folks must have found a solution to this by now, or a secret source

 

ZZPerformance lists aftermarket struts that fit both the Sky and the Pontiac Solstice, the same sets. I would check to see if the Pontiac Solstice rear struts will work. Rock auto lists rear struts for the Pontiac but not the Sky.
Both of these cars are GM Kappa chassis cars. There are a couple other Kappa chassis cars worldwide and they all share suspension pieces.