Call a General Motors dealership with the last 8 digits of your vin # and price up the front struts and ask them what the code is that tells them what suspension package your car came with. With the vin # they should be able to tell you if your car came with the (SSS) option.

Quick and easy way look under the back of the car and if it does you will see air ride shocks and a pump on the rear drivers side tire. ( by the gas tank) and usually when you turn the car on you will hear the air compressor kick on. and for your front struts i would just go look on rockauto.com, dealerships will rip you off badly! hope this helps ya