Review on Enhance your vehicle's performance with ACDelco GM Original Equipment Rear Air Lift Shock Absorber 580-1093 by Jeff Westra

The dealer told me not to buy this as it is not a GM part and will not fit without some modifications. I took the opportunity and bought the parts (Dorman 949-001 suspension air compressor, AC Delco 580-433 GM front shock absorbers/struts and AC Delco 580-1093 GM rear shock absorbers/struts). I asked the dealer to supply the parts and they said these are correct GM parts and they fit correctly. I can confirm that this seller has the right hardware.