Zeta and Epsilon II both come to mind as platforms that needed weight reduction yesterday. It's one of the main problems with the new Malibu.
FenwickHockey65's GM Thread!
My Cars: 2003 GMC Envoy SLE, 2000 Ford Ranger XLT (State-issued)
Extended Family: 2013 GMC Terrain SLE, 1998 GMC Sonoma SLS Extended Cab