The Chevy Malibu enters 2009 available in four trims: LS, LT, LTZ, and Hybrid. Standard equipment across the all models includes head-curtain side air bags and front-seat thorax air bags, OnStar Gen 7 with remote diagnostics, and XM Satellite Radio. The OnStar Gen 7 will feature standard an automatic crash notification service and OnStar Turn-by-Turn Navigation – the first factory-installed, fully integrated GPS navigation system from OnStar. StabiliTrak electronic stability control is standard on LT and LTZ models. Choice of economic powertrains will include a 2.4L Ecotec VVT four-cylinder engine, a 3.6L DOHC V-6 VVT engine, and a 36-volt electric motor/generator mated to the 2.4L Ecotec VVT four-cylinder engine on the Hybrid. The Chevrolet Malibu LTZ was last redesigned in 2008; no information is currently available on upcoming changes.