2013-2020 GMC Savana 3500 Single Rear Wheels; 3.54" Gear Ratio. 2013-2020 GMC Savana 3500 Single Rear Wheels; 3.42" Gear Ratio. 2003-2020 GMC Savana 3500 For vehicles with dual rear wheels. 2011-2012 GMC Savana 3500 FLEX Dual Rear Wheels; Limited Slip Positraction Axle.
