1999 GMC Suburban Ring and Pinion Set C1500 Suburban - RWD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Rear guaranteed to replace your current 1999 GMC Suburban Ring and Pinion Set C1500 Suburban - RWD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Rear. 1999 GMC Suburban Ring and Pinion Set comes new OEM 1999 GMC Suburban Ring and Pinion Set aftermarket new 1999 GMC Suburban Ring and Pinion Set of remanufactured 1999 GMC Suburban Ring and Pinion Set C1500 Suburban - RWD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Rear.