19 90 AXLE IDENTIFICATION CODES INOICATES POSITRACTION 2 73 RATIO GU2 OPTION 2 93 RATIO GW9 OPTION 3 08 RATIO GU4 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 2TM 7 625 2TE 7 625 2MG 8 50 3 73 RATIO GT4 OPTION CODE RING GEAR BMB 8 50 1991 92 3 08 RATIO GU4 OPTION 3 73 RATIO GT4 OPTION CODE RING GEAR CODE RING GEAR 4MF 8 50 4MM 9 50 4ML 9 50 4MH 8 50 1 1992 GENERAL MOTORS SERVICE PARTS 0p nAnON5 CAD LLAC 62D T 92 5 3 5 000