AXLE IDENTIFICATION CODES CONT D INDICATES POSITRACTION 1988 2 56 RATIO GM8 OPTION 2 73 RATIO GU2 OPTION 2 93 RATIO GW9 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 6GA 7 50 6GB 7 50 6YC 8 50 SGM 7 50 6GN 7 50 SGS 7 50 SGT 7 50 3 08 RATIO GU4 OPTION 3 23 RATIO GU5 OPTION CODE RING GEAR CODE RING GEAR SDG 8 50 SYE 8 50 SLG 8 50 6LJ 8 50 SZE 8 50 6ZV 8 50 G 2 41 RATIO GU1 OPTION 2 56 RATIO GM8 OPTION 3 08 RATIO GU4 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 2AJ 7 50 2AA 7 50 2AC 7 50 2BJ 7 50 2BA 7 50 280 7 50 3 73 RATIO GT4 OPTION CODE RING GEAR 2TF 7 625 2TH 7 625 1989 B 2 56 RATIO GM8 OPTION 2 73 RATIO GU2 OPTION 2 93 RATIO GW9 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR SGM 7 50 6GB 7 50 8HY 8 50 SGS 7 50 6GN 7 50 8YA 8 50 5GO 7 50 SGT 7 50 3 08 RATIO GU4 OPTION 3 23 RATIO GU5 OPTION 3 42 RATIO GU6 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 8DA 8 50 8YG 8 50 8ZC 8 50 808 8 50 8YM 8 50 8ZD 8 50 8LL 8 50 BLM 8 50 8NC 8 50 8ZA 8 50 8ZB 8 50 1991 GENERAL MOTORS SERVICE PARTS 0PERAT ONS CHEVROLET 17W 5 000 5 14 6 91