AXLE IDENITIFICATION CODES CONT D INDICATES POSITRACTION 1986 2 73 RATIO GU2 OPTION 3 23 RATIO GU5 OPTION 3 42 RATIO GU6 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 2HD 7 625 2HG 7 625 2HH 7 625 2HV 7 625 2HY 7 625 2HL 7 625 2HP 7 625 2HT 7 625 3 73 RATIO GT4 OPTION CODE RING GEAR 2HC 7 625 2HM 7 625 2HS 7 625 1987 2 73 RATIO GU2 OPTION 3 23 RATIO GU5 OPTION 3 42 RATIO GU6 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 2HP 7 625 4HY 7 625 2HL 7 625 2HT 7 625 2HA 7 625 2HR 7 625 4HV 7 625 2HQ 7 625 4HD 7 625 4HJ 7 625 4HE 7 625 2 77 RATIO GH3 OPTION 3 08 RATIO GU4 OPTION 3 27 RATIO GW6 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 4ET 7 75 4HB 7 625 4EU 7 75 4HF 7 625 3 45 RATIO GM3 OPTION CODE RING GEAR 4EW 7 75 1988 2 73 RATIO GU2 OPTION 3 08 RATIO GU4 OPTION 3 23 RATIO GU5 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 6HE 7 625 GHB 7 625 6HQ 7 625 6HP 7 625 6HF 7 625 6HT 7 625 6HK 7 625 3 27 RATIO GH3 OPTION 3 42 RATIO GU6 OPTION 3 45 RATIO GM3 OPTION CODE RING GEAR CODE RING GEAR CODE RING GEAR 4ET 7 75 6HL 7 625 4EW 7 75 4EU 7 75 7EW 7 75 8EU 7 75 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17F m REV 6 88 47