1985 FRONT AXLE IDENTIFICATION R MODEL CODE RATIO HUB TYPE v K1 GPP 2 73 AUTO K1 GPR 2 73 MANUAL K1 GP5 3 0B AUTO K1 GPT 3 08 MANUAL K1 GRB 3 42 AUTO K1 GRD 3 42 MANUAL K1 GRP 3 73 AUTO K1 GRS 3 73 MANUAL K2 GPW 3 23 MANUAL K2 GPY 3 23 MANUAL K2 GPZ 3 42 AUTO K2 GRA 3 42 MANUAL K2 GRF 3 42 MANUAL K2 GRG 3 73 AUTO K2 GRN 3 73 MANUAL K2 GRT 3 73 MANUAL K2 GRU 4 10 AUTO K2 GRW 4 10 MANUAL K2 GRY 4 10 MANUAL MODEL CODE RATIO RR WHEELS SOURCE K3 TBA 3 73 EXC DUAL DANA K3 TBS 3 73 W DUAL DANA K3 TCA 4 10 EXC DUAL DANA K3 TCB 4 10 W DUAL UANA K3 TDA 4 56 EXC DUAL DANA K3 TDE 4 56 W DUAL DANA Ri V 99O GENERAL MOTORS SERVICE PARTS 0PERAT 0NS LT TRUCK 5ZR T Y REV 9 90 s 2 6 008