1985 REAR AXLE IDENTIFICATION MODEL CODE RATIO SIZE BRAKE MODEL CODE RATIO SIZE BRAKE si C1 CK3 2473 8 50 11 X 2 EXC 680 C1 CR3 3 08 8 50 11 X 2 W 680 C1 CM3 3408 8450 11 X 2 EXC 680 C1 CT3 3 08 8 50 11 X 2 W 680 C1 CN3 2 73 8 50 11 X 2 EXC 680 C1 CC3 2 73 8 50 11 X 2 W 680 C1 BR3 2 73 8 50 11 X 2 EXC CBO C1 CD3 3 08 8 50 11 X 2 W G80 C1 B53 3 08 8 50 11 X 2 EXC 680 C1 CF3 3 42 8 50 11 X 2 W 680 C1 BT3 3 42 8 50 11 X 2 EXC 680 C1 BFR 3 73 8 50 11 X 2 W 680 C1 803 3 73 8450 11 X 2 EXC 680 C1 8FM 3 73 B 50 11 X 2 W 680 C1 BFK 3 73 8450 11 X 2 EXC 6B0 C1 CU3 2 73 8 50 11 15 X 2 75 W 680 C1 BX3 2 73 8 50 11 15 X 2 75 EXC CHO C1 CJ3 2 73 8 50 11 15 X 2 75 W 680 C1 BY3 3 08 8 50 11 15 X 2475 EXC GB0 C1 CW3 3 08 8 50 11415 X 2 75 W 680 C1 BZ3 3 42 8 50 11 15 X 2475 EXC G80 C1 AZ3 3 08 8 50 11 15 X 2 75 VI 680 C1 CA3 3473 8 50 11 15 X 2475 EXC 680 C1 BA3 3 42 8 50 11415 X 2 75 W GB0 C1 BFN 3473 8 50 11 15 X 2 75 EXC 680 C1 BFJ 3 73 8 50 11415 X 2 75 W 680 C1 HMR 3 42 8450 11 15 X 2 75 EXC 680 C1 SFR 3 73 8 50 11 15 X 2 75 W 680 C1 HMS 3 42 8 50 11 15 X 2 75 W 680 C2 BDB 3 23 9 50 11 15 X 2 75 EXC 680 C2 BBE 3 42 9 50 11 15 X 2 75 W GEO C2 BBJ 3 42 9 50 11 15 X 2 75 EXC 680 C2 BEC 3 73 9 50 11 15 X 2 75 W 680 C2 BCY 3 73 9 50 11 15 X 2 75 EXC G80 C2 BJA 4 10 9 50 11 15 X 2 75 W 680 C2 BCZ 4 10 9 50 11 15 X 2 75 EXC 680 C2 BBH 3 42 9 50 13 X 2450 W 680 C2 8KC 4 56 9 50 11 15 X 2 75 EXC 680 C2 BDA 3 73 9 50 13 X 2450 W 680 C2 BDC 3 23 9 50 13 X 2 50 EXC 680 C2 BJ8 4410 9 50 13 X 2 50 W 680 C2 EEK 3 42 9 50 13 X 2 50 V EXC 680 C2 HKD 4456 9 50 13 X 2 50 W 680 C2 EFA 3 73 9 50 13 X 2 50 EXC 680 C2 GMC 3 73 10 50 13 X 2 50 W 680 C2 BJC 4 10 9 50 13 X 2 50 EXC 680 C2 6MP 4410 10 50 13 X 2 50 W 680 C2 GMA 3 21 10 50 13 X 2450 EXC 680 C2 6MJ 3473 10 50 13 X 2 50 W 680 C2 6MB 3 73 10 50 13 X 2 50 EXC 680 C2 6ML 4 10 10450 13 X 2 50 W 680 C2 GMD 4 10 10 50 13 X 2 50 EXC 680 C2 GMM 4 56 10 50 13 X 2 50 W G80 C2 GM6 3 21 10 50 13 X 2 50 EXC 680 C2 6MH 3 73 10 50 13 X 2 50 EXC 680 C2 GMK 4 10 10 50 13 X 2 50 EXC 080 C2 GMM 4 56 10 50 13 X 2450 EXC 680 C3 CDF 3 73 10 50 13 X 3 50 EXC 680 C3 GDG 3 73 10 50 13 X 3 50 W G80 C3 GDC 4 56 10 50 13 X 3 50 EXC 680 C3 GDD 4 56 10 50 13 X 3 50 VI 680 C3 66F 3 21 10450 13 X 3 50 EXC 680 C3 CGR 4 10 10 50 13 X 3 50 W 680 C3 GGG 3 73 10 50 13 X 3 50 EXC 680 C3 66T 4 56 10 50 13 X 3 50 W 680 C3 GGH 4 10 10 50 13 X 3 50 EXC 680 C3 660 3 73 10 50 13 X 3 50 W 680 C3 66J 4 56 10 50 13 X 3 50 EXC 680 C3 GGVI 4 10 10 50 13 X 3 50 Il GB0 C3 66K 3 21 10 50 13 X 3 50 EXC 680 C3 6GX 4 55 10 50 13 X 3 50 VI 680 C3 GGL 3 73 10 50 13 X 3 50 EXC 680 C3 BFT 3 73 10 50 13 x 3 50 DANA C3 CGM 4 10 10 50 13 X 3 50 EXC 680 C3 BJK 4 10 10 50 13 X 3 50 DANA C3 GGN 4 56 10 50 13 X 3 50 EXC 680 C3 BKK 4 56 10 50 13 X 2 50 DANA C3 GGP 3 73 10 50 13 X 3 50 EXC 680 K1 CX3 3 42 8 50 11 15 X 2 75 EXC G80 K1 CZ3 3 42 8 50 11415 X 2 75 W G80 K1 CV3 3 73 8 50 11 15 X 2 75 EXC 680 K1 DA3 3 73 8 50 11 15 X 2 75 W 680 K1 HB3 2 73 8 50 11 15 X 2 75 EXC GEO K1 BH3 2 73 8 50 11 15 X 2475 W G80 K1 BC3 3 08 8 50 11 15 X 2 75 EXC 680 K1 BJ3 3 08 8 50 11 15 X 2 75 W 680 K1 BD3 3 42 8 50 11 15 X 2 75 EXC G80 K1 BK3 3 42 8 50 11415 X 2475 V1 680 K1 BF3 3 73 8 50 11 15 X 2 75 EXC 680 K1 BM3 3 73 8 50 11 15 X 2 75 W 680 K1 BRA 2 73 8 50 11 15 X 2 75 EXC 680 K1 DRB 3 08 8450 11415 X 2 75 V1 680 K1 BSA 3 08 8450 11 15 X 2 75 EXC 680 K1 BSB 3 08 B 50 11 15 X 2 75 W 680 K2 BDD 3 23 9450 11 15 X 2 75 EXC 680 K2 BBA 3 42 9 50 11 15 X 2 75 W 680 K2 BBC 3 42 9 50 11 15 X 2 75 EXC Gil K2 BPD 3 73 9450 11 15 X 2 75 W 680 K2 BCVI 3473 9 50 11 15 X 2 75 EXC 613 K2 GDK 4 10 9 50 11 15 X 2 75 VI 680 K2 GDL 4410 9 50 11 15 X 2 75 EXC 610 K2 EBM 3442 9 50 13 X 2 50 W 680 K2 BDF 3 23 9 50 13 X 2 50 EXC 680 K2 EBF 3 73 9 50 13 X 2450 W 680 K2 BBD 3442 9 50 13 X 2 50 EXC 680 K2 EJD 4 10 9 50 13 X 2 50 W 680 K2 BCX 3 73 9450 13 X 2 50 EXC 680 K2 EHK 4 10 9450 13 X 2 50 EXC 680 K3 GGV 3 73 10 50 13 X 3 50 EXC 680 K3 6HF 3 73 10 50 13 X 3 50 W 680 K3 66Z 4 10 10 50 13 X 3 50 EXC 80 K3 GH6 4 10 10 50 13 X 3 50 W 680 K3 GRA 4 56 10 50 13 X 3 50 EXC 80 K3 GHH 4 55 10 50 13 X 3 50 VI 680 K3 GRB 3 73 10 50 13 X 3 50 EXC 80 K3 GHJ 3 73 10 50 13 X 3 50 VI 680 K3 GRC 4 10 10 50 13 X 3 50 EXC 80 K3 GHK 4 10 10 50 13 X 3 50 VI 680 K3 6HD 4 56 10 50 13 X 3 50 EXC 80 K3 GRL 4 56 10 50 13 X 3 50 VI G80 K3 GWK 3 73 10 50 13 X 3 50 EXC 80 K3 GWN 3 73 10 50 13 X 3 50 VI G80 K3 6VlL 4 56 10 50 13 X 3 50 EXC 80 K3 GWR 4 56 10 50 13 X 3 50 VI 680 K3 BFT 3 73 10 50 13 X 3 50 DANA K3 BJK 4 10 10 50 13 X 3 50 DANA K3 BKK 4 56 10 50 13 X 3 50 DANA i 1990 GENERAL MOTORS SERVICE PARTS OPERATIONS LTTRUCK 52R 5 386 s 1s REV 9 90