1986 REAR AXLE IDENTIFICATION V MODEL CODE RATIO SIZE BRAKE MODEL CODE RATIO SIZE BRAKE C1 BFK 3 73 8 50 11 X 2 EXC 680 C1 BFM 3 73 8 50 11 X 2 W 680 C1 BR3 2 73 8 50 11 X 2 EXC 680 C1 CC3 2 73 8 50 11 X 2 W 680 C1 BS3 3 08 8 50 11 X 2 EXC 680 C1 CD3 3 08 8 50 11 X 2 W 680 01 BT3 3 42 8 50 11 X 2 EXC 680 C1 CF3 3 42 8 50 11 X 2 W 680 C1 BU3 3 73 8 50 11 X 2 EXC 680 C1 BFH 3 73 8 50 11 X 2 W 680 C1 CK3 2 73 8 50 11 X 2 EXC 680 C1 CS3 2 73 8 50 11 X 2 W 680 C1 CM3 3 08 8 50 11 X 2 EXC 680 C1 CT3 3 08 8 50 11 X 2 W 680 C1 CN3 2 73 8 50 11 15 X 2 75 EXC 680 C1 CU3 2 73 8 50 11 15 X 2 75 W 680 C1 CR3 3 08 8 50 11 15 X 2 75 EXC 680 C1 CW3 3 08 8 50 11 15 X 2 75 W 680 C1 BX3 2 73 8 50 11 15 X 2 75 EXC 680 C1 CJ3 2 73 8 50 11 15 X 2 75 W 680 C1 BY3 3 08 8 50 11 15 X 2 75 EXC 680 C1 AZ3 3 08 8 50 11 15 X 2 75 W 680 C1 BZ3 3 42 8 50 11 15 X 2 75 EXC 680 C1 BA3 3 42 8 50 11 15 X 2 75 W 680 C1 CA3 3 73 8 50 11 15 X 2 75 EXC 680 C1 BFJ 3 73 8 50 11 15 X 2 75 W 680 C1 BFN 3 73 8 50 11 15 X 2 75 EXC 680 C1 BFR 3 73 8 50 11 15 X 2 75 W 680 C1 HMR 3 42 8 50 11 15 X 2 75 EXC 680 C1 HMS 3 42 8 50 11 15 X 2 75 W 680 C2 BCY 3 73 9 50 11 15 X 2 75 EXC 680 C2 BFC 3 73 9 50 11 15 X 2 75 W 680 C2 BCZ 4 10 9 50 11 15 X 2 75 EXC 680 C2 BJA 4 10 9 50 11 15 X 2 75 W 680 C2 808 3 23 9 50 11 15 X 2 75 EXC 680 C2 BBF 3 42 9 50 11 15 X 2 75 W 680 C2 BBJ 3 42 9 50 11 15 X 2 75 EXC 680 C2 BBH 3 42 9 50 13 X 2 5 W 680 C2 BDC 3 23 9 50 13 X 2 5 EXC 680 C2 BJB 4 10 9 50 13 X 2 5 W 680 C2 BBK 3 42 9 50 13 X 2 5 EXC 680 C2 GMC 3 73 9 50 13 X 2 5 W 680 C2 BKC 3 73 9 50 13 X 2 5 EXC 680 C2 GMF 4 10 9 50 13 X 2 5 W 680 C2 BKD 4 56 9 50 13 X 2 5 EXC 680 C2 BDA 3 73 9 50 13 x 2 5 W 680 C2 BKC 4 56 9 50 13 X 2 5 EXC 680 C2 GMJ 3 73 10 50 13 X 2 5 W 680 C2 GMA 3 21 9 50 13 X 2 5 EXC 680 C2 GML 4 10 10 50 13 X 2 5 W 680 C2 GMB 3 73 9 50 13 X 2 5 EXC 680 C2 6MN 4 56 10 50 13 X 2 5 W 680 C2 GMD 4 10 9 50 13 X 2 5 EXC 680 C2 GBH 4 56 10 50 13 X 2 5 W 680 C2 BFA 3 73 9 50 13 X 2 5 EXC 680 C2 GBJ 3 73 10 50 13 X 2 5 W 680 C2 GM6 3 21 10 50 13 X 2 5 EXC 680 C2 GBK 4 10 10 50 13 X 2 5 W 680 C2 GMH 3 73 10 50 13 X 2 5 EXC 680 C2 GBL 3 73 10 50 13 X 2 5 W 680 C2 GMK 4 10 10 50 13 X 2 5 EXC 680 C2 GBM 4 10 10 50 13 X 2 5 W 680 C2 6MM 4 56 10 50 13 X 2 5 EXC 680 C2 GBN 4 56 10 50 13 X 2 5 W 680 A C2 GBA 3 21 10 50 13 X 2 5 EXC 680 C2 GBB 3 73 10 50 13 X 2 5 EXC 680 C2 GBC 4 10 10 50 13 X 2 5 EXC 680 l C2 GBD 3 21 10 50 13 X 2 5 EXC 680 C2 GBF 3 73 10 50 13 X 2 5 EXC 680 C2 686 4 10 10 50 13 X 2 5 EXC 680 C3 GCL 3 73 10 50 13 X 3 5 EXC 680 C3 6CT 3 73 10 50 13 X 3 5 W 680 C3 GCN 4 56 10 50 13 X 3 5 EXC 680 C3 GCW 4 56 10 50 13 X 3 5 W 680 C3 GGK 3 21 10 50 13 X 3 5 EXC 680 C3 66P 3 73 10 50 13 X 3 5 W 680 C3 GGL 3 73 10 50 13 X 3 5 EXC 680 C3 GGR 4 10 10 50 13 X 3 5 W 680 C3 GGM 4 10 10 50 13 X 3 5 EXC 680 C3 GGT 4 56 10 50 13 X 3 5 W 680 C3 66N 4 56 10 50 13 X 3 5 EXC 680 C3 6GU 3 73 10 50 13 X 3 5 W 680 C3 66F 3 21 10 50 13 X 3 5 EXC 680 C3 66W 4 10 10 50 13 X 3 5 W 680 C3 666 3 73 10 50 13 X 3 5 EXC 680 C3 GGX 4 56 10 50 13 X 3 5 W 680 C3 66H 4 10 10 50 13 X 3 5 EXC 680 C3 GBZ 3 73 10 50 13 X 3 5 W 680 C3 66J 4 56 10 50 13 X 3 5 EXC 680 C3 6CB 4 10 10 50 13 X 3 5 W 680 C3 GBP 3 21 10 50 13 X 3 5 EXC 680 C3 GCC 4 56 10 50 13 X 3 5 W 680 C3 GBR 3 73 10 50 13 X 3 5 EXC 680 C3 GCD 3 73 10 50 13 X 3 5 W 680 C3 6BS 4 10 10 50 13 X 3 5 EXC 680 C3 GCF 4 10 10 50 13 X 3 5 W 680 C3 GBT 4 56 10 50 13 X 3 5 EXC 680 C3 GCG 4 56 10 50 13 X 3 5 W 680 C3 68U 3 21 10 50 13 X 3 5 EXC 680 C3 HFA 3 73 10 50 13 X 3 5 W 680 C3 GBW 3 73 10 50 13 x 3 5 EXC 680 C3 HFC 4 56 10 50 13 X 3 5 W 680 C3 GBX 4 10 10 50 13 X 3 5 EXC 680 C3 HFD 5 13 10 50 13 X 3 5 W 680 C3 68Y 4 56 10 50 13 X 3 5 EXC 680 C3 BFT 3 73 10 50 13 X 3 5 DANA C3 HCZ 3 73 10 50 13 X 3 5 EXC 680 C3 BJK 4 10 10 50 13 X 3 5 DANA C3 HFB 4 56 10 50 13 X 3 5 EXC 680 C3 BKK 4 56 10 50 13 X 3 5 DANA I 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52R 34 REV 1 88