1988 REAR AXLE IDENTIFICATION z MODEL CODE RATIO SIZE BRAKE MODEL CODE RATI6 SIZE BRAKE R1 KKK 2 73 8 50 11 15 X 2 75 EXC G80 R1 KKP 2 73 8 50 11 15 X 2 75 W G80 R1 KKL 3 08 8 50 11 15 X 2 75 EXC G80 R1 KKR 3 08 8 50 11 15 X 2 75 W G80 R1 KKM 3 42 4 8 50 11 15 X 2 75 EXC G80 R1 KKS 3 42 8 50 11 15 X 2 75 W G80 R1 KKN 3 73 8 50 11 15 X 2 75 EXC G80 R1 KKT 3 73 8 50 11 15 X 2 75 W G80 R2 GUK 3 42 9 50 13 X 2 5 EXC G80 R2 GUY 3 73 10 50 13 X 2 5 W G80 R2 GUL 3 73 9 50 13 X 2 5 EXC G80 R2 GUZ 4 10 10 50 13 X 2 5 W G80 R2 GUM 4 10 9 50 13 X 2 5 EXC G80 R2 GTX 3 73 10 50 13 X 2 5 W G80 R2 GUN 4 56 9 50 13 X 2 5 EXC G80 R2 GTY 4 10 10 50 13 X 2 5 W G80 R2 GUW 3 73 10 50 13 X 2 5 EXC G80 R2 GTZ 4 56 10 50 13 X 2 5 W G80 R2 GUX 4 10 10 50 13 X 2 5 EXC G80 R2 KCZ 3 42 9 50 11 15 X 2 75 W G80 R2 GTT 3 73 10 50 13 X 2 5 EXC G80 R2 KDA 3 73 9 50 13 X 2 5 W G80 R2 GTU 4 10 10 50 13 X 2 5 EXC G80 R2 KDE 4 10 9 50 13 X 2 5 W G80 R2 GTW 4 56 10 50 13 X 2 5 EXC G80 R2 KDC 4 56 9 50 13 X 2 5 W G80 R2 KRC 3 42 10 50 13 X 2 5 EXC G80 R2 KRD 3 42 10 50 13 X 2 5 W G80 R2 KRF 3 42 10 50 13 X 2 5 EXC G80 R2 KRG 3 42 10 50 13 X 2 5 W G80 R3 GDP 3 73 10 50 13 X 2 5 EXC G80 R3 GWU 3 73 10 50 13 X 2 5 W G80 R3 GDR 4 10 10 50 13 X 2 5 EXC G80 R3 GWW 4 10 10 50 13 X 2 5 W G80 R3 GDS 4 56 10 50 13 X 2 5 EXC G80 R3 GWX 4 56 10 50 13 X 2 5 W G80 R3 GWR 3 73 10 50 13 X 2 5 EXC G80 R3 GXU 3 73 10 50 13 X 2 5 W G80 R3 GWS 4 10 10 50 13 X 2 5 EXC G80 R3 GXW 4 10 10 50 13 X 2 5 W G80 R3 GWT 4 56 10 50 13 X 2 5 EXC G80 R3 GXX 4 56 10 50 13 X 2 5 W G80 R3 GWZ 3 73 10 50 13 X 2 5 EXC G80 R3 KRJ 3 42 10 50 13 X 2 5 W G80 R3 GXM 4 10 10 50 13 X 2 5 EXC G80 R3 GXT 4 56 10 50 13 X 2 5 EXC G80 R3 KRH 3 42 10 50 13 X 2 5 EXC G80 V1 KLJ 3 08 8 50 11 15 X 2 75 EXC G80 V1 KLM 3 08 8 50 11 15 X 2 75 W G80 V1 KLK 3 42 8 50 11 15 X 2 75 EXC G80 V1 KLN 3 42 8 50 11 15 X 2 75 W G80 V1 KLL 3 72 8 50 11 15 X 2 75 EXC G80 V1 KLP 3 73 8 50 11 15 X 2 75 W G80 V1 KLS 3 08 8 50 11 15 X 2 75 EXC G80 V1 KLX 3 08 8 50 11 15 X 2 75 W G80 V1 KLT 3 42 8 50 11 15 X 2 75 EXC G80 V1 KLY 3 42 8 50 11 15 X 2 75 W G80 V1 KLU 3 73 8 50 11 15 X 2 75 EXC G80 V1 KLZ 3 73 8 50 11 15 X 2 75 W G80 V1 PBS 2 73 8 50 11 15 X 2 75 EXC G80 V1 PBR 2 73 8 50 11 15 X 2 75 W G80 V2 GZF 3 42 9 50 13 X 2 5 EXC G80 V2 KDH 3 42 9 50 13 X 2 5 W G80 V2 GZG 3 73 9 50 13 X 2 5 EXC G80 V2 KDJ 3 73 9 50 13 X 2 5 W G80 V2 GZH 4 10 9 50 13 X 2 5 EXC G80 V2 KDK 4 10 9 50 13 X 2 5 W G80 V3 GZM 3 73 10 50 13 X 2 5 EXC G80 V3 GZR 3 73 10 50 13 X 2 5 W G80 V3 GZN 4 10 10 50 13 X 2 5 EXC G80 V3 GZS 4 10 10 50 13 X 2 5 W G80 V3 GZP 4 56 10 50 13 X 2 5 EXC G80 V3 GZT 4 56 10 50 13 X 2 5 W G80 V3 GZU 3 73 10 50 13 X 2 5 EXC G80 V3 GZY 3 73 10 50 13 X 2 5 W G80 V3 GZW 4 10 10 50 13 X 2 5 EXC G80 V3 GZZ 4 10 10 50 13 X 2 5 W G80 V3 GZX 4 56 10 50 13 X 2 5 EXC G80 V3 GDN 4 56 10 50 13 X 2 5 W G80 V3 GDP 3 73 10 50 13 X 2 5 EXC G80 V3 GDR 4 10 10 50 13 X 2 5 EXC G80 V3 GDS 4 56 10 50 13 X 2 5 EXC G80 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52R i REV 1 88 37