1988 FRONT AXLE IDENTIFICATION MODEL CODE RATIO HUB TYPE wi V1 ZDM 2 73 AUTO V1 ZDN 2 73 MANUAL V1 ZDP 3 0B AUTO V1 ZDR 3 08 MANUAL V1 ZDU 3 42 AUTO V1 ZDW 3 42 MANUAL V1 ZDZ 3 73 AUTO V1 ZFM 3 73 MANUAL V2 ZDS 3 42 AUTO V2 ZDT 3 42 MANUAL V2 ZDX 3 73 AUTO V2 ZDY 3 73 MANUAL V2 ZFN 4 10 AUTO V2 ZFP 4 10 MANUAL MODEL CODE RATIO RR WHEELS SOURCE V3 ZFR 3 73 EXC DUAL DANA V3 ZFS 3 73 W DUAL DANA V3 ZFT 4 10 EXC DUAL DANA V3 ZFU 4 10 W DUAL DANA V3 ZFW 4 56 EXC DUAL DANA V3 ZFX 4 56 W DUAL DANA 11989 FRONT AXLE IDENTIFICATION MODEL CODE RATIO HUB TVPE V1 ZGA 2 73 AUTO V1 ZGB 2 73 MANUAL V1 ZGC 3 08 AUTO V1 ZGD 3 OB MANUAL V1 ZGH 3 42 AUTO V1 ZGJ 3 42 MANUAL V1 ZGM 3 73 AUTO V1 ZGN 3 73 MANUAL V V2 ZGF 3 42 AUTO V V2 ZGG 3 42 MANUAL V2 ZGK 3 73 AUTO V2 ZGL 3 73 MANUAL V2 ZGP 4 10 AUTO V2 ZGR 4 10 MANUAL MODEL CODE RATIO HR WHEELS SOURCE V3 ZFR 3 73 EXC DUAL DANA V3 ZFS 3 73 W DUAL DANA V3 ZFT 4 10 EXC DUAL DANA V3 ZFU 4 10 W DUAL DANA V3 ZFW 4 56 EXC DUAL DANA V3 ZFX 4 56 W DUAL DANA 1 T I990 GENERAL MOTDHS SERVICE PARTS OPERATIONS LT TRUCK 52R Y 6 008 s s REV 9 90