This will show you how to break down your VIN (vehicle identification number) and also give you your engine block ID number...

Characters	Sample VIN	1GT D T 1 8 Z 0 J 8 100001
1,2, 3	1GT Division	1GC = Chevrolet 1GT = GMC
4	D GVW Range and Brake System	B = 3001-4000 Hydraulic C = 4001-5000 Hydraulic D = 5001-6000 Hydraulic
5	T Line and Chassis type	S = 2 wheel drive T = 4 wheel drive
6	1 Series	1 = 1/2 Ton
7	8 Body Type	4 = Pickup 8 = Blazer / Jimmy
8	Z Engine Description	1982 A = 1.9L 4 Cyl B = 2.8L V6 1983 A = 1.9L 4 Cyl B = 2.8L V6 Y = 2.0L 4 Cyl 1984 A = 1.9L 4 Cyl B = 2.8L V6 S = 2.2L 4 Cyl Diesel Y = 2.0L 4 Cyl 1985 A = 1.9L 4 Cyl B = 2.8L V6 E = 2.5L 4 Cyl S = 2.2L 4 Cyl Diesel 1986 & 87 E = 2.5L 4 Cyl R = 2.8L V6 1988 - 90 E = 2.5L 4 Cyl R = 2.8L V6 Z = 4.3L V6 1991 A = 2.5L 4 Cyl E = 2.5L 4 Cyl R = 2.8L V6 Z = 4.3L V6 1992 - 93 A = 2.5L 4 Cyl R = 2.8L V6 W = 4.3L V6 Z = 4.3L V6
9	0 Check digit
10	8 Model Year	C = 1982 D = 1983 E = 1984 F = 1985 G = 1986 H = 1987 J = 1988 K = 1989 L = 1990 M = 1991 N = 1992 P = 1993 R = 1994
11	8 Assembly Plant	B = Baltimore, MD E = Pontiac, MI F = Flint, MI J = Janesville, WI T = Tarrytown, NY V = Pontiac, MI Z = Ft Wayne, IN 0 = Pontiac, MI 1 = Oshawa, ONT, Canada 2 = Moraine, OH 3 = Detroit, MI 4 = Scarborough, ONT, Canada 7 = Lordstown, OH 8 = Shreveport, LA
12-17	100001 Build Sequence Number

Engine Identification Numbers The 6 Cyl engine numbers are stamped on a pad located on the right side of the engine at the rear of the distributor...

S10 = Chevy and S15 = GMC S10 and S15 = 2 wheel drive and T10 and T15 = 4 wheel drive through all years

1.9L VIN code A 4 Cyl 116 CID 1982 s10 & s15 TMA, TMB, TMF, TMK, TML, TMM, TMR, TMS 1983 S10, S15 & T10, T15  UMB, UMC UMD, UMF, UMH, UMJ, UMK, UMM 1984 S10 S15 & T10 T15  FZJ, FZK, FZM, FZN, FZR, FZS, FZT, FZU 1985 S10 & S15 FJJ, FZJ, FZK

2.0L VIN Code Y 4 Cyl 122 CID 1983 S10 S15 & T10 T15 FKM, FKU, FKW, UKA, UKB, UKC,UKD, UKF, UKK, UKM, UKU, UKW, UKX, UKY, UKZ, ULA, ULJ, ULM, UWA, UWB, UWC, UWM 1984 S10 S15 & T10 T15 FKA, FAB, FKC, FKD, FKH, FKZ, FWA, FWB, FWC, FWD, FWF, FWH, FWJ, FWK, FWM, FWN, FWR, FWS, FWT, FWU, FWW, FWX, FWY, FWZ, FXL,FXM, FXS, FXT, FXU,FFX

2.2L Diesel VIN code S 4 Cyl 1984 S10 & S15 FZW, UMU 1985 S10 & S15 FZW, PZW, UMU

2.5L VIN code E 4 Cyl 151 CID 1985 S10 S15 & T10 T15 AAK, AAL, ABM, ABS, AHL, AKA, AKB 1986 S10 S15 & T10 T15 ABM, ABS, B4L, B4M, B4P, B4S, BBK, BBL, BBR,BBS, BBU 1987 S10 S15 & T10 T15 WTC, WTD, WTF, WTH, WTJ, WTK, WTL 1988 S10 S15 & T10 T15 XHF, XHH, XJN,XJP 1989 S10 S15 & T10 T15 ANJ, ANL, TKA, TKC 1990 S10 S15 & T10 T15 BUP, BUR 1991 S10 S15 BUP, BUR

2.5L VIN code A 4 Cyl 151 CID 1991 S10 & S15 CWC, CWD  1992 S10 & S15 CWC, CWD, CXA 1993 S10 & S15 CWC, CWD, CXA

2.8L VIN code B V6 173 CID  1982 S10 & S15  TAD, TAF, TAH, TAJ, TAK, TAL, TAM, TAR, TAS, TAT, TAU, TAW, TAX, TAY, TWA, TWD, TWF, TWH,TWJ 1983 S10 S15 & T10 T15 UNA, UNC, UNR, UNS, UNV, UNZ, UWL, UWZ, UWY, UWZ, UXC, UXD, UXJ, UXK, UXY, UXZ,UYC, UYD, UYF, UYX, UYY, UZB, UZF, UZK, UZM, UZU, UZW 1984 S10 S15 & T10 T15  FXY, FXZ, FYA, FYB, FYC, FYD, FYF, FYH, FYJ, FYK, FYM, FYN, FYR, FYS, FYT, FYU, FYX, FYY, FYZ, FZA, FZB, FZC, FZD, FZF, FZM  1985 S10 S15 & T10 T15  TAA, TAB, TAC, TAD, TAF, TAH, TAJ, TAK, TAM, TAR, TAS, TAT, TAU, TAW, TAX, TAY, TAZ, TBB, TBC, TBD, TBF, TBH, TBN, TBP

2.8L VIN code R V6 173 CID  1986 S10 S15 & T10 T15  GCA, GCB, GCC, GCD, GCF, GCG, GCH, GCJ, UCF, UCH, UCJ, UCK 1987 S10 S15 & T10 T15 FDA, FDB, FDC, FDD 1988 S10 S15 & T10 T15 PCA, PCB, PCC, PCD, PCF, PCH 1989 S10 S15 & T10 T15 TMA, TMB, TMC, TMD, TMF, TMH 1990 S10 & S15 TMA, UJC 1991 S10 & S15 FKJ, UJC 1992 S10 & S15 XHF 1993 S10 & S15 AAZ

4.3L VIN code Z V6 262 CID 1988 S10 S15 & T10 T15  PAN, PBN, PBR, XXC 1989 S10 S15 & T10 T15 THA, THB, THC, THT,THU, THW, XXC 1990 S10 S15 & T10 T15  UTM, UTN, UTP, UUK, UWC, UWD, UWF, UWH, UWJ, UWK, UWL, UWM, UWN XXC 1991 S10 S15 & T10 T15 FLY, FLX, FMK,FMA, FMB, FMC,FMX, UTM, UTN, UTP, UUK, UWC, UWD, UWF, UWH, UWK, UWM 1992 S10 S15 & T10 T15 XFA, XFB, XFC, XFD, XFN, XFS, XFT, XFU, XFY, XJB, XJC, XJD 1993 S10 S15 & T10 T15 AJF, AJH, AJJ, AJK, AJN, AJP, AJS, AJU, AJW, AJX, AJY

4.3L VIN code Z V6 262 CID Turbo 1991 S15 & T15 Turbo 1LD 1992 S15 & T15 Turbo 2LD 1993 S15 & T15 3LD

4.3L VIN Code W V6 262 CID 1992 S10 S15 & T10 T15 XFK, XFW 1993 S10 S15 & T10 T15  AJD, AJL, AJT

Writeup by Jeff Henderson (Diesel)
Info found from LMC, Chiltons, and a few different places on the net...

Back to tech pages menu

Last Modified: 7-13-05 JCH