Vehicle Identification Numbers (VIN codes)/AM General Hummer/VIN Codes

This page is for decoding AM General Hummer & Hummer H1 VINs only. For Hummer H2 & H3, see the GM VIN page.

General Template for AM General Hummer/Hummer H1 VIN format (1992-2006)

Position	Sample	Description
1	1	Nation of Origin
2	3	Manufacturer
3	7	Vehicle type
4	Z	Engine Type
5	A	Transmission
6	8	Model Code & Body Style
7	4
8	3	GVWR
9	0	Check digit
10	Y	Model year
11	E	Assembly Plant
12	0	Production sequence number
13	0
14	5
15	9
16	4
17	3

Nation of Origin

Position 1

VIN code	Description
1	USA

Manufacturer

Position 2

VIN code	Description
3	AM General

Vehicle type

Position 3

VIN code	Description
7	Commercial vehicles

Engine Type

Position 4

VIN	Size	Type	Fuel	Valvetrain	Engine Family/Notes/Applications
X	6.2L	V8	Diesel	OHV	Indirect injection. GM Detroit Diesel V8 (GM RPO code LL4). Version for vehicles over-8,500 lb. GVWR. ('92-'93).
Y	6.5L	V8	Diesel	OHV	Indirect injection. GM Detroit Diesel V8 (GM RPO code L57). Version for vehicles over-8,500 lb. GVWR. ('94-'98).
D	5.7L	V8	Gas	OHV	TBI. GM Gen I Chevrolet Small-Block V8 (GM RPO code L05). (Optional: '95-'96).
Z	6.5L	V8 Turbo	Diesel	OHV	Indirect injection. GM Detroit Diesel V8 (GM RPO code L65). Version for vehicles over-8,500 lb. GVWR. (Optional: '96-'98, Standard: '99 - Mid '01).
F	6.5L	V8 Turbo	Diesel	OHV	Indirect injection. GM Detroit Diesel V8 made by AM General subsidiary General Engine Products LLC. (Mid '01 - '04 & '06 Fleet models).
P	6.6L	V8 Turbo	Diesel	OHV, 32 valve	Common-rail Direct injection. Duramax 6600 V8 engine (GM RPO code LLY). '06 H1 Alpha.

TBI=throttle-body injection

Transmission

Position 5

VIN code	Description
E	GM 3L80 3-speed automatic. ('92-'93).
A	GM 4L80-E 4-speed automatic - electronically controlled. ('94-'04 & '06 Fleet models).
H	Allison 1000 series 5-speed automatic - electronically controlled. ('06 H1 Alpha).

Model Code & Body Style

Position 6-7

VIN code	Description
55	KSC2: 2-Passenger, 2-Door Hard Top w/Enlarged (Extended) Cab - K-series (Commercial/Fleet only model) ('02-'04, '06)
56	KSC4: 4-Passenger, 4-Door Hard Top - K-series (Commercial/Fleet only model) ('02-'04, '06)
57	KSCS: 4-Passenger, 4-Door Enclosed Wagon - K-series (Commercial/Fleet only model) ('03, '06)
82	HMC2: 2-Passenger, 2-Door Hard Top ('92-'93)
82	VLC2: 2-Passenger, 2-Door Hard Top - Value Leader (Recruit Series) ('94-'96)
83	HMC4: 4-Passenger, 4-Door Hard Top ('92-'01 & a single '02 model)
84	HMCS: 4-Passenger, 4-Door Enclosed Wagon ('92-'04)
84	HMDS: 4-Passenger, 4-Door Enclosed Wagon ('06 H1 Alpha)
85	HMCO: 4-Passenger, 4-Door Open Top w/half doors & plastic windows ('92-'93)
85	VLCO: 4-Passenger, 4-Door Open Top w/half doors & plastic windows or optional full-height hard doors & glass windows - Value Leader (Recruit Series) ('94)
85	VLCO: 4-Passenger, 4-Door Open Top w/half doors & plastic windows - Value Leader (Recruit Series) ('95-'96)
86	HMCF: 2-Passenger, 2-Door Hard Top - Fleet/Industrial ('93)
87	HMR2 (VLC2): 2-Passenger, 2-Door Hard Top - Value Leader (Recruit Series) ('93)
88	HMRO (VLCO): 4-Passenger, 4-Door Open Top w/half doors & plastic windows - Value Leader (Recruit Series) ('93)
89	XLC2: 2-Passenger, 2-Door Hard Top w/Enlarged (Extended) Cab ('94-'01)
90	HMCO: 4-Passenger, 4-Door Open Top w/full-height hard doors & glass windows ('95-'04)
90	HMDO: 4-Passenger, 4-Door Open Top w/full-height hard doors & glass windows ('06 H1 Alpha)
91	HMSB: 4-Passenger, 4-Door Slant Back ('00)

GVWR

Position 8

VIN code	Description
3	Class 3: 10,001 - 14,000 lb. GVWR

Assembly Plant

Position 11

VIN code	Description
E	Mishawaka, Indiana