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Top : Buick Resource : VIN & Engine Info : All Models :
All GM 1987 up

The GM VIN system for '87 and up passenger cars (earlier VINs differed slightly) works as follows:
VIN Position Description
Position 1 Country of Origin:
1 = U.S.A.
2 = Canada
3 = Mexico
4 = U.S.A.
J = Japan
K = Korea
Position 2 Company built by:
G = General Motors/Suzuki
8 = Isuzu
Y = NUMMI
L = Daewoo
C = CAMI/GM of Canada
Position 3 Make or division:
1 = Chevrolet
2 = Pontiac
3 = Oldsmobile
4 = Buick
5 = Pontiac incomplete vehicle (PAS)
6 = Cadillac
7 = GM of Canada
8 = Saturn
A = Chevy Bus
B = Chevy incomplete vehicle
C = Chevy Truck
D = GMC incomplete vehicle (PAS)
E = Cadillac incomplete vehicle
H = Oldsmobile Multi-Purpose Vehicle (MPV)
J = GMC Bus
K = GMC Multi-Purpose Vehicle (MPV)
L = Buick incomplete vehicle
M = Pontiac Multi-Purpose Vehicle (MPV)
N = Chevy Multi-Purpose Vehicle (MPV)
T = GMC Truck
Y = Pontiac Multi-Purpose Vehicle (MPV)
Positions 4 & 5 Carline/Series: ('91+ B-car only)
1991:
BL = Caprice Sedan/Wagon
BN = Caprice Classic/Caprice Classic LTZ Sedan
BR = Roadmaster Estate Wagon
BP = Custom Cruiser Wagon
BB = Coachbuilder (Limo/Hearse) Wagon
1992:
BL = Caprice Sedan/Wagon
BN = Caprice Classic/Caprice LTZ Sedan
BN = Roadmaster Sedan
BT = Roadmaster Limited Sedan
BR = Roadmaster Estate Wagon
BP = Custom Cruiser Wagon
BB = Coachbuilder (Limo/Hearse) Wagon
1993:
BL = Caprice Classic Sedan/Wagon
BN = Caprice Classic LS/Caprice Classic LTZ Sedan
BN = Roadmaster Sedan
BT = Roadmaster Limited Sedan
BR = Roadmaster Estate Wagon
BB = Coachbuilder (Limo/Hearse) Wagon
1994:
BL = Caprice Classic Sedan/Wagon
BN = Caprice Classic LS/Impala SS Sedan
BN = Roadmaster Sedan
BT = Roadmaster Limited Sedan
BR = Roadmaster Estate Wagon
BB = Coachbuilder (Limo/Hearse) Wagon
1995-1996:
BL = Caprice Classic Sedan/Wagon, Impala SS Sedan
BN = Roadmaster Sedan
BT = Roadmaster Limited Sedan
BR = Roadmaster Estate Wagon
BB = Coachbuilder (Limo/Hearse) Wagon
Position 6 Body style:
1 = 2-door coupe/sedan
2 = 2-door hatchback/liftback
3 = 2-door convertible
4 = 2-door station wagon
5 = 4-door sedan
6 = 4-door hatchback/liftback
7 = 4-door liftback
8 = 4-door station wagon
Position 7 Restraint codes:
1 = Active (manual) belts
2 = Active (manual) belts w/driver & passenger air bags
3 = Active (manual) belts w/driver air bag
4 = Passive (automatic) belts
5 = Passive (automatic) belts w/driver air bag
6 = Passive (automatic) belts w/driver & passenger air bags
Position 8 Engine type: ('91+ B-car only)
P = LT1 5.7L - 260 HP @ 5000, 330 lb-ft @ 3200
W = L99 4.3L - 200 HP @ 5200, 245 lb-ft @ 2400
7 = L05 5.7L - 205 HP @ 4400, 300 lb-ft @ 2800 (9C1 Police)
7 = L05 5.7L - 180 HP @ 4200, 300 lb-ft @ 2800
E = L03 5.0L - 170 HP @ 4000, 255 lb-ft @ 2400
Position 9 Check digit:
This is a VIN checksum used to verify VIN legality.
Position 10 Model year:
A = 1980
B = 1981
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
S = 1995
T = 1996
Position 11 Plant:
A = Lakewood, GA
B = Lansing (Reatta), MI
B = Baltimore (Truck & Bus), MD
B = Pupyong, KOREA
C = Lansing, MI
D = Doraville, GA
E = Linden, NJ
E = Pontiac (Truck & Bus), MI
F = Fairfax II, KS
F = Flint (Truck & Bus), MI
G = Framingham, MA
H = Flint, MI
J = Janesville (Truck & Bus), WI
J = Janesville, WI
K = Leeds, MO
K = Kosai, JAPAN
L = Van Nuys ('82-'92 F-car), CA
M = Lansing, MI
N = Norwood ('82-'87 F-car), OH
R = Arlington (B-car), TX
S = St. Louis (Truck & Bus), MO
S = Ramos Arizpe, MEXICO
T = Tarrytown (Truck & Bus), NY
U = Hamtramck, MI
V = Pontiac (Truck & Bus), MI
W = Willow Run (B-car), MI
W = Iwata, JAPAN
X = Fairfax, KS
Y = Wilmington, DE
Z = Fremont, CA
Z = Spring Hill (Saturn), TN
Z = Fort Wayne (Truck & Bus), IN
0 = Pontiac (Truck & Bus), MI
1 = Wentzville, MO
1 = Oshowa 2, ONTARIO
2 = Moraine (Truck & Bus), OH
2 = Ste. Therese ('93-'96+ F-car), QUEBEC
3 = Detroit (Truck & Bus), MI
3 = Kawasaki, JAPAN
3 = St. Eustache, QUEBEC
4 = Orion, MI
4 = Scarborough, ONTARIO
5 = Bowling Green ('84-'96+ Corvette), KY
5 = London, ONTARIO
6 = Oklahoma City, OK
6 = Ingersoll, ONTARIO
7 = Lordstown, OH
7 = Lordstown (Truck & Bus), OH
7 = Fujisawa, JAPAN
8 = Shreveport (Truck & Bus), LA
9 = Detroit, MI
9 = Tillsonburg, ONTARIO
9 = Oshawa 1, ONTARIO
Positions 12-17 Sequence Number:
100001 = 1st vehicle
200001 = 100001st vehicle, etc.


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