Located on the top of the dash on the driver's side and visible through the windshield from outside the car.

FIRST DIGIT : Identifies GM Division (4 = Buick)

SERIES	CODE
Skylark Sport Wagon GS Skylark Custom LeSabre LeSabre Custom Centurion Estate Wagon Electra 225 Electra 225 Custom Riviera	D F G H L N P R U V Y

THIRD AND FOURTH DIGITS : identify the body style

BODY STYLE	CODE
2-Door Coupe Station Wagon 2-Seat Station Wagon 2-Seat Sportwagon 2-Door Hardtop 4-Door Hardtop Station Wagon 3-Seat 2-Door Hardtop 2-Door Hartop Convertible 4-Door Sedan 2-Door Hardtop	27 35 36 37 39 45 47 57 67 69 87

FIFTH DIGIT : identifies the engine

ENGINE	CODE
V8-350 2-BC Dual Exhaust V8-350 2-BC V8-350 4-BC V8-350 4-BC Dual Exhaust V8-455 4-BC V8-455 4-BC Dual Exhaust V8-455 4-BC Stage I V8-455 4-BC Stage I	G H J K T U V W

SIXTH DIGIT : identifies the year (2 = 1972)

SEVENTH DIGIT : identifies the assembly plant

ASSEMBLY PLANT	CODE
Southgate, Calif. Framingham, MA Flint, MI Fairfax, KS Wilminton, DE Fremont, CA	C G H X Y Z

LAST SIX DIGITS : Represent the basic production sequence

EXAMPLE :

4	L	39	H	2	H	1000001
Buick Div	Series	Body Style	Engine Code	Year	Asm Plant	Prod Code