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free vin decode for gm 1991

1: U.S. BUILT
G: GENERAL MOTORS
G: SUZUKI
4: BUICK
NC: SKYLARK CUSTOM (4DR)
5: FOUR-DOOR SEDAN (GM STYLE 19,69)
1: ACTIVE (MANUAL) BELTS
U: ENG OPT - L68 DISP - 2.5L CYL - L4 FUEL SYS - FI DIV - 2,3,4 PROD IN - U.S.
X: CHECK DIGIT
M: 1991 MODEL YEAR
M: LANSING (A) MI
BuildDate: 1991215