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Deciphering the VIN for For 1972-1980 GM Cars

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  1 M 2 7 V A 7 1 0 0 0 0 1
  | | \_/ | | | \_________/
  | |  |  | | |      |
  | |  |  | | |      +------ Production Sequence
  | |  |  | | |
  | |  |  | | +------------- Assembly Plant
  | |  |  | |                  N = Norwood, Ohio, USA 
  | |  |  | |                  U = Lordstown, Ohio, USA 
  | |  |  | |                  1 = Oshhawa, Ontario, Canada
  | |  |  | |                  2 = St Therese, Quebec, Canada
  | |  |  | |                  4 = Scarborough, Ontario, Canada
  | |  |  | |                  7 = Lordstown, Ohio, USA ???
  | |  |  | |
  | |  |  | +--------------- Model Year
  | |  |  |                    2 = 1972
  | |  |  |                    3 = 1973
  | |  |  |                    4 = 1974
  | |  |  |                    5 = 1975
  | |  |  |                    6 = 1976
  | |  |  |                    7 = 1977
  | |  |  |                    8 = 1978
  | |  |  |                    9 = 1979
  | |  |  |                    A = 1980
  | |  |  |
  | |  |  +----------------- Engine Code
  | |  |                       A = 140ci (2.3l) Chevrolet L4 1bbl (1971-1976)
  | |  |                       A = 231ci (3.8l) Buick V6 2bbl (1978-1980)
  | |  |                       B = 140ci (2.3l) Chevrolet L4 2bbl 
  | |  |                       C = 231ci (3.8l) Buick V6 2bbl (1975-1977)
  | |  |                       C = 196ci (3.2l) Buick V6 2bbl (1978-1980)
  | |  |                       F = 260ci (4.3l) Oldsmobile V8 2bbl
  | |  |                       G = 262ci (4.3l) Chevrolet V8 2bbl (1975-1976)
  | |  |                       G = 305ci (5.0l) Chevrolet V8 2bbl (1979)
  | |  |                       H = 350ci (5.7l) Chevrolet V8 2bbl (1975/California)
  | |  |                       I = 151ci (2.5l) Pontiac L4 2bbl 
  | |  |                       K = 350ci (5.7l) Chevrolet V8 4bbl
  | |  |                       O = 122ci (2.0l) Cosworth/Chevrolet L4 EFI 
  | |  |                       Q = 305ci (5.0l) Chevrolet V8 2bbl 
  | |  |                       U = 305ci (5.0l) Chevrolet V8 2bbl 
  | |  |                       V = 151ci (2.5l) Pontiac L4 2bbl 
  | |  |
  | |  +-------------------- Body Type
  | |                          11 = 2D Sedan/Notchback (Vega & Astre)
  | |                          77 = 2D Coupe/Hatchback (Vega & Astre)
  | |                          15 = 2D Station Wagon (Vega, Astre, & Monza)
  | |                          V5 = 2D Panel Wagon (Vega & Astre)
  | |                          07 = 2D 2+2 Hatchback (Monza etc.)
  | |                          27 = 2D Coupe/Notchback (Monza etc.)
  | |
  | +----------------------- Carline Series
  |                            C = Astre
  |                            D = Starfire SX
  |                            H = Vega Panel Wagon \
  |                            H = Astre            |---- Depends on make
  |                            H = Skyhawk          /
  |                            M = Monza 'S' Coupe or Hatch (round lights)
  |                            M = Sunbird 
  |                            R = Monza 2+2 Hatchback (quad lights)
  |                            S = Skyhawk
  |                            T = Starfire 
  |                            V = Vega
  |
  +------------------------- Make
                               1 = Chevrolet
                               2 = Pontiac
                               3 = Oldsmobile 
                               4 = Buick

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