See Figures 1 and 2
The official vehicle identification number for title and registration purposes is an eleven digit number stamped on a metal tag, which is fastened to the top of the instrument panel. The tag is located on the driver's side, visible through the windshield. The first digit in the vehicle identification number is the model year of the car (0-1970, 4-1974, etc.). The second digit is the assembly plant code for the plant in which the vehicle was built. the third and fourth digits are the body serial code designations (2-dr sedan, 4-dr sedan). The fifth digit is the engine code which identifies the type of engine originally installed in the vehicle (see the Engine Codes chart). The last six digits are the consecutive unit numbers which start at 100,001 for the first car of a model year built at each assembly plant.
See Figure 3
Beginning in 1981, the serial number contained seventeen digits or letters. The first three give the world manufacturer code; the fourth is the type of restraint system; the fifth will remain the letter P the sixth and seventh is the car line, series and body type; the eighth is the engine type; the ninth is a check digit; the tenth is the model year; the eleventh is the assembly plant; the remaining number are the production sequence.