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1991 Chevrolet Corvette VIN Numbers

1991 COrvette

VIN Range 1G1YY2386M5100001 – 1G1YY2386M5118595 (Corvette Coupe & Convertible)
1G1YZ23J6M5800001 – 1G1YZ23J6M5802044 (ZR-1 Corvette)
1 (First Digit) 1 – United States
G (Second Digit) Manufacturer.  G – General Motors
1 (Third Digit) Manufacturer Division. 1 – Chevrolet
YY/YZ(ZR-1) Make of Car. YY – Corvette  Coupe/Convertible.  YZ – ZR-1 Corvette (Coupe Only)
2/3 (Sixth Digit) 2 – Two Door Hatchback Coupe, 3 – Two Door Convertible
3 (Seventh Digit) Type of Restraint System.  3 – Passive Restraint System.
8/J (ZR-1) Type of Engine. 8 – L98: 5.7 Liter, 350CI Engine with Tuned-Port Injection. J – LT5: 5.7 Liter, 350CI, 32 Valve Engine with Tuned-Port Injection
0/6 (ZR-1) Check Digit.
M (Tenth Digit) The Model Year. J – 1991
5 (Eleventh Digit) Location of the Assembly Plant. 5 – Bowling Green, Kentucky
1XXXXX (Twelfth thru Seventeenth Digits) Production Sequence Numbers.

The last six digits begin at 100001 and run thru 118595, accounting for each of the 18,595 Corvette Coupes/Convertibles built in 1991. Additionally, the last six digits of the ZR-1 VIN begin at 800001 and run thru 803049, accounting for each of the 2,044 ZR-1 Corvette Coupes built in 1991. Each Vehicle Identification Number (VIN) is unique to an individual car.

For all 1991 Corvettes, the Vehicle Identification Number was stamped on a plate on the inner vertical surface of the left windshield pillar visible through the windshield.

Check Digit is used to calculate the characters in the serial number and gives it a single digit code that can be used to verify the serial number is legitimate. (Note: The Check digit number varies depending on each specific VIN number.)