TRANS AM WORLD

3/21/2019 09:51:33 AM

To determine check digit (9th digit) of your car you need to take the VIN and assign any letters in the VIN with a set value (number) as follows:

A = 1, B = 2, C = 3, D = 4, E = 5, F = 6, G = 7, H = 8, J = 1, K = 2, L = 3, M = 4, N = 5, O = 6, P = 7, R = 9, S = 2, T = 3, U = 4, V = 5, W = 6, X = 7, Y = 8, Z = 9Any numbers in the VIN remain the same (not replaced) and thus you have a 17 digit number.

Then you must multiply each of the 17 digits by a set "weight" (multiplier). The weight applied to each digit is as follows:

1st = 8, 2nd = 7, 3rd = 6, 4th = 5, 5th = 4, 6th = 3, 7th = 2, 8th = 10, 9th = 0 (check digit), 10th = 9, 11th = 8, 12th = 7, 13th = 6, 14th = 5, 15th = 4, 16th = 3, 17th = 2After multiplying each VIN digit by the associated weight - add up the results of all 17 products. Then divide by 11 and the remainder is your check digit.

If the remained is 10, then the check digit is 'X'.

Here's an example: VIN = 1G1BL52P7TR115520 (note '7' is the check digit)

VIN 1 G 1 B L 5 2 P 7 T R 1 1 5 5 2 0 Assigned Values 1 7 1 2 3 5 2 7 7 3 9 1 1 5 5 2 0 Multiplier 8 7 6 5 4 3 2 10 0 9 8 7 6 5 4 3 2 Add the products: (1 X 8) + (7 X 7) + (1 X 6) ... (0 X 2) = 337Divide 337 by 11 which gives you 30, and a remainder of 7 which is the same as the 9th digit of the VIN.

[ Home ]

MENU

1st Gen History

2nd Gen History

3rd Gen History

4th Gen History

4th Gen Numbers Break Down

Firebird VIN Decoding

1970-74 Firebird Trim Decoding

1969 Body Tag Form

1969 Body Tags

67-69 Firebird Stats

Early 2nd Gen Features

1980-81 Turbo Trans Am Registry!

80-81 Turbo TA Search

2002 TA Production Numbers

2002 Firebird Specifications

1967-1981 Firebird Production Numbers

Reader's Rides

Favorite Books Of Trans Am World

Contact Me

Home

1970-74 Registry

1970-74 Registry Search

SD 455 Registry

Wallace Racing