Listing form says Not A Valid VIN - when the VIN is correct? 1989 Buick


Asked by Aug 27, 2016 at 01:52 PM about the 1989 Buick Century Limited Sedan

Question type: General

1989 Buick 4dr.  VIN 1G4AL51NOK6443179
I get an error saying that the VIN isn't valid

5 Answers


Be very careful..... if you have a bad VIN number, it's a red flag....


VIN number checks with the VIN Breakdown for an 89 Buick. Florida Title issued in 1995 from the original owner.

1 out of 1 people think this is helpful.

Odd - most online VIN decoders don't accept this VIN, and my repair manual shows an error in the 'platform code' of your VIN (4th and 5th digits). But a GM VIN breakdown shows "AL" for Buick Century Limited. The ones shown at Wikipedia indicate a "WS" or just a "Y" for Buick Century. Snafu somewhere...

1 out of 1 people think this is helpful.

Thanks the car is listed For Sale now: Here is what I originally copied off the Title and entered: 1G4AL51NOK6443179 Here is the VIN the form accepted: (which shows up on Carfax) 1G4AL51N0K6443179 My Only Guess Is That The 9th Digit Was A Numeric Zero - Not An Alpha O.

1 out of 1 people think this is helpful.

That is correct. Beginning 1981 the letters "O" and "Q" are not used. HTH. -Jim

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