Buick codes

[buickbob]

I need to know to find out what the production codes mean and also how to decode the vin.Can any one help me car fax, I tried several times and it wouldn't let me past the vin. Thanks Bob

 

[mikec1969]

The best site I've found for RPO codes is:http://www.gnttype.org/numbers/rpo.html
Good luck.

 

[buickbob]

The best site I've found for RPO codes is:http://www.gnttype.org/numbers/rpo.html
Good luck.

Thanks for the info. What I'm trying to find is the axel code . They only show three gu4,gu5,gu8.Would you know any more?

 

[mikec1969]

GM8= 2.56 axle ratio.
GU6= 3.42 axle ratio.
G80= Limited-slip differential.

I believe most T/R's came with the GU6 3.42.

Mike C.

 

[buickbob]

Thanks for the info. What I'm trying to find is the axel code . They only show three gu4,gu5,gu8.Would you know any more?

Thanks Mike