Need an owners manual. Anyone have an extra one lying around? What is something like this worth?

 

AFAIK full '89 MY GT manual do not exist. '89 S4 manual was used instead with few page addition giving GT specific details.

 

So any 89 manual would include the GT specific info?

 

No, there's nothing in '89 S4 manual about GT since it came to market six months after manual was printed. GT specific info is at separate thin booklet. There has to be also some part number for it. AFAIK no one has scanned it so its not available as PDF. Most people probably get '90 MY S4/GT manual which has almost all correct technical data. If someone has '89 GT addition and can provide its part number its possible to try to order it and '89 S4 manual. '89 US model part number is WKD 928 021 89. GT addition is most likely also WKD 928 xxx xx style number and has early 1989 printing month. '90 MY US manual is WKD 928 021 90.