If you want to undertake auto repairs to your Suzuki GS 1000 GL then it will always be a good idea to own a Workshop Manual to use as a reference if you want to know techniques to take out a specific component for instance the Drive Shaft and fit it again perfectly.
Suzuki GS 1000 GL Workshop Manuals are able to offer targeted diagnostic guides for the car or truck therefore if something is playing up it will help you figure out what the situation is and ways to repair it. You can then analyse if this can be done by yourself or that the job is too big you are able to book your GS 1000 GL into a trusted friendly mechanic.
Suzuki GS 1000 GL manual