B_N, could you work on a brand new GS1200? Do you have the computers? Serious question.
And if not... 
depends
if its some computer related problem then no - well you can get the gs911 thingy that will tell you more or less what is wrong and you can swop out the parts
but lets face it normal "working" on a bike is
chain oil and filter and plugs and set the valve clearances replacing the odd bearing chains and sprockets water pump flushing radiator etc etc
that is standard across all bikes bmw, ktm even hondas

the other stuff normally does not go wrong - lets face it maybe 1 in 5000+ bikes will give a weird computer problem
and when it does you take it to the dealer other than that its all standard xt500 type stuff
