Programming an original key to work with the 2011- Aveo

[Freeday]

Hi there!

I got a spare flip key for my Aveo as it only came with a flip and a normal one.
How can i program the new key? Pls don't tell me to go to the garage as it usually
is easy as hell if you already have one. Any advice?

THANKS in advance

Best regards
S.

[Freeday]

any ideas?