once GCC Visa expired what is the procedure to renew or extend?

Answer 1

Your question should be more specific. Because the visa rules and regulations are not the same in all GCC countries.

Edit: If you are asking about the Saudi re-entry visa, then you should get a no objection letter from your sponsor addressed to the Saudi embassy for extending the visa. The letter should be attested by the Chamber of Commerce and the Ministry of Foreign Affairs (KSA) prior to to submit to the embassy.

Answer 2

Just go to your country's embassy and tell them that you want your visa renewed and they will do it ( around 2-3 days are what they require ).