Is there any refutation to the Sicilian Grand Prix Attack?

I wouldn’t avoid the Grand Prix because black has two strong replies with e6 or g6 (main lines) followed by a d5 push.

Even a6, b5, B7 as a fun sideline has even chances where you get both bishops x-raying the king side.

Simple flow chart:

Does an opening have a name?

Does that name have the word gambit in it?

If the answer to the first question is yes, and the answer to the second question is no (and even many gambits don't have a true refutation) then it doesn't have a refutation. 

There may be some exceptions (bong cloud maybe, but that's clearly a troll opening). 

IL give you two ways.. very simple.. 

1 .. play the French defence.

2. .. after the Sicilian is played and Nc3 haplens play a6 

Otherwise your dealing with the grandprix attack no matter how you play

#1
"Does there exist any clear refutation to the Grand Prix Attack?"
++ No, but 3...g6 and 3...e6 are fine for black.
"Are there any ways for Black to avoid the Grand Prix altogether?"
++ No, but there is no need to avoid it.

It's easy to avoid all together.  I avoid it all together.  You just have to pick your poison.

My poison is the Winawer, Steinitz, McCutchen, Classical, Tarrasch, Advance, and Exchange!  1.e4 e6!

Fighting the Sicilian With The Grand Prix Attack...

https://www.chess.com/blog/RussBell/fighting-the-sicilian-with-the-grand-prix-attack

see the cited YouTube video by 'ChessCoach Andras'

Ok guys this cracks me up. Hasn’t  the Grand Prix been around since the 1980s as a retort from the English against the Sicilian?

Its nothing to be scared of. Unless my very first chess coach coincidentally being English was a treason. God rest his soul.

GM Hikaru Nakamura and IM Levy Rozman (aka 'GothamChess') say Grand Prix Attack is "Legendary" (@32.12 of video)...

https://www.youtube.com/watch?v=mCVdrmKHdiI

Here is a page of Links on the Gran Prix Attack.

At the Bottom on the Video Links there are Links to 6 Videos either trying to Refute it or ways to play against it.

 Bishops Bounty Gran Prix Attack Page

#10
"Hasn’t  the Grand Prix been around since the 1980s as a retort from the English against the Sicilian?"
The Grand Prix Attack was successful in Grand Prix tournaments in England. Those were Swiss tournaments over a weekend with several games per day and a shorter time control. The original Grand Prix Attack was with Bc4, intending a swift attack with O-O, Qe1, Qh4, f5 etc.  Later the British Grandmasters (Hodgson, Hebden...) shifted to the more positional Bb5 like a Nimzovich Indian Defence in reverse.

No, there is no "refutation".

White's making no effort to hide his intentions by playing the grand-prix attack. He's looking forward to using his f-pawn as a spearhead to breakthrough decisively on the K-side (where black's expected to castle). And also, if this strategy is allowed to play out, it'll more often than not turn out to be really effective.

Keeping that in mind, I would recommend an early ...a6 and b5, followed by a quick Q-side development and ...0-0-0. Then we can attack white's K using the "hook" created by f4 (...g5 etc). Of course, white'll also attack you on the Q-side and the game will be double-edged, but if you're an 1.e4 c5 player then I suppose you'd be at home in such positions.

For me personally it has worked out quite well (when I used to play 1.e4 c5 - I seldom do nowadays), so I'd encourage you to try it at least once to see if it suits you.

Also, the early ...a6 plan is flexible in that black can always go for the typical K-side fianchetto if he feels that white's aggressive intentions can be countered adequately. 

@Optimissed I've given the lines with a4 as well as ...e6 and a quick ...d5 in the notes to the game above. I've also given black's plan against and early f4 by white (the key GPA move) in post #20.

Of course, I'm not a Polugaevsky or Zaitsev, so my opening suggestions need not be the best ever, but this particular line (at least to me) seems effective enough, especially on a psychological level.

I like the early a6 plan, but there is a major weakness that you allow if white is not a hardcore closed sicilian player.

Now there is a weird open sicilian that scores quite well for white. The only drawback for white is that he has to resort to a true closed sicilian, since there wont be a grand prix attack with the knight on e2. So I guess it works as an anti-grand prix.

If black is playing a6 he probably plays some a6-based open sicilian he'll transpose into. Although that a6/b5 line still looks objectively on par with most other sicilians.

If I were a closed sicilian player I'd only play the grand prix vs. 2... d6.

2... a6 line is good, I've played around with it, but ultimately decided it didn't have the bite against g3 systems that 2... e6 has. It's still fine, you get opposing bishops and black has basically equalized, but I love the Korchnoi defense for black... it's very aggressive.

This is true, but I dont think this is the theory position that you are referring to.

Here is the "Main-Line" after 2... d6

Whenever I face the sicilian, I usually play the closed sicilian. And I think the "Kan" setup against the closed sicilian is the most difficult system to face. So I think you have a good plan