I know if you are flying GOL and continuing to the USA or going from the USA and flying GOL as the last leg(s) of your USA-Brazil fright you are allowed the DL baggage allowance on the GOL flights.
GOL has a freuquent flier program called SMILES and they allow additional kgs of checked baggage allowance based on your tier, but GOL is a DL codeshare partner but not a sky team member, I was told 23 kg (50 pounds) for checked baggage in Brazil and 5 kg. (11 pounds carryon)
That carryon allowance, 5 kg is about the weight of my carryon roller board bag without anything in it. I guess the most you can carryon is a light backpack or small computer bag.
RC