Originally Posted by
SoCal
http://www.aeroportoguarulhos.net/en/guarulhos-airlines says Copa is in Terminal 2. IF you can go through security and passport control at T3, and then make your way airside to T2, you might be able to use the aforementioned lounge. We've gone between T1 and T2 airside, but not T3 to T2.
Yaa... I'm like you. Never done T-3 to T-2. No where could I find information about that. I assume that since CM flies small aircrafts and light on elites, they can use TAM's lounge at T-1 (the one next to the old rusty UA one...). Just a guess...