Just some food for thought: you could be fine, or some parts, springs especially, could have gotten fatigued.
Nobody can tell you one way or another, not even if they are a Grand Master Mechanic, or a BB poster
The fact you dont hear anything is a sign nothing broke immediately, but not that something wont break next time you reach red line, if it has weakened. Metal fatigue is not a binary type of proposition a la: it works today so it will work just fine tomorrow. I know semi pro circle track guys who change springs for every race, as a cheap insurance. Usually, 4th to 2nd will grenade a motor in an instant, but perhaps your shift was a lazy one, allowing rpms to drop quite a bit. Regardless,
I wouldn't say you're risk free longer term. My 2 cents.
Then again, you are covered by GM power train warranty, so there is that
Cheers!