What’s the most a 07 Trailblazer 5.3 AWD can tow/stop safely

steel trailer used behind astro van had brakes on the front axel.

new aluminum trailer has no brakes and won't in future, this is a saltwater vessel

don't want another thing to rust.

still awaiting for answers to ?s 2-4

I'd post images however I think it's impossiable here from my PC
Thanks TB