how much weight do you tow with 1/2 ton gm 5.3l

I had that truck before I got my current Dodge. A 2004 Chevy, crew cab short body. Beautiful truck but not a good tow vehicle

The motor, transmission and rear axle was terrible for towing. And it had the optional heavy duty towing package. My 3500 pound double motorcycle trailer was a chore. Up hills it would downshift to 2nd gear and blow its brains out trying to maintain 45 mph. Gas mileage with this trailer was 9 mpg!