How much will it tow? -- 2004 GMC Sierra 1500 4.8 / 4L60E
This question is mostly academic in nature, as I don't have any specific, immediate or even near-future plans to tow anything "heavy" with this truck. I have almost no experience towing, and I think it was all just tow-strap towing around town/back roads: a '79 VW Rabbit with my '89 Cherokee on 31's, and a 90's Honda Civic with my '94 Sierra 1500 on stock tires. The Jeep got hot (but may have had some cooling system issues anyway...); the GM had no issues. Anyway, I digress; the point is, don't flame me for my ignorance, haha!
My truck has a Curt Xtra Duty tow hitch receiver that's rated for WAY more than this truck could ever tow, so no issue there. IIRC (without looking it up right now), the stock truck (with 3.73 gears, as mine has) is rated to tow 7,500 pounds. However, stock, the truck comes with 30.5" tires. Mine has 33" tires and a 2" lift. With these tires, I would guess the final drive is probably not too different from stock tires with 3.23 gearing... Additionally, the 4.8 is pretty dang weak at or below about 2,000 RPM (doesn't really start to make any decent power until 2,500+), and first gear is tall enough to do about 45 mph. So yea, the combination of the motor's meager low-RPM performance, the bigger tires, and the already-tall first gear, make for a not-so-good setup to ever do any real towing. It's sluggish enough right off the line that I feel like it might really struggle trying to even get moving at all from a stop with 7,500 pounds hooked up, LOL. I think second gear would do fine once I got moving: 55 mph = 3,500 RPM (should be enough power to get up steep hills with that weight).
Anyway, just wondering, what do you think I should be able to tow with this setup? Could I actually get away with hauling 7,500? 5,000? less?? Okay for once-in-a-while tow for an hour? Great way to roast my trans in 100 miles? LOL...
Again, this is really more of a curiosity, at this time at least, but I would just like to know.