This is good information but I wanted to show how this has changed a bit in recent years. It's not nearly the gain it was in the past.
Starting in 2019 the max trailering package has had diminishing returns for total payload, is it worth it? Whether it is or not is up to you as a buyer. Here are some facts:
Pre-2019 the NHT package netted most truck over 400lbs of extra payload, that's a nice bump and probably worth it. From 2019 on that number has gotten lower and lower. Today if you add the max trailering package to a new Chevy or GMC you are getting an additional 300lbs of GVWR. (Gross vehicle weight rating which is the maximum weight capacity of your truck and
all added items; driver, passengers, gear, tonneau's or canopies etc.) Subtracting your "as shipped" weight of your truck from the GVWR gives you your payload rating.
That package costs $1,125.
It bumps your GVWR from 7,000 to 7,300.
The max trailering package also forces the addition of these following add-ons, the $1,595 is because you can't get the max trailer package with the base 4 cyl turbo.
These add-ons also unfortunately add some weight to the truck, so that 300lbs of GVWR is not translated directly to your payload number. (shown in the chart below)
So, what was once a decent deal with a nice bump to payload has turned into a pricier option that nets less and less returns over the years.
This charts shows those diminishing returns with the 6.2 gas and 3.0 duramax on the base truck with zero options to maximize payload:
You can see in 2019 the payload had a good difference, from then on it's diminished from 430lbs difference to 160lbs on the 6.2. This is due to the standard payload increasing a bit and the NHT addon decreasing.
This chart was taken from this thread which is a good discussion on the NHT package:
I've been looking at Silverado 1500 quite a bit recently as an option to replace my 2013 Ram 1500. I don't think it's likely to work out that I'll find what I'm looking for in Silverado 1500, but while looking at payload stickers for Silverados/Sierras on the internet and asking some local dealer...
www.gm-trucks.com
Also, as
@zonedout pointed out above you will typically hit your max payload, or tongue weight, even with the NHT package before you hit your max trailering capacity. That's pretty similar for all of the manufacturers trucks if you are towing with anything more than just yourself and the trailer.