I have a 2006 H3 Lux, I have a 7x16 enclosed carson racer trailer, dry weight of the trailer is 2080 lbs packed it will be close to 3300lbs. Wiil I have any problems with towing and is there anything I need to do before hooking it up? Im going to purchase a tekonsha p3 brake controller.

Thanks in advance,

1eye

 

These questions are always difficult to answer. Your essentially looking for someone to give the OK for something they have no first hand experience or knowledge.
There is no way to know what your Hummers history of repairs are or state of suspension or tires. The H3 will theoretically tow this trailer. MHO

 

Welcome to HF. Take a READ of your Owners Manual, that's why they put one in every glovebox. Your described weight is within the listed towing capacity, but you still have to take into consideration GVWR.

Good luck.

 

How does the GVWR play into it? The GVWR is 7000 lbs.

 

If you overload the truck itself, then combined with a trailer that normally is within towing spec, you can still be too heavy (you should not exceed any of the following: GVWR, GCWR, FAWR, or RAWR). Your H3 has the following specs:

GVWR of 5,850 (not 7,000) - This is the maximum allowable weight that your truck should ever weigh including passengers, gear, fuel, etc. (stock curb weight is 4,700, so you can add up to 1,150 lbs of passengers, gear, etc).
GCWR of 9,500 (8,000 if manual transmission) - This is the maximum allowable combined weight of both truck and trailer, fully loaded.
FAWR of 3,050 - this is the maximum weight allowable on the front axle.
RAWR of 3,200 - this is the maximum weight allowable on the rear axle.
Max Trailer Weight of 4,500 (3,000 if manual transmission).

Again, ALL of these numbers are relevant, and NONE of them should be exceeded.

 

Your question is within parameters.

Ways to improve performance.

Keep trailer tires inflated properly. Keep load distributed evenly. Keep accelleration and braking under control for optimal satisfaction.

 

7000 is the GVWR of the trailer, I know the truck is at 5850.

If the GVWR of the truck is 5850 and the trailer is at 7000, those combined are 11,950.

Does that mean I'm over the GCWR?

 

This is easy stuff. Do some "google research."

Simplistically, if you have a trailer within the towing capacity of the vehicle, like yours, but you put four 300# fat guys with another 300# of their stuff in your truck, you still have a problem.
What I was saying is....if your trailer is within weight, that is not the end of the equation, be aware of what you are hauling in the H3 itself.

 

If the trailer is actually loaded to weigh 7,000lbs, then yes; you ARE over the GCWR (9,500) AND you are over the max trailer weight (4,500). But it depends on what your truck and trailer ACTUALLY weigh. If the trailer, as you originally said, weighs in at 3,300 lbs loaded, then you are OK.

This is not rocket science; I've given you all the numbers that you need; Read the explanation of each:

GVWR of 5,850 - This is the maximum allowable weight that your truck should ever weigh including passengers, gear, fuel, etc. (stock curb weight is 4,700, so you can add up to 1,150 lbs of passengers, gear, etc).
GCWR of 9,500 (8,000 if manual transmission) - This is the maximum allowable combined weight of both truck and trailer, fully loaded.
FAWR of 3,050 - this is the maximum weight allowable on the front axle.
RAWR of 3,200 - this is the maximum weight allowable on the rear axle.
Max Trailer Weight of 4,500 (3,000 if manual transmission).

Oh, and there's one more: Your hitch capacity; likely 5,000lb/500lb tongue weight.

Again, ALL of them are relevant and NONE should be exceeded. Is your truck, as loaded, less than 5,850lbs? Yes? Good, so far. Is your trailer, as loaded, less than 4,500lbs? Yes? Good, so far. Is the combined weight of your truck (loaded) and trailer (loaded) less than 9,500lbs? Yes? Good. Congrats; you can tow the trailer.

 

Use this calculator. It will tell you you are way over weight
TowCalculator.com