2005 envoy

I would say no way. Looks like an Envoy 4WD has a "tow rating" of 5700lbs and 2wd has 5900lbs. Your trailer will probably weigh about 6000 to 6500lbs ready to camp. That weight will also include 650 to 900lbs of tongue weight. Your hitch may not be rated for it, and with passengers and gear in the vehicle, you will probably exceed the vehicle's gross weight rating and possibly the axle rating.

First things first, welcome! Lots of knowledge here and lots of helpful folks.

You'll have no issues with power and general ability to tow.

To ChooChooMan's point, you have other limitations. I had an '03 Trailblazer. I believe the hitch is rated for 950# with a WD hitch. What concerns me is your payload. Look at the yellow weight sticker in your driver side door jamb. It will list your payload. It might be 1200# or 1300#. That sounds good until you subtract the tongue weight and the weight of the WDH, likely you're looking at close to 900#, which gets subtracted from the payload. Now you have 300# left for your spouse, kids, dog, and "stuff". You can see that you'll most likely exceed your payload rating.

Moreover, that trailer is a bit large for a GMT360 platform. I had an EXT (GMT370) and I would not have towed anything longer than 20/21 foot. If you have the SWB, that KZ is too much trailer for that truck.

As a former Envoy owner towing a 21' hybrid TT, the Envoy wouldn't be up to the task. The soft suspension and 4-speed 4L60E transmission are big drawbacks. You see the replacement tow vehicle in my sig.

Had a 2003 Envoy pulling a 16' Haulmark enclosed with 1 Harley and 2 ATV's. Weight was right at 5,800# by scale. Trans went out at 35,000 while towing through the Smokey's. GM replaced it under warranty. Drove it for another 5 years pulling the trailer many times through mountains. Gave it to our grandson with 148,000 miles. He still drives it, somewhere over the 200k mark now.

We have a 2004 Buick Rainier sister with 5.3 and 3.73's, which is rated to tow 6500. No way would I want to tow that much or length of the trailer you noted. The 360 wheel base is to short. It does turn on a dime and give 9 cents change. Chris

wayy too much trailer.

Not waaay to much trailer, but maybe waaay to much for you to tow with a short wheelbase lighter rig like the Envoy.
Drivetrain is same as a half ton or Yukon/Suburban so you're golden there.
Suspension is another story. Will need some help there no question.
I wouldn't prefer to pull a 24-26' trailer behind a midsize, but pretty sure I've done more with less. At least you got the big V8 to stretch the whole thing straight if the trailer starts driving the truck. And if you don't know what I mean by that, prolly not a good idea to tow something that long.

I have weight distribution and installed a bigger transmission cooler would that help

b75 wrote:
I have weight distribution and installed a bigger transmission cooler would that help

We towed our 21 foot hybrid with our 2003 Trailblazer for 5 years. Our Trailblazer has a 5000 pound towing limit.

Our trailer has a brochure weight of 2886 pounds, the brochure weight does not include any options like A/C propane tanks or battery. Ready to camp our trailer is 4300 pounds.

I installed an extra transmission cooler, and had the transmission serviced every year when we were towing. At that time there were no LT tires in the odd size this platform uses, so I went with the highest load rated P series tires I could get. I also installed heavy duty shocks on the rear.

I was NEVER comfortable towing the trailer with the Trailblazer. The vehicle is too narrow and the wheelbase is too short, anything passing you will cause excessive movement, read SWAY. I only got 7-8 MPG towing, the small tank means frequent fuel stops.

I would say get a larger tow vehicle. But if you decide to do it anyway NEVER tow in overdrive. The OD clutch in the transmission will fail. There are no towing mirrors for the GM 360, we were using the universal strap on mirrors.

Gary

b75 wrote:
I have weight distribution and installed a bigger transmission cooler would that help

NO, still too much trailer.
You'd still need a WDH and trans cooler with a smaller trailer.