Honestly, I've been towing with GMCs for twenty years and unfortunately, the OEM stuff is usually way overpriced for what you get. For your Yukon XL, I'd skip the expensive dealership mirrors and grab the K-Source 80910 Snap-on Towing Mirrors. They’re like $60 and way better than the generic strap-ons that vibrate like crazy on the highway. I tried some cheap ones once and basically couldn't see a thing, so don't make that mistake!!

Also, since you're worried about that integrated brake controller, just go with a Tekonsha 3016-P Brake Control Wiring Adapter if you ever need to swap. It's a plug-and-play solution for like $15 that makes everything play nice without cutting wires. Seriously, don't overspend on the fancy brands when the basic heavy-duty gear works just as well, right?

Hey there, congrats on the new Yukon XL! Honestly, I get it—towing a 26-footer with the family is a big deal, and that long wheelbase can be a blessing and a curse. I've been there, and being a bit cautious is definitely the right move because sway is no joke on the highway.

For your situation, I would suggest focusing on the hitch first. I've tried a few, and here is how I'd break it down:

* Equal-i-zer 4-point Sway Control Hitch 10,000 lbs: This is basically the gold standard for a reason. It's super reliable, but just be careful during setup—it can be loud and a bit stiff.
* Blue Ox SwayPro Weight Distribution Hitch: I find this one a bit easier to hook up and it feels a bit smoother on the turns compared to the Equal-i-zer, though it's still pricey.

Regarding mirrors, the stock ones might technically work, but honestly, you'll have some BLIND spots with a travel trailer that wide. I highkey recommend either the K-Source Snap-on Towing Mirrors for GMC Yukon or just upgrading to the full GM Genuine Parts Trailering Mirrors if you want that factory look.

Also, make sure to double-check your hitch weight once you're loaded. I use the Sherline LM 2000 Trailer Tongue Weight Scale just to be safe. Better to be certain than sorry, you know? Good luck with the camping trip!! 👍

Honestly, since ur hauling a 26ft trailer, safety is HUGE. I'd definitely suggest looking into the Blue Ox SwayPro Weight Distribution Hitch as a solid, budget-friendly alternative for that long wheelbase. Also, basically don't forget a Sherline LM 2000 Trailer Tongue Weight Scale to make sure ur load is balanced before hitting the highway... it's literally a lifesaver for stability. gl!

So I've been reading through all these suggestions because I'm basically in the same boat and super nervous about our first big trip!! It sounds like the consensus is that a heavy-duty hitch and better mirrors are the way to go, comparing the big names like Equal-i-zer versus more budget options. From the market research I've been doing, there's a whole other side to safety that people sometimes overlook—tire monitoring. Since your worried about highway stability, I've been looking into the TireMinder i10 RV TPMS. It seems like a must-have for peace of mind so you know if a trailer tire is losing air before it becomes a disaster. I also noticed the CURT 17500 TruTrack Weight Distribution Hitch is another huge competitor in that space that might be worth comparing to the Blue Ox. Tbh, I'm still a total beginner at this, but it feels like the tech side of towing is just as important as the mechanical stuff. Does anyone know if these smart systems play nice with the GMC dash or do they stay separate? Just want to be as safe as possible out there!!