So we have the identical truck but the Chevy version-Trailblazer EXT LS. 5.3 motor and 3.73 rear end. Book says tow cap of 7200 or 7500 lbs. I can't remember which.
Labor Day weekend was our maiden voyage with a 2017 Shadow Cruiser 240BHS. Door yellow sticker says 5,040lbs as built. Based on the gear we moved over from our pup plus what we added I'm figuring around 5700-5800lbs as it sits now.
I've added XL load tires, an auxiliary trans cooler and air bags to the Trailblazer. Hitch is a Blue Ox Sway Pro.
We did 300miles each way thru Texas Hill Country. Once I got the hitch dialed in it towed pretty well. Pulling the bigger hills I slowed to 50-55mph but ran 60-65mph on flat sections with no problems. Mileage was 7-8mpg going out. Coming home we had a nasty head wind so I ran closer to 50-55mph to keep the truck in 3rd gear. That dropped mileage to 6.5mpg.
Is it perfect? Not quite, but seeing as that's our longest trip of the year I was happy with how it performed. I don't feel the need to run out and buy a larger vehicle before the next trip. Anyplace else we'll go in the next year is less than 100 miles away and no hills. It'll be fine for that.
We're already planning to replace the Trailblazer with an Expedition next summer and knew the Trailblazer would only be used for less than a year towing but I may run it longer now. We only have 119k miles and it looks new inside with a little exterior wear. It does so well I kinda hate to replace it.
'17 Shadow Cruiser 240BHS
'08 Toyota Sequoia Platinum
โ07 NBS Silverado 2500 Dmax