Originally Posted by davel1971
no, you can run at 2500-3000 all day long. Just make sure you have or get a trans cooler. Keep up on maintenance.
Ditto. Get a big one - your tranny will thank you!
I tow a similar package with a 2014 Tahoe with the transmission and oil cooler on a 5.3 liter V-8. It has the heavy duty trailer package and the tow rating is 8200 lbs max (closer to 7000 lbs in reality). In tow/haul mode it runs about 2400-2600 rpm at 65 mph on flat ground. I keep the tranny fluid monitored and when it starts to darken, it gets changed. I also monitor the oil percentage on the console (you might have that on your truck - check the owner's manual).
Watch the temp on long climbs this summer. If the temp starts to climb, turn off the A/C and the temp will normalize.