GM Tow haul use - opinions
We picked up our travel trailer today at CW. They set up the weight distributing hitch for us and gave us a lot of instructions on how the accoutrements in the camper work. One thing the guy said th...
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Do not tow heavy with a 4l60E in overdrive, always downshift into 3rd and use tow haul. If you have the 5.3 engine cruise will likely not be very effective as it will want to drop 2nd gear down shifts at the slightest hill or head wind. The 4l60E is the weak link in this setup, I would recommend figuring out a way to monitor transmission temp. The 5.3 is a great engine just be prepared to turn some RPMS in the mountains. I have towed a very similar sized TT with an 2004 Yukon XL 5.3 with 4l60E, it did well in flat Indiana but struggled in the mountains. The transmission let go with 160,000 while climbing in the Smokey Mnts. Had transmission rebuilt and upgraded, it did well with the improvements.
