Forum Discussion
intheburbs
Oct 28, 2014Explorer
I would definitely stay closer to 4500 lbs. You'll exceed the 4000 lb rear axle rating long before you get anywhere near a 7500 lb trailer.
I pulled a 5500-lb trailer on many long trips with my 2001 Suburban (5.3, 4.10), including a trip out west to Yellowstone.
Going over the mountain passes (~9000 ft elevations), the best we could do was first gear and 25 MPH. We tried to do that in the evenings, to minimize our impact on the flow of traffic.
I also broke the rear axle while towing the trailer. Twice. Hence the upgrade to the 08 2500.
You should seriously consider upgrading your tow vehicle. A 5.3 with the 4-speed and a 3.42 rear is going to be a complete dog, especially in the Rockies.
I pulled a 5500-lb trailer on many long trips with my 2001 Suburban (5.3, 4.10), including a trip out west to Yellowstone.
Going over the mountain passes (~9000 ft elevations), the best we could do was first gear and 25 MPH. We tried to do that in the evenings, to minimize our impact on the flow of traffic.
I also broke the rear axle while towing the trailer. Twice. Hence the upgrade to the 08 2500.
You should seriously consider upgrading your tow vehicle. A 5.3 with the 4-speed and a 3.42 rear is going to be a complete dog, especially in the Rockies.
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