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Originally Posted by MossRoad
It has the towing package. The oil cooler is in one side of the radiator and the transmission cooler is in the other. It has the larger brakes and trailer wiring in the rear. It is 5.7L engine with the 4L60E transmission. I do not know the axle ratio but will try to find out.
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Mr. MossRoad, if your Suburban has the towing package, I'd think the rating would be higher than 6,000#. The Expedition has a "normal" tow rating of 6,000#. With the tow package (same deal...trans fluid cooler, bigger radiator, different gearing, electric brake pre-wiring) AND with the use of a WD hitch, the tow rating is 9,400#.
I've poked around on the internet searching for some specs on your vehicle to no avail. Dunno why it is such a tough thing to find.
I was going to say your vehicle was rated for well ver 8,000#, but oddly CURRENT, 2008 half ton Suburban is rated for 7,000# to 8,200# depending on configuration. I would have thought it more...
Point is to confirm that a WD hitch is critical for heavy towing. Seems like I've seen more and more "droopy" trucks with the spring mulch coming out. Really scary to see these rigs limp down the highway, dragging their rear bumpers.