What is the absolute max towing capacity of Sierra 2500HD with the 8.1L/Allison combo?
Can it handle 15k pounds?
Type your VIN in here and it will give you the specs on your vehicle: http://chevroletforum.com/forum/vindecoder.php (it's also in your owner's manual but I know a lot of people don't have those).
From what I read it will pull about 17,000 with that combo of the 8.1 big block and the Allison trans. Also gets into rear end ratios as well.
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