Forum Discussion
frankwp
Jul 06, 2017Explorer
Not an Avalanche, but I've got a 2500HD with an 8.1 & it'll pull my 11,000 lb 5th wheel up 8% grades at the speed limit without too much trouble. But oh, does it ever love to drink.
I think the 8.1 was discontinued around 2006 or so.
I think the 8.1 was discontinued around 2006 or so.
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