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Old 09-06-2023, 10:14 AM   #2
57taskforce
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Join Date: Jun 2014
Location: Farmington, New Mexico
Posts: 6,261
Re: 2001 2500hd 4x4 grinds while in 2wd high

My father in law had an 01 2500HD with the 8.1 and 263HD (electric shift version of the 261) case. His did what you are describing and I had to do a full rebuild on the case unfortunately. I’d change the fluid and check it real close for metal.
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