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Old 09-28-2022, 09:33 PM   #20
1976gmc20
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Join Date: May 2015
Location: Montana
Posts: 3,696
Re: Duramax/Allison downshift?

She got it towed back to Gunnison and her mechanic hasn't yet figured out what is wrong with it.

I think based on the symptoms that I would drop the transmission pan and see what it looks like.
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Current/past Chevy/GMC trucks:
1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD

Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner
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