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Old 10-15-2022, 03:18 PM   #25
1976gmc20
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Join Date: May 2015
Location: Montana
Posts: 3,696
Re: Duramax/Allison downshift?

Quote:
Originally Posted by hatzie View Post
Don't think I'd take a trailer full of live animals on a drive like that without a backup tow machine following me.

If she got a slug of bad fuel it's entirely possible to have strange symptoms from the PCM frantically modifying parameters to fix it.
Or some other fuel system problem. It is frustrating when one minor problem can now (well, last 20 years or so) create a bunch of other unrelated problems.

She literally lives at the foot of this pass. So she could drive up to the top and turn around and come back down the same way, or turn around at one of the pull-offs part way up the ten mile or so grade. I agree dead weight would be better.

(sorry I don't have notifications turned on and I don't check in here very often anymore)
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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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