Thread: P0446 mil
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Old 04-27-2019, 04:16 PM   #11
1976gmc20
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Join Date: May 2015
Location: Montana
Posts: 3,696
Re: P0446 mil

I dunno, but my former neighbors said they spent a fortune repeatedly at a shop to fix this problem on their Tahoe, so much so that they traded it in for a Ford! And then they finally sold out and moved to town so maybe they had the problem with that, too?

The old fellow at the former GMC dealership in town (lost his franchise under the great bail out) said there was no permanent fix and to just delete the code but keep checking it when the light comes back on just in case it's something else more serious next time.
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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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