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10-16-2018, 05:40 AM | #1 | |
AF Newbie
Join Date: Dec 2007
Location: Callao, Missouri
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4L80E Transmission Problems
I have a 2005 2500 HD with 165,000 miles that is giving me strange transmission problems. It all started pulling a trailer with a light load and as it pulled up a hill is shuttered a little bit and then I had to pull over. At this point I had no reverse but I did have forward. Towed the truck home and when it was unloaded it had reverse but not forward. After letting the truck sit overnight it had forward and reverse. I dropped the pan to change the oil and filter and didn't find anything alarming. After changing the oil I drove the truck around and seemed fine, after about 30 mins of driving it heated up and started vibrating and not pulling itself normally. At this point it triggered a code of P0757 which indicates 2-3 shift solenoid fault. Should I change the solenoid or do I have a strange wiring / ground problem?
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10-16-2018, 06:44 AM | #2 | |
A990 racer
Join Date: Mar 2002
Location: Chestertown, New York
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Re: 4L80E Transmission Problems
My concern here is no reverse, that is not controlled by any solenoid. I believe you have more serious internal issues. Easy enough to repl the solenoid Pak, the pcm is indicating a problem there.
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