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Duramax Engine Codes
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<blockquote data-quote="KarlVP" data-source="post: 1527231" data-attributes="member: 16136"><p>So I drove out to VA from WA and halfway through the trip my CEL came on. </p><p></p><p>I scanned the codes and I'm getting an E104, E105, and P700. I have a PPE tune on it and have tried removing the tune, and tuning the truck a different levels. </p><p></p><p>Anything I do, all three codes keep popping up. Sometimes it takes 5 minutes for them to pop up, sometimes it takes a couple (2-3) hours of drive time. </p><p></p><p>The transmission is in a "half assed" tow-haul mode. The allison will kick up the RPM going down hill, and it will hold the RPM's up while accelerating, but when you actually have the truck in tow haul mode, it will not do the "downshift" thing when you are in stop and go traffic. </p><p></p><p>Any thoughts before I take my truck to the hobby shop and start throwing money at it. Remember I'm stuck out here in VA and have limited access to tools and such. </p><p></p><p>It towed a 5K load all the way across country just fine averaging 14MPG. Runs just fine.</p></blockquote><p></p>
[QUOTE="KarlVP, post: 1527231, member: 16136"] So I drove out to VA from WA and halfway through the trip my CEL came on. I scanned the codes and I'm getting an E104, E105, and P700. I have a PPE tune on it and have tried removing the tune, and tuning the truck a different levels. Anything I do, all three codes keep popping up. Sometimes it takes 5 minutes for them to pop up, sometimes it takes a couple (2-3) hours of drive time. The transmission is in a "half assed" tow-haul mode. The allison will kick up the RPM going down hill, and it will hold the RPM's up while accelerating, but when you actually have the truck in tow haul mode, it will not do the "downshift" thing when you are in stop and go traffic. Any thoughts before I take my truck to the hobby shop and start throwing money at it. Remember I'm stuck out here in VA and have limited access to tools and such. It towed a 5K load all the way across country just fine averaging 14MPG. Runs just fine. [/QUOTE]
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