PIP5480A - Chugging, Stumble, Harsh Tip- In/Tip-Out - Page 2 - Chevy and GMC Duramax Diesel Forum
L5P TSB (service bulletins, recalls, updates) Postings of Tech Service info for any New L5P engine issues.

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post #11 of 13 (permalink) Old 07-21-2019, 06:02 AM
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Join Date: Apr 2019
Location: Sunshine State!
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Talked to dealer about it. It is like a deer staring into the headlights!
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post #12 of 13 (permalink) Old 09-12-2019, 09:00 AM
 
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My 2019 3500 GMC Denali HD is doing the same thing. Jacksonville, FL
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post #13 of 13 (permalink) Old 10-18-2019, 05:13 PM
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Join Date: Nov 2012
Location: Vilonia, AR
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My 2018 and my 2019 have both done this. I have no MIL's though. Talked to the dealer today and he said he thinks the 2019's have a problem with the Throttle Position Sensor and he's going to check it next week. There are times when it's worse than others and I put it in Tow/Haul mode just for the relief. Several times the transmission has down shifted so hard (both 2018/2019) models I swear someone rear ended me. Or it shifts so hard I my u-joints are broken. I never had any of these problems in my 2012 or 2015. I haven't been on the Ford forums but the grass sure is looking greener on the other side. I fell off the Ford bandwagon after my 2004 6.0L fiasco. I can't bring myself to by a Dodge...The definition of "dodge" in the dictionary is "to avoid an encounter with"...
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