Chevy and GMC Duramax Diesel Forum - View Single Post - L5P RPM surge during decel
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post #7 of (permalink) Old 11-01-2019, 12:44 PM
mbroomhead
 
Join Date: Nov 2019
Posts: 3
My dealership is outstanding. Plugged in and recorded as It was happening. It is up to GM to fix the code. The current explanation is minor fuel pressure fluctuation. I would not want to be towing down a grade and experience this.
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