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So from what I have gathered online, it is an injector(s) issue. I've only had it happen to me twice at that speed but when I came to a stop afterward, my truck was barely idling.
I'm not sure if my sct programmer is able to show injector codes but it will show gp codes.
I guess my question is are failing injectors that intermittent typically? Also, has anyone had much luck with Rev X clearing that issue up?
If you haven't done the blue spring in the regulator or tested the FICM voltages I'd start there. There is detailed info for both in the Tech folder. RevX has helped some trucks, I'd say it's worth a shot as a third item but it's temporary if it does work.
I haven't done the blue spring yet....I keep hearing about it so I should probably get on the research.
I did test the FICM a couple months ago and it didn't drop below 46. I have a shop appointment next week for a diagnosis.
I got ahold of the local Rev x dealer and they are out for a couple weeks.