transmission slip????

[05 1500HD]

I have a 2014 Silverado 5.3 with 61,xxx miles on it.  This past Friday I was at a stoplight and as I was turning left and I'm assuming it was changing from first gear to second because I had to drive forward past the median to go in the direction I was supposed to go.  During the shift my rpms went up for a second between 2,000 and 3,000 then it shifted into second gear.  Is my transmission slipping or was this one of the V4/V8 issues?  I've had this truck for about 3-4 months now and this is the only time it has happened and hasn't done it since.  I hope I haven't confused everyone by trying to explain it. Any help would be appreciated.  

[1SLOW1500]

V4 mod in afm/dod. Slip. Demand and line pressure. Very common. Fist thing we change in tuning.

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[1SLOW1500]

Forgot fuel cut out.

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[05 1500HD]

Thanks for your help, so I shouldn't worry about it?  How would I fix this issue?

[Ohiozr2]

On 2/5/2019 at 10:25 AM, 1SLOW1500 said:

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Mines doing something similar, 2015 with 52k. I would be interested in knowing what the answer is. Going to take it into the dealer next week

[1SLOW1500]

Mines doing something similar, 2015 with 52k. I would be interested in knowing what the answer is. Going to take it into the dealer next week

They will run codes see none and test drive it. Then return keys and say it's normal.

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