2016 5.3 Silverado idle rise

[Rickyace09]

My trucks idle does a slight rise in rpm when started during a cold start. It will only do it if I leave the AC on. If the AC is off it will not.  Does it for a quick sec then drops to normal. 

[CamGTP]

Mine does the same thing. If I remote start it while standing outside the truck, it will do the rpm rise once or twice and go back to normal.

[steelerdude15]

My truck did that a few times. I cleaned the mass air flow sensor and throttle body. It stopped after that.

[pokismoki]

yeah the rpm/fan/temp curve is not linear in the software, the colder it get it will run higher rpm's

[Rickyace09]

Come to find out I had the condenser replaced a few months ago and the mechanic never attached air box arm correctly.