RPM Jumps during idle

[nj462]

Hey guys,

I recently noticed the RPMs jumping during idle. sometimes it would lower itself and then jump back up and cause the Truck to shake a little.

I am not really sure what is causing this but I recently put in a Cold air Intake system and HID's for the headlights and fogs.

I'm including links to 2 videos of the instrument cluster to show what I am talking about. Hopefully, someone knows what is going on. I have a 2010 Tahoe LT so it is still under warranty, but I 'm not sure if they will give me problems with the warranty since I have the New intake in, anyone have experience with that? Are they going to claim my warranty is void?

Video #1:
http://flic.kr/p/9DWn3r

Video #2:
http://flic.kr/p/9DZgQQ

 

[Fish1]

I just got a 2008 Tahoe Hybrid and mine jumps from auto stop to on and the Tahoe shacks a little as well (the hybrid goes into an auto stop mode when stopped where the engine actually turns off).

I was wondering if this was normal or not. I don't have any mods so I'll bring it in to Chevy and repot back with what they say.