I need some input please. In the morning when it's been a little cooler than normal. I go to start my tahoe up. Well it will idle hard then stall out. It will do this a few times. When I finally get it to stop. I start driving it down the road and it will stop stalling and act like everything is fine.

 

Could use some OBD II codes.

 

If there is no check engine light on or codes stored in the system then a scan of the ECT would be in order to see what's its reporting when engine is cold.