Is the idle air controll valve removable ?

What is your question?

When its starts cold latley it dosent idle up. It idles down almost dies then idles fine . Has died a few times after idling down the first time but not for a while. Idle air controll valve ? Mass airflow sensor ? Its a 2003 chevy express 3500 6.0

What makes this problem better or worse?

Not sure

How long has your 2003 Chevrolet Express 3500 had this problem?

Couple weeks