Air on driver's side works for awhile then stops if I shut of engine for a few minutes it fine for awhile

What is your question?

Driver's air shuts off blows hot air no rhyme or reason when it will happen if I shut of motor for a minute and start up again it will be cold

What makes this problem better or worse?

When I drive a long distance now seems more frequent

How long has your 2004 Cadillac Escalade had this problem?

A few months