2006 YUKON DENALI 6.0 LITRE STARTS COLD ON FIRST TURN. THEN NO FIRE

What is your question?

MY YUKON STARTS COLD ON THE FIRST TURN. ONCE IVE DRIVEN IT,IT WILL ONLY START ON THE 2ND TRY ONLY, FIRST TRY NO FIRE JUST ROLLS OVER OFF TRY AGAIN AND STARTS RIGHT UP EVERYTIME

What makes this problem better or worse?

better on cold start

How long has your 2006 GMC Yukon had this problem?

12 months