Won't start sometimes. Turn the key nothing. Dash lights work . Could it be the ignition switch

What is your question?

This problem just occurred recently. Other times it starts right up 99% of the time. I was at work the other day and started my truck and drove it about 300 yards. I turned it off. I was gone for 5 minutes. Came back to my truck and it would't start. I waited about 5 minutes and then it started.

What makes this problem better or worse?

no

How long has your 1998 GMC C1500 had this problem?

Twice within the last week. Never before