I found it, it’s only taken me 6-7 months. I have a 2001 Silverado 2500 HD. There is a panel to the left of the brake pedal behind a black box. My manual indicated there was a Inadvertent Power Relay there. (Thank you Hanes manual).
I have had a parasitic drain for the past 6-8 months. Driving me NUTS! I pulled the relay tonight we’ll see if the battery is dead in the AM or not.