New 2021 Silverado 1500 Duramax purchased July, 20, 2021 - Left on Business Trip on July 22nd - 1st cranking issue timed out in about 20-30 seconds just under 1000 miles. Second time, same timeout scenario with less than 2000 miles. Initially stopped on trip at closest Chevrolet Dealer (Jeff Wyler Chevrolet south of Columbus) - could not duplicate issue. Truck currently with my local purchasing dealer since Monday, no codes being thrown, not able to duplicate. Very frustrating on a brand new-high dollar LTZ!