Engine completely seized on [XXX] pulling a trailer and boat. Vehicle was equipped to pull weight. Was stranded with 4 kids with very little cell service for over six hours. Had to tow to nearest dealership (Prescott, az), and had to get a separate towing company to tow our boat to flagstaff, az (40 minutes away). The next business day it was found that something went wrong with the pistons which cussed the entire engine to seize and needed one replaced. I was just outside the manufacturer warranty, and was told it wouldnât be covered by gm. I was initially quoted almost $20,000 for the new engine but Cadillac did offer a âgood faith❠repair. I still had to over $6000 to fix the issue and get it running again. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)