So, after today I do have to question this situation, even though I posted a similar story earlier about how I can see it happening because it happened to me. I took my car to the wash today. It's one of those do it yourself places with the brush and high pressure sprayer. I decided to clean under the hood this time since it was dirty from 9,000 miles of driving. I did the engine degreaser, high pressure spray, low pressure spot free rinse, etc. I have the GM Performance intake. You betcha a ton of water went down that tube before the radiator. After I finished washing my truck I got into it and it fired right up. I drove it out of the bay with no difficulty at all. I drove her home, which included surface and interstate driving, and going up and down hills. When I got home I backed her into the driveway. Since then I took my son to the batting cages, took him to dinner, went home, realized my wife didn't feed our 2 kids and it was already 8pm so I got back into the truck, went and got food, and drove it back home. Several engine cycles, and no issues with water in the engine. Based on post #1, either the water was 4 feet high, or something else happened to the engine. I wonder if we're looking at a broken valve spring that resulted in engine failure? What's the build date on the truck? Truck was built in March, so I don't think that's the issue. Does it rain hard enough to get 4 feet of water in a parking lot in Los Angeles? I doubt it. It's not Norfolk, VA. Sent from my SM-N960U using Tapatalk