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So I had the local dealer do my 2nd free service in middle December. Since I usually do my own service, I ALWAYS check over work when someone else does it. So when the truck got home and sat overnight, I checked the oil level. It was perfect and to the top of the hatched area on the dipstick. No overfill. A couple of other checks over the past month and the oil level was perfect. Flash forward to Monday this week. I decided to check the oil level as the truck had been sitting overnight and was in the garage. When I pulled the dipstick the oil read almost 1/2 inch over the full mark. Made no sense as it had been fine after the oil change and in the couple of other checks since. Long story short I took 2 or 3 readings and it was the same every time. Finally got a good whiff of the oil and smelled strongly of gasoline. I pulled the oil fill cap off the valve cover and it wouldn't have smelled no stronger of gas if it had been a gas cap. Had the truck in to the local dealer and they contacted GM Techline. According to them my truck is the fifth reported truck with the same problem this week. In the grand scheme of things 5 trucks out of the multiplied thousands on the road is statistically nothing, BUT it doesn't hurt to check your oil level. I'm very thankful my dad instilled in me the notion to keep an eye on things automotive. Oil, coolant, tire pressure etc. GM believes the culprit is the high pressure fuel pump leaking into the crankcase. The part is on order and we'll soon see if they are correct. As for my truck I believe I caught it soon enough that there was no damage. Glad i checked the oil level when I did. Gasoline washing down the cylinders and bearings can't be a good thing and long term it definitely would not have been. Glad i took the time to pull the dipstick. Long story short, keep an eye on your oil level and take a sniff every now an then. i'll update when I get the truck back.