So my 2009 Silvy 1500 LTZ is burning oil, seems like a quart every 5 hundred miles, maybe more, haven't got it down to a science yet, so I took it into the GM dealership yesterday, and they say they have to check level every 500 miles, for 6 TO 8 TIMES! which is roughly 4000 miles if it goes to the 8 times. the truck has about 57,000 on it right now. He asked me if I have all of my oil change records, I don't since I change my own oil, probably should keep receipts but hey...i didn't. so I guess the question is, if it is determined that there is a problem (which I'm sure they will) can they screw me out of the warranty covering it since I don't have records of oil changes? I paid for the extended 100k all around warranty when I got the truck so I wouldn't have to come out of the pocket on things like this, so I sure hope they'll cover it...