mikemac4498

I'm on my 2nd go-around with the oil consumption test. In the first 1000 miles I used 3/4 of a quart which dealer claims is within GM specifications but I am going back in another 1000 miles to have it rechecked. In looking at the TSB, it mentions that depending on when your vehicle was manufactured is what fixes will be on it. How can I find what month in 2011 my Silverado was made? On a side note, since I'm not sure if issue is related yet, I noticed that I had a rough idle yesterday then the check engine light came on. I had OnStar check and I have a misfire condition. Not sure if the oil issue is causing an issue with the plugs or something entirely different. While bringing the truck to the dealership this morning I had traction control/stabilitrack errors that kept cycling through the DIC. With only 18k on the truck, I'm wondering what can go wrong next. Beginning to wish I had kept my '06 Sierra that had no issues.

2011 5.3 LT Crew Cab 4x4 with only 9100 miles on it, have owned it less than a year. Engine light came on yesterday and contacted OnStar and they said it was something to do with an oil sensor and recommended checking my oil level but that everything looked fine and light should be off by the next day. Checked my oil and it was over 3 quarts low. My oil life indicator was showing that I was still at about 35% oil life. Brought it to the dealer today and they are replacing the valve cover with an updated one, not sure what the update is. They recommend an oil change based on my last one was about 5,000 miles ago so I'm bringing it back on Tuesday to have the valve cover replaced followed by an oil change and then they want me to start the consumption testing. I'm kicking myself for trading in my 2006 Sierra with a 5.3 and around 53k miles on it, never burned a drop of oil and never had any major problems. Oh, and non-oil related I had it in the shop a few weeks back. I found that two bolts on the back door hinge were loose, one was about 1/2" out. I tightened it but made them go through every bolt to make sure that they were torqued down. I've never had the door off and the truck was new when I bought it. No clue as to how it got loose as I thought that they were built primarily by robots. I'm dreading what breaks next.