My oil change guy mentioned I was burning about a quart every 3000 miles - he said it was a common problem with these engines. Unfortunately, I was about a month over the 5 year warranty limit (purchased 4/2010, aware 5/2015), though under on miles.

Never had it repaired - hoping for a recall. Now, my catalytic converter is TOAST - gotta believe it's related.

My dad retired from GM and we always bought GM, but this vehicle has had the trans rebuilt, a throttle linkage issue repaired - a silent recall, and the oil burn issue. I love my truck, but might buy a Ford next time.

Took Car to dealership. Appeared that there was a known problem but they were able to cover under warranty. They did a temporary fix of replacing the 2 burned out spark plugs and replacing left valve cover. It appears that in trucks that are 2010 this is a known problem and requires a more aggressive fix rather than driving the truck for 500 to 1000 miles to check consumption of oil. Oil is still leaking on the driveway after 1 day of being "fixed" . More significant damage to the engine has probably been done

I bought my 2010 GMC Sierra 5.3L truck new from the dealer. About two years ago, I noticed it was beginning to use oil, and every once in a while it would emit a cloud of blue smoke when started. I didn't consider it big problem since the truck ran fine and all I had to do was top off the oil between changes, which is roughly every 5,000 miles.

Recently the oil pressure gauge registered no pressure and the dashboard started dinging non stop. The truck had oil in it but the gauge still registered low pressure or none at all. I ended up towing my truck to the dealer.

The dealer told me my 2010 GMC truck with 82,660 miles on it has an internal oil leak, likely stuck rings, which is causing the oil consumption. The leaking oil enters the combustion chamber and is not being completely burned. The emission design for the engine recycles unburned gases back into the combustion chamber for another go at it. This iterative process created a carbon build up in the engine that caused the oil pressure sensor to fail, hence the non stop dinging in the dashboard.

The repair, which cost $600, flushes the engine to remove as much of the carbon gunk as possible, replaces the oil pressure sensor, and recommends oil changes every 3,000 miles with a synthetic oil blend. This doesn't give me much confidence the problem won't reoccur, or worse yet it escalates to be a more serious problem than a failed sensor. The root cause of the oil leak is not being addressed. Engine work of this nature will cost at least $4,000, likely more. According to the dealer, none of which GM will help defray.

I believe GM knows they have a design problem with that engine and they are asking their loyal customers to bear the costs. I believe GM should take responsibility for their problem. A new truck which is properly maintained should not have engine problems after 82,660 miles. I have been a loyal GM customer my whole life. I probably won't go back.