One problem related to oil pump has been reported for the 2012 Chevrolet Suburban. The most recently reported issues are listed below.
My 2012 Suburban has 90,000 miles. I had the lifters and oil pump go bad in October. Two weeks later I am back in the shop because the wheel bearing has gone bad. This is not covered under warranty. Also my dash is cracking. I had a 1999 Suburban and never had these problems.