2015 Chevy Tahoe with 85,000 miles - mostly highway. Check engine light came on - took it to a GM dealer service center. Cylinder 6 had a bent rod and damaged the valve. Waited over a week for a valve lifter oil manifold which GM has redesigned to fix this design issue. GM refuses to cover this design flaw and $2,700 later I have my Tahoe. This is the latest example of GM not covering their design flaws. I have bought GM Trucks for the last 40 plus years, but I am trading this Tahoe in and will never buy another GM Truck. I a User's recommendation: Do not buy GM - they will not stand behind their product.