I have 30,000 miles on my 2020 gas 2500. Occasionally (which seems to be more often lately) after I back out of the garage, stop and shift into drive, there is a hesitation before the transmission engages. When this occurs the engine will rev up to 1500 RPM’s between gears. The hesitation lasts probably 2-3 seconds. I took it to my local Chevrolet dealer this week to diagnose. From the time they drove it into the shop to the time they informed me they were done, including test drive was exactly thirty minutes. The service manager said all pressures checked out and no problem was detected during the test drive. I said nothing rather than something I might later regret. Is this the kind of service you get with a vehicle under warranty these days? Anybody else having this kind of issue with their transmission?