Silverado Back Up Camera Delay

Last week I purchased a 2014 Silverado 2500. The truck has navigation with the back up camera. The camera is slow to engage. I have to make a u-turn in reverse in my driveway to park. The camera won't turn on until I am nearly parked. After backing up and dropping it in drive I can go about half a block before the camera turns off. Is this normal?

I haven't done any scientific calculations on timing yet. DW's Jeep has a back up camera and engages almost instantly. Hopefully it is something that can be adjusted.