Most Popular Built-In DVR for 2019 GMC Sierra 2500

The RVS-4CAM works very well and was easy to install both the camera and monitor. The only negative thing I noticed was that because the system is wireless there is sometimes signal loss at highway speeds which can be somewhat annoying. The product quality was outstanding compared to a cheaper no name brand that I had tried earlier for a different vendor. I highly recommend both the camera system and etrailer.