This video one of many flash patterns you can select to flash all your factory lights  on this 2019 Chevrolet Silverado. Requires only 30 minutes of installation.  
Flasher kits available for Chevrolet Tahoes. 
Super Flash Systems
2019 Chevrolet Silverado
Flasher kits for Ford and Dodge cars and trucks available. 
Call for information for flasher kits that are available for many year,makes, and models.
These two videos shows a installed Plug N Play programmed flasher .  Flashes headlights and turn signals .
 Flashes tail lights , reverse lights, and third brake light and more.  
Flasher can be hard wired in the controller.
 Or flasher can be ordered with its own control switch.

Ph. 817 847-0007  817-306-4499