Your current vehicle must be a Tacoma, their the only manufacturer to offer a factory electronic diff lock at this time. Consider the GM locker to be something like an automatic, it locks independently of whether the trucks in 4wd or 2wd and with no interaction of the driver other than hitting the skinny pedal. I have a Tacoma also and I can tell you action and reaction of the lockers on these two vehicles are nothing a like. I wish my Chevy had an electronic locker like the Tacoma's. I've seen a few people rewire the Fog lights to work in tandem with the high beams, and I've also heard dealerships voiding warranty on electronics when this is done. The lighting system interacts with the body module computer, which is why dealerships void the warranty. Thats a nicely loaded truck, very similar to my 2011, I'm very satisfied with my 2011 as a commute and tow rig, gets the job done with no fuss and returns decent fuel mileage most times, I have had a few trips where the mileage dropped less than I felt it should but on the upside every trip is done in comfort with a minimum of driver fatigue.