bought the truck a few years back- in jersey - some kind of storm is headed my way. i have never owned a 4x4 till the tahoe- talk is possible a foot of snow. not sure if i will need. but would be nice to have 4x4 in a 4x4 truck. so since i had no clue how to get it to engage. its the 3 button on the dash model. anyway- tried neutral- nothing. tried park- nothing, i see nothing on dash- hear nothing happening. a whole lot of nothing. dont need to go off roading. dont have monster truck tires to go off road or blow through snow. just a daily driver. never tried it. figured id try before the snow in case my kid needs the truck to get to work. NOTHING 2 and 24 fuses are good. not sure if that matters. no lights, changing on the switch. nothing on cluster at all showing 4x4. any help would be GREATLY appreciated.