As some of you know I just bought a 97 silverado z71. The 4 wheel drive is electronic push button but it won't engage. I thought it was the actuator so I replaced it, but I was wrong. When I push the button for 4hi it just blinks. When I put the truck in neutral and press 4lo I can here a noise as if it engages but it doesn't and the light blinks. I've tried idling the truck forward and back but it doesn't engage. I did a search online and it said to check the voltage going to the actuator. I did and it has none. I checked the fuses all good. Another search said I need a new transfer case switch. I went to auto parts warehouse dot com (no spaces) to price one but couldn't find it. I did find a transfer case motor though. WTF is that, is it the same as a transfer case switch? I had bought a repair manual but it only had the floor "stick" to engage the 4x4 not the electronic system so I returned it.