4wd

So about a year ago I started noticing a couple of problems coinciding with my 07 SXT. I noticed that for at least 3 cranks in a row my 4WD light will come on during crank and stay on for a solid 10 seconds or so. It will then turn off and things appear normal. After those 3 trips I'll get...

So I did some front end work recently and broke the wheel speed sensor. The ABS and ESP BAS lights are on. I haven't gotten around to fixing it yet. Now it just snowed 6 inches and my 4wd won't engage. Does the computer need all wheel speed sensors to engage? This seems strange they would...