If a fuse is blown and you switch it out. you have to find out why it blew out to begin with !!!!.....

I'm hoping mine is as simple as a fuse. I am intermittently having service traction control, service stabilitrak light that comes on. The truck has a hard time (sometimes) starting, and the power will go into limp mode and if the car is in drive it will sometime jerk and stall. I replaced the battery, seemed to be good to go, then 6 days later it does the same thing. I keep hearing people talk about Crankshaft sensor etc, but its so sporadic that it doesn't make any sense. I'll let you know.