[LS1_C10]

I hope.
Backed out of the driveway, made it three houses, the truck dies. Get it started again, idles fine, throw it in drive, hit the gas. It takes a minimum of 3/4 throttle to idle down the road. When you let off the gas, it dies. Also, the lights are flickering, and they have never done that before.
I drove it all day yesterday with zero problems.
Oh and its 72 degrees outside.
Oil pressure and truck temp show fine.
Has gas in it (we idled to the corner gas station...about 500 feet).
Took FOREVER to start, like 30 seconds of cranking. Never done that before either.
Help me out guys!