4.3 V6 2003 GMC Sonoma

Truck was running fine the low fuel light was on
and out the blue it acted like it was runing out of
gas put Gas in it and now it well idle but as soon
as you open the throttle it cuts out. You can't hit
the gas pedal real short and get it to rev up but
hold the pedal in one spot and it like it's flooding
out. Open the Gas pedal all the way open and it
popes throw the intake and it well not rev up just
like it's flooding out but still running some what  
let off the Gas and back to idle but it ildes rough