so i have a 01 silverado 1500 with the 5.3, she has around 327000 miles on her so shes worn but runs great. Until today when she decided to stop idling. when i start the truck up it will die in 5-10 seconds unless i give it gas and keep it just above the 1000 rpm range, she sounds no different then before theres no stuttering or roughness and i had just gotten back from walmart. Changed out the Mass Airflow Sensor, the Throttle Positioning Sensor and the fuel pump relay and no change. however when i unplugged the battery for 20-30 seconds is started up and idles fine for about 5 mins then dies again.... any suggestions? this is my daily driver so anything yall can think of would be of much help!
to wrap it up:
new MAF
new TPS
new fuel up relay
wont idle at all

 

have you gotten fuel lately?