Hey Guys, ive got a 2002 gmc sierra and im having several issues with the fuel pump. Ive got 133,000 mile on it and i just replaced the fuel pump probably 15,000 miles ago. Now im having issues when i go to start it after its been sitting, i have to cycle the key several times to get it to start up right away. other wise it will just crank. i was told by a mechanic it was my pressure line check valve is failing and releasing the fuel pressure from the lines when it sitts for more than a hour. so by cycleing the switch it pressurizes and starts right up. And on top of that my fuel guage now when im sitting still to long with the truck running will drop to below empty and my fuel light comes on. if i move the truck it goes off and guage goes back to normal... Has anyone had this happen to them and what did you do to fix. dont really want to drop another $350.00 for a new pump. Any advise would help. Thanks....
