My 2008 1500 Silverado 5.3 just quit running and lost all power wont start now

Yes, we tried that and could hear a click from up front and the person near the gas tank did not hear anything from the fuel pump area. Also when in the start mode GM's starters stay engaged for at least 4 full seconds or till the engine starts which ever is shorter. Just had the vehicle towed to my Chev dealer and they there is power to the pump and must be a faulty new pump, and needs a new gas line because it's kinked and isn't getting the gas up front..?? Broadway Chevrolet dealership wants to charge me $1800.00 to fix. My buddy and I went to the dealership and talked to the mechanic who swears there was power at the fuel pump all the while and showed us the braided elbow bend (covered) up front near left wheelwell. I wasn't convinced but have to make up my mind on the repair job asap. I think I'm screwed