2003 Tahoe with 5.3 Liter Flex fuel :
Fuel line rusted and dripping just like the OEM brake lines rusted and burst years ago.
I ordered stainless steel replacement set ($200 ) which includes:
3/8 inch supply, in two sections but no fuel filter included
5/16 inch return , in two...
The wiring loom / harness that feeds into the 4WD Encoder Motor 7 pin wiring connector was friction burned/frayed due to the fact that it was riding on the drive shaft.
I cut the black plastic connector away from its loom so as to leave behind 7 cleanly severed ( but way too short ) wires...