Other Fuel System Tank Mounting problems of the 2015 Chevrolet Suburban

I felt a shutter time to time at start up, and would feel like the wheel would grip on hard turns backing up, was like this for a couple of days. Filled tank & drove out of town, at destination noticed leakage under car, under drive seat. Thought it might be condensation. Vehicle sat for 2 hrs. , no leakage visible at start up, after starting vehicle notice leakage began again and this time at a larger volume, could smell the fuel. Called dealership they picked it up on tow truck, when back end was lifted, a significant amount poured out from under car. Was told that the fuel hose/fuel pump has the cause due to rubbing. First 3 weeks was told part was on backorder, then that it was going to become a recall and that the part needed to be redesigned and that there was no immediate time frame for vehicle return. I have been driving a dealership loaner for 2 months now. Dealership asked if they can "craft" a patch to get my vehicle out of the shop. I denied this, considering I don't know what the legalities will be. Very disappointed in chevy, this is my 3rd Suburban/tahoe and I'm considering filing lemon law.