This entire fuel pump fiasco has me thinking of sacrificing my National Corvette Restorer's Society score and coming up with a way to make the fuel system serviceable without accidentally breaking things.
There's no real reason for the jet line and return to run inside the crossover.
But...
The real problem with this whole mess is the limited access to where the crossover enters the tanks.
Access that could be provided by cutting a slot into a frame gusset and box welding the slot.
Then you could lower the tank 6" and get at the collar from the wheel well instead of from underneath and between the back side of that gusset and the transmission.
But that would have added $20 to the cost of making the frame. GM hates spending money on things like making future repairs possible without replacing more than what's broken.
The tank pressure vent on the top should be a replaceable item on its own, not something that's molded into the tank. I loath inseparable assemblies and there's far too many of them in this thing's fuel system.
And it's ALL because of The California Air Resources Board. It's their standards on permeability that led to how this is all sealed up.
Ironically, this mania for sealing things lead to materials that grow brittle and begin leaking on their own. This releases more fuel vapor in a few days than the older "unsuitable" materials did over decades.
Gods be damned greenies!
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