P2635 Code

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I really wish someone has found the solution to this problem.  Seems to be common.  Here are my specifics.

> 2018 Yukon Denali

> 6.2L

> 88k miles

> Purchased 2 months ago from a dealer.  Pretty sure previous owner knew of the issue and traded it in.  Dealer has no warranty and is 2 hours away.

> Only throws the code when low on fuel.  1/8 of a tank was the last time.  It will sputter on acceleration from a stop or turn

> After sitting for a few hours it doesn't start up like it should and has a longer turning over of the engine.

> I'm leaning toward swapping out the fuel pump, but don't want to just throw parts at it.

 

Much appreciated to whomever can solve this issue!!  I'll try to remember to come back on here for an update if I end up doing that.