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  1. General Tech
    Changed fuel pump and now getting code P216D and P2155. Was not getting those before the pump was changed. Help!
  2. Engine & Drivetrain
    Hi! I have a 2021 Acadia with 5k miles and have owned it for about 4 months. Last night, my CEL came on. It’s giving the code P023F, but drivability is the same (nothing noticeable). Anyone else having this problem? The code is related to the fuel pump, but surely that hasn’t already gone out?
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