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2024 3.0 Duramax

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  1. 2024 3.0 Duramax
    Thank you for the replies. All are note worthy.
  2. 2024 3.0 Duramax
    My 2024 Duramax 3.0L DEF dash fuel gauge seems stuck on full, with about 15k on truck still under warranty. I noticed it had not moved after about 2.5k miles since last refill, where it’s normally down 1/4 - 1/3. I try to refill when it’s down to a quarter full on the dash gauge with fresh DEF. It’s well above freezing, and using approved DEF, cap on tight. Any ideas? Thanks
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