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Had the same problem on my 2000 GMC Sonoma. After getting it replaced for the third time (all three under warranty) the mechanic recommended not allowing the fuel gauge to read less than a quarter tank remaining. He said the fuel acts as a coolant for the fuel pump (go figure, using a volatile liquid as a coolant). In the nine plus years of following his advice, I haven't replaced the fuel pump.

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Q: Why do GMC truck fuel pumps fail so often?
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