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02 Gmc Sierra 1500 4x4 P0332 Code Issue


trahin77

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My truck is throwing a P0332 code. I had this show up about a month ago and I replaced both knock sensors and the rear knock sensor was corroded. The code was cleared and now showed up again. The truck has 180K on it. The engine runs without any problems. I was wondering if anyone has had the same problem or have any other suggestions? Could it be the fuel pump going bad? The engine is a 5.3 L with a CAI. I have serviced the truck at regular intervals.

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