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Type: Posts; User: fargo_182

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  1. That looks pretty sweet.

    That looks pretty sweet.
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    The code is P0420 Does piston slap sound...

    The code is P0420

    Does piston slap sound anything even like what I'm hearing?

    It almost sounds like it is in the exhaust near the headers. You know where two cats are. it sounds like a baffle...
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    It's coming from deeper in the engine. It still...

    It's coming from deeper in the engine. It still runs fine though? I'm assuming it's just a matter of time before it blows now....

    I gotta go get a code reader today to check it.
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    Engine Knock - Not Piston Slap

    Hey everyone.

    I have a 2003 silverado 4.8l 2WD
    Has 300,000km - so about 180,000miles

    Just recently started it up and it has this noise, like rocks bouncing around in a tin can.
    First I...
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