Recent content by Ozzycon

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    2022 Refresh AT4 1500 Duramax 3.0 Diesel Check Engine Light and Exhaust Leak

    I've had it now for a little over a week. They did have to tear the exhaust out from the header back. Hopefully that fixed the problem. We shall see.
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    2022 Refresh AT4 1500 Duramax 3.0 Diesel Check Engine Light and Exhaust Leak

    Full emission system is being ripped out and replaced. Three others at the dealership with the same problem.
  3. O

    2022 Refresh AT4 1500 Duramax 3.0 Diesel Check Engine Light and Exhaust Leak

    2022 Sierra 1500 Refresh 3.0 Duramax Elevation made in MX. So I bought the truck in July. Drove it for a week and the check engine light came on with the emission fault text. Made a service appointment and was about to bring it in and the light went out. Thought it was a fluke, so I...
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