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engine power reduced
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  1. Terrain General Discussion
    Just bought a 2020 GMC Terrain SLE 1.5 4 cyl. only 340 miles. Just had the Engine light come on with Reduced Engine Power displayed on the dash. On Star tells me there are three codes. P0089 P00C6 P228C Its now setting in the dealers lot waiting for Monday Morning. Anyne experience this with...
  2. Engine & Drivetrain
    I'm hoping someone can help narrow down the large list of possibilities that could be causing these codes to be permanently displayed... I have to do the work myself if in any way possible as I can't afford any sort of mechanic at this point... More info: it all started with what seemed like...
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