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  1. ⚠ Bad Gas, or Blown Head Gasket? ⚠

    Problems, Driver Warnings or DTCs - Chevy Volt
    Hello all, Just recently bought a 2012 Volt (this past February) after reading tons of threads on this awesome site. I really like the car! Brief Rundown: 170K on mostly the engine (30 lifetime MPG) 3 DTC Codes: P0131, P0137, and P0420 Changed Oil, Spark Plugs, and Air Filter No mods except...
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