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However, unless your 11 Equinox has a great deal of mileage, I doubt either of these explantions The code can be cleared for free by a local auto parts store, or you can purchase or borrow a scan tool very inexpensively that will allow you to clear this code Vehicles affected 0711 Chevrolet Avalanche, Express, Silverado 1500, Suburban, Tahoe 0711 GMC Read More P0300 random misfires Diagnose P0300 random misfires If you own a GM vehicle and encounter a check engine light and P0300 random misfires code, read this service bulletin #PIP5264 before replacing any partsIntake gaskets are a common cause of multicylinder misfiring If no leak is found, the next step is to replace the spark plugs If the problem persists, more tests need to be done to diagnose the 06 Chevy Equinox Daytime Running Lights Will Not Shut Off Dealer Says The Switch Checks Out So What Else Could It Be 2011 chevy equinox code p0300