Mine goes away when the engine warms up. But comes back randomly. Could it be a faulty temp sensor?Welcome to our forum. All C7s have a temporary reduced rpm halo that shows when the engine fluids are cold and gradually moves to the normal red line as the engine warms.
Sorry, but your engine in that picture is definitely not warmed up. Your oil temp gauge in the picture is barely off the 100 degree F mark. It takes on average 15 to 20 minutes of driving before the fluids in the engine and trans are 'warmed' up.This was taken after the car was warmed up. Then it reappears at the 5500 rpm spot. Then it goes away and comes back.