I have a 2015 Chevy Malibu that has the battery saver active on. I checked the battery's and alternator they both are good. The scanner is telling me that the bcm is calling for a reduced charge. When I located the sensors yes 2 .it only calls for terminal type but there is a clamp one also that only shows 2007 thru 3013 was this added by gm or aftermarket?