CADILLAC CTS 2008 Base Models; GM Brake Code J55 w/ Heavy Duty Brakes ;. CADILLAC CTS 2009 Base Models; GM Brake Code J55 w/ Heavy Duty Brakes ;. CADILLAC CTS 2010 - 2011 Base, Luxury, Performance, Premium Model ; GM Brake Code J55 w/ Heavy Duty Brakes ;.