Reset service light indicator, engine oil life Cadillac CTS, year 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 reset instructions: 2003-2006 With Base Audio System Turn the ignition to run (one position before starting engine). Press the up or down arrow on the INFO button located to the right of the Driver Information Centre (DIC) […]