2003 Cadillac Seville SLS Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Cadillac Seville SLS
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2003 Cadillac Seville SLS ProblemsCheck Engine Light on Due to Failure of Secondary Air Injection Pump
Water may be drawn into the secondary air injection (AIR) pump causing the pump to fail and the Check Engine Light to illuminate. Our technicians tell us there is a kit available from General Motors to relocate the air intake for the pump which should prevent future damage from water intrusion.
A Loose or worn gas cap may cause Check Engine Light to illuminate.