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.
Check Engine Light on Due to Failure of Secondary Air Injection Pump on Cadillac DeVille DTS
Average mileage: 134,777 (85,325–200,000)
11 people reported this problem
2003 Cadillac DeVille DTS 85,325 mi, Visitor
GM DEALER REPLACED THE SECONDARY PUMP..... GM WARRANTY......12 MONTHS THIS NEW GM PUMP DIED IN 14 MONTHS............ HAD VALUE GUARD GM PROTECTION PLAN WHICH DOES NOT PAY FOR THIS PUMP ..........I HAD DRIVEN THIS 2003 CADILLAC DEVILLE FOR ELEVEN YEARS AND DID NOT HAVE A PROBLEM....IMAGINE THE NEW GM SECONDARY PUMP DROPPED DEAD IN 14 MONTHS......IF YOU CALL GM YOU ARE WASTING YOUR TIME AS AT GM HEADQUARTERS..NOBODY REALLY CARES ......
mil light on with the po410 code will have to replace the air pump with upgraded part
2003 Cadillac DeVille DTS 88,806 mi, Visitor
getting a new pump