where is the air pump located on the 2008 cadillac dts

Question

check engine light stays on

Answer 1

P0411 Secondary air injection incorrect airflow detected

​ The location of the secondary air injection pump , you would have to remove the front air deflector to access the secondary air injection pump.  If there is no fault found with the secondary air injection system , there is a TSB that was produced by Cadillac TSB 08-06-04-053. What happen is P0411 is set and there is no fault found with the secondary air injection system , the fix is to reprogram the ECM