I had a code PO410. Where is the location of the secondary air injection pump on my 2004 GMC Envoy with the 4.2L inline 6?
Friday, February 11th, 2011 AT 10:11 PM
SECONDARY AIR INJECTION (AIR) PUMP REPLACEMENT
Raise the vehicle. Refer to Vehicle Lifting.
Disconnect both the air inlet and air outlet pipes from the secondary air injection (AIR) reaction pump.
Remove the electrical relay from the AIR pump bracket.
Disconnect the electrical connector from the AIR pump.
Remove the 3 bolts securing the AIR pump bracket to the vehicle frame.
Remove the AIR pump from the vehicle.