Mechanics

CODE PO410

2004 GMC Envoy • 6 cylinder 4WD Automatic • 54,000 miles

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?
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Jerry Stoltz
February 11, 2011.



SECONDARY AIR INJECTION (AIR) PUMP REPLACEMENT

REMOVAL PROCEDURE

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.


Rasmataz
Feb 11, 2011.
Under vehicle on frame see diagram
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Docfixit
Feb 11, 2011.

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