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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29427
Experience:  GM Grand Master Technician 2007. 14 years experience.
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My 2004 GMC ENVOY (6 cylinder) has set code P0410 secondary

Resolved Question:

My 2004 GMC ENVOY (6 cylinder) has set code P0410 secondary air injection. What causes this? Are there specific parts to replace to correct this. I recently replaced the primary O2
sensor.

Bob Peck
Submitted: 7 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 7 years ago.
Welcome. Do you hear the pump running at all under the truck when you first start the truck?
Customer: replied 7 years ago.
The compressor for the rear stabilization runs until that system is pressurized and I can hear a relay actuate. Other than that no specific sounds.

Bob
Expert:  GM Tech (Cam) replied 7 years ago.
Ok. I am not talking about the rear air suspension, I am talking about the air pump. Check the fuse for the air pump in position 56. It is a 60 amp fuse. Also take a line off the pump and see if there is water there. If so, replace the pump.
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