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#1 | |
AF Newbie
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05 GMC Envoy PO410 code.
Have replaced relay for air pump and air pump works now. Reset code and a day later code comes back on. I can hear the pump running if I shut the vehicle off right away. What else could it be?
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#2 | |
AF Enthusiast
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Re: 05 GMC Envoy PO410 code.
I would bet that the switching valve is stuck closed.
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#3 | |
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Re: 05 GMC Envoy PO410 code.
Agreed.
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#4 | |
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Re: 05 GMC Envoy PO410 code.
You can unplug it and hook a power wire to one terminal [of the switching valve and another jumper to ground on the other terminal. Make sure you are doing this on the switching valve! You should hear a click when you supply and remove power. With power supplied and the air supply hose from the pump disconnected from the valve you can start the vehicle. You should hear/feel exhaust gas coming out of the tube the air supply connects to. If you don't than replace the valve.
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#5 | |
AF Newbie
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Re: 05 GMC Envoy PO410 code.
Great thanks. Where is this switch valve located. Pass. side of the engine?
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#6 | |
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Re: 05 GMC Envoy PO410 code.
passenger side right above the exhaust manifold towards the rear. You'll see the big fresh air hose going to it.
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#7 | |
AF Newbie
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Re: 05 GMC Envoy PO410 code.
Found it. Thank you!
Would you happen to know the part number for this? |
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