Question about 2005 Chevrolet TrailBlazer LS
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Posted on Jan 02, 2017
The P0410 code refers to the emissions system. The AIR pump puts air to the
exhaust to lower emissions. It takes in outside air and pumps it through two
one-way check valves into each bank of the exhaust: P0410 - Secondary Air Injection System Malfunction.
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. In any cold climate, especially in climates with higher humidity, this water may be more excessive. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.
Causes: A code P0410 may mean that one or more of the following has happened:
Possible Solutions: There is a technical service bulletin (TSB) regarding this code for a number of GM models. The TSB calls for the replacement of the AIR pump and the installation of a new secondary injection hose. The TSB can be found on this ACDelco site.
Additionally, if you simply replace the AIR pump the problem may return again (and again). If you replace the pump, also clean out the hoses and replace the one-way check valve. If this is on a GM model that the TSB applies to, follow those instructions in the link above. In a few cases, people have put a small hole in the rubber cover on the pump which allows any water to drain out.
Also, please note that this may be covered under the emissions warranty on the vehicle. If your vehicle is out of bumper-to-bumper warranty, check if the emissions warranty is still valid!
Test it and tell us news.
Posted on Nov 04, 2010
Sorry but iam a bit thick this end ,now what are you playing with to stop this pump from working as you havent stated the full facts ,if its not running right with the air pump not working then leave the fuel cap loose a bit so air can enter the tank that will keep the vehicle running while you explain a bit more as to the problem
Posted on Nov 03, 2011
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