Question about 2004 Chevrolet TrailBlazer
Check the air pump on your trailblazer, make sure its clean inside and the hoses are properly fastened. also check to make sure it works properly by listening for it when you start the vehicle. if the air pump is working correctly, replace the position 1 o2 sensor meaning the sensor on the exhaust manifold. the air pump is located under the vehicle, inside the frame rail on the drivers side in front of the transfer case crossmember with 2 hoses connected to it.
Posted on Feb 21, 2009
How to check and replace it.
Posted on Aug 02, 2010
To diag. the P0410 prolbem first start with the secondary air injection solenoid valve located on the passanger side of the block directly under the air filter intake. Disconnect the larger hose under the electrical plug. Start the engine if there is air flow the pump is fine and the prolbem is the secondary air injection solenoid valve. It can be found at the dealer for around 150 and also on ebay for around 75. Do keep in mind there is a gasket located behind the valve that may need to be replaced, this I could only find at the dealer for around 7 dollars. This is the most common prolbem.
Posted on Jan 18, 2013
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Posted on Jan 02, 2017
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