i know that a secondary air injection is what is known as an air pump and the pump new is 180 dollars at Advanced Auot Parts. But before you replace it try checking the fuse for the pump next to the battery and see if it is blown it is only about 3 dollars. It is in a black box on the left side of the battery right against the passenger side panel.
Secondary Air Injection System Incorrect Flow Detected
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Replace the check valve on the secondary air injection system on the passenger side
Replace airpump check valve on passenger side of secondary air system.
The secondary air system pump is on the driver side below the battery .
There are several ways to fix the secondary air injection system in a 2005 Chevrolet trailblazer. The most common fix is; changing the air filter.
Need to know what your question is.
the secondary air injection system on a 200 Chevy s10 is right by the radiator on the passenger side of the engine bay. if you look down there are 4 bolts bolting it to the frame of the vehicle.
the secondary air injection system is the smog pump and valve. the valve is located on the exhaust manifold with 2 hoses leading to the smog pump which is located under the drivers side floor. it is electric.
The vehicle will fail an emissions test.
secondary air injection system
Trouble code P0420 means: Secondary Air Injection System