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.
secondary air injection system
The vehicle will fail an emissions test.
Ignition lock out
Secondary Air Injection System Incorrect Flow.
Under the radiator, passenger side.
p0412 on a 2000 Malibu is secondary air injection system valve A malfunction-
Trouble code P0420 means: Secondary Air Injection System