The cost of a secondary air injection system can vary widely depending on the make and model of the vehicle, as well as whether you are purchasing OEM or aftermarket parts. On average, the parts alone can range from $100 to $500, while labor costs can add an additional $100 to $300 for installation. Overall, you might expect to spend anywhere from $200 to $800 for the complete service. Always consult a mechanic for an accurate estimate based on your specific vehicle.
It does not have secondary air injection.
While the question doesn't make much sense, the secondary air injection system on a cobalt is fairly simple. If you could give an exact code the answer would be much easier to figure out.
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.
Some GM cars have this code but no secondary air, has it been worked on?
The secondary air system pump is on the driver side below the battery .
Without knowing what is wrong with the system there is no way to determine the cost.
it has to do with secondary air injection
Need to know what your question is.
On the exhaust manifold the small stainless steel tube is attached to secondary air injection valve. This tube can become restricted and clogged with carbon causing a CEL code. It needs to be cleaned out.
right under the alternator below the air filter
On a 2004 Cadillac DeVille, the secondary air injection pump sensor is typically located near the secondary air injection pump itself, which is usually situated on the driver's side of the engine, near the front. The sensor monitors the operation of the air injection system and is connected to the vehicle's engine control module (ECM). To access it, you may need to remove some components for better visibility. Always refer to a service manual for specific details and guidance.
Secondary air injection pump is located right on top/front of your engine. Its a black pump which should have a aluminum bracket holding it on. Just one inverted torx bolt and the electrical connection