2005 chevy trailbazer
The diagnostic code 410, on your 2004 Chevrolet trailblazer, is a reference to a vacuum hose problem. Check the vacuum hoses to make sure they are all connected.
You must first get the code read and find out what made it come on. Then the code can be errased at the same time with the code reader. If the code was an anomalie then the light will go out after 3 or 4 drive cycles.
The second spark plug is misfiring. Could be the coil right above the spark plug.
You will get error code P0016. And you will hear engine knock.
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Trouble code P0128 means: ECT Sensor Below Thermostat Regulating Temperature
The paint code for a 2004 Chevy Trailblazer can be found on the vehicle's Service Parts Identification label, which is typically located in the glove compartment or on the driver's side door jamb. Look for a three-character code labeled "BC/CC" or "Paint Code." This code corresponds to the specific paint color used on the vehicle. If needed, you can also check the owner's manual for additional information on locating the paint code.
Secondary air injection malfunction. Maybe the air pump failure or a leak?
Look under the driver side dash, near the front. You will see the plug there.
It is an error code relating to the ABS system. I believe it is a right front speed sensor issue.
Had a similar problem with a 2000 S10, went to dealer and they unlocked the radio.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.