There are many reasons why a check engine light could come on and shut a Trailblazer off. It could be the fuel pump or the oil pump. A mechanic will be able to run diagnostic tests to figure out the problem.
No
I think you are talking about the secondary air check valve. Come to our enthusiasts forum and post your question there with the trouble code (Pxxxx) www.trailvoy.com All the Answers for your Trailblazer
absolutely nothing it seems, the light can be a finicky thing, check your ias (the wire connected to your air hose) that's a usual suspect
You probably have wires that are burning. You should have the vehicle repaired by a professional before you have a breakdown or a fire.
Probably a faulty ignition switch. learn more at www.trailvoy.com Trailblazer enthusiasts website.
Turn the light nob to the left and a orange light should come on under the lights nob.
do a 2005 trailblazer come with a carentry control
Have you tried pushing the button to the left of the steering wheel? the one that shuts the lights off when they are on. if that doesnt work, if you have an aftermarket radio, and the adapter for the security, that might be why.
No the check engine light will not come on
No, the check engine light does not come on because your gas is half way full. The check engine light will come on if there is a problem with the engine.
If it has a downstream O2 sensor the check engine light will come on but if it does not the light may not come out. In most instances it will set the check engine light.
If an check engine light does not come on it is a good thing. When your check engine light comes on, it means you need service done on your vehicle.