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.
With a scan tool.
No
I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?
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.
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.
In US it says "SERVICE ENGINE SOON" in Canada it looks like an engine.
It is the port, where a diagnostic machine can be hooked up. The diagnostic will read codes from your vehicles computer. For instance if your check engine light comes on, you can plug the diagnostic machine into the data port and it will tell you why the check engine light came on so that you can get it fixed.
how to reset check engine light on 1992 Mazda mpv
When the light comes on it's telling you to read the engine diagnostic codes.
How do I reset the service engine light on a 2003 Chevy Trailblazer?
Light can only be reset by the use of diagnostic equipment.