A bad EGR valve should not cause the engine to not start. There is most likely another problem that is causing the engine to not start.
There are several things that can cause your 2004 Chevy Trailblazer headlights to keep going out. The most common cause is a loose or corroded ground wire.
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.
Come to our Trailblazer enthusiasts forum and find your answer www.trailvoy.com
Could be, (assuming the starter is not cranking the engine) a bad starter, dirty or loose battery connections, the engine is seized.
engine oil leak
2002 chevy trailblazer cut off everytime i make a complete stop,what is the cause of the truck cutting off?
stabizer bar links that causing the rattling..
This is a electronic fuel enjected engine and therefore the electonics set the engine idle speed a bit higher during a cold start so the engine will not stall out.