Insert the into the ignition switch and turn it to start until the engine starts. Repeat this 3 times. If it does not start after 3 times you may have a bad chip in your key or a bad ignition switch and will have to take it to the dealer.
remove the intake on the top of the engine. they are under it. There will be 6. for a L6 engine and 8 for V8
Could be, (assuming the starter is not cranking the engine) a bad starter, dirty or loose battery connections, the engine is seized.
starter on a 2005 trailblazer v-6 is on the drivers side bottom end of motor you can see it from top side of the engine can only get to it from top side unless you remove skid plates underneath motor
seized engine? bad starter solenoid? bad starter? loose or corroded battery cable? bad neutral switch?
Seized engine? Loose or cooroded battery terminal Bad starter solenoid? Bad neutral or clutch safety switch?
can you cranck the engine by hand
How do I reset the service engine light on a 2003 Chevy Trailblazer?
Engine diagrams can be used as guides.. An engine diagram to a 2003 Chevy Trailblazer can be found in its maintenance and repair manuals.
What would cause the engine not to restart when hot Chevy Trailblazer 2007?
What do you mean when you say it doesn't engage? Is the starter spinning but just doesn't catch to spin the engine? IF that's the case it could be as simple as a loose starter or as bad as a damaged flex plate/flywheel. But it would most likely be the starter.
Specs for main bearings on a 2003 Chevy trailblazer with 4.2 engine .
if it wont crank the the starter is probally out but if it cranks and the motor doesnt turn either the belt is to loose or the engine is locked up