Question about 2004 Chevrolet TrailBlazer

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We have changed the spark plugs,alternator and battery on our 2004 Chevy Trailblazer the gauges fluttered at first attempt at starting now it won't do any thing. What do I do???????????

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Bruce Hathcock

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Check the starter relay and the main cable connected to the starter, also turn the head lights on and try cranking the engine over while watching the head lights, do they go out? if yes the wire on the starter is loose, if the engine does not crank and the lights stay on then it's the starter relay or the main starter wire, if the cable is tight then it may be the safety neutral switch which is on the side of the transmisson, let me know if you need more help.

Posted on Aug 18, 2010

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Something in your computer controlled ignition system is shutting down. You need to check for trouble codes. Check for spark on a spark plug wire right after it stalls, or does it start right back up?

Dec 07, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

We took off the breather cover on a 2004 chevy trailblazer and there was water in it


Sounds like you may have a bad valve cover gasket. same thing was happening on my wife's Chevy Aveo. Valve cover gasket was worn and when I replaced it and cleaned plug wells, issue was resolved.As for the breather, I really wouldn't know why there's water in there.Only thing I would suggest there is to check your antifreeze level. Is it water from the antifreeze?

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/cesar_16d20d38798d492f

Mar 24, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

2004 trailblazer doesn't start on first try. It cranks and eventually starts but usually 3-6 tries. Once started it runs fine. I have no check engine light. We have replaced the spark plugs, b


For engine to run it has to have:
Fuel, air and spark.
So if it doesn't start, something's missing.
Is your fuel pressure OK? Is your spark present? Is ECM firing injectors?
Check all those basics and I'm sure you'll find what's wrong.

Jan 10, 2018 | 2004 Chevrolet TrailBlazer

1 Answer

2004 Chevy Trailblazer idles rough. Idles ok when started up, but after warmed up it idles really rough when stopped.


If it has not pulled any codes (idiot light). Clean your throttle body, and change your spark plugs with A/C Delcos #41-103, most other brands will cause rough idle like Autolites and Bosch. This would be a cheap way to fix this problem.

If by chance you have just recently changed the battery or had the battery unhooked. Let me know, it's an easier fix that costs virtually nothing.

Nov 18, 2010 | 2004 Chevrolet TrailBlazer

2 Answers

I HAVE A 2003 TRAILBLAZER IM HAVING TROUBLE WITH THE CHARGING SYSTEM,I CHANGE THE ALTERNATOR BUT IT STILL SHOW THE BATTERY GAUGE LOW CHARGE NEED HELP ON WHAT TO DO


You need to check the voltage at the battery itself, if the battery voltage is indicating in the area of 12.5 - 14.0 volts and your dash gauge does not agree, then the dash cluster has a bad stepper motor which drives the gauge.
If the battery voltage agrees with the dash gauge, and the alternator was changed and is assumed good, you need to check the wires going to the alternator, there may a broken connection.

Sep 21, 2010 | 2004 Chevrolet TrailBlazer

2 Answers

Changing spark plugs in 2003 chevy trailblazer


CHANGING SPARK PLUGS IN TRAIL BLAZER. YOU NEED TO REMOVE AIR INTAKE RESONATOR AND IGNITION COILS.YOU NEED LONG 3/8 EXTENSION - SPARK PLUG SOCKET - 3/8 RATCHET WRENCH. NEED SPARK PLUG GAUGE AND A TORQUE WRENCH.YOU CAN GET BY WITH OUT ONE LONG AS YOU DONT OVER TIGHTEN PLUGS AND STRIP OUT ALUMINUM THREADS.

Jun 26, 2010 | 2003 Chevrolet TrailBlazer

2 Answers

Starter on 2004 chevy trailblazer


If you can't get the key out of the ignition, it's probably the ignition switch (where the key goes in) that is bad, not the starter. The starter is on the right side under the exhaust manifold behind the right front wheel. It's not easy to change on those unless you know what you're doing.

May 30, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

MY CAR WONT START I CHANGED THE STARTER AND IT STILL WONT START IT IS A 2004 CHEVY TRAILBLAZER


Not to worry this happens to everyone.

Many people seem to over look and understand that the battery is the mastmind behind this no start condition.

I would suggest that if you hear a clicking noise while cranking ( attempting to start) the engine; that you have a certifided tech inspect the charge of the battery.
This could also be , if it becomes something major, a no fuel condition. Meaning; your engine is not recieving fuel to combust.
Or a no spark condition which means that your spark plugs are not igniting your fuel.

But not to worry the problem could be your battery.

Jul 13, 2009 | 2004 Chevrolet TrailBlazer

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