Question about 2003 Chevrolet TrailBlazer

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Air filter 2003 trailblazer where is the air filter?

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  • jgunter2u Feb 15, 2009

    where is it at



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On the right front there is a big black box with four phillips screws take this off and you will see filter underneath

Posted on Sep 19, 2008

  • chevyLC Feb 15, 2012

    How do u clean the air filter



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Posted on Jan 02, 2017

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SOURCE: do you have a visual

on the right front there is a big black box with four phillips screws take this off and you will see filter underneath, simply pull the old one out, inspect and clean or install a new one.

Posted on Aug 06, 2011

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Why is 2003 trailblazer still not starting?


Jan 14, 2015 | 2003 Chevrolet TrailBlazer

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My 2003 chevy trailblazer idles rough and is missing while driving. what could be the problem?

check fuel pressure regulator for fuel in vacuum line ,check fuel filter , and alot of those models needed a top engine clean where u drip top engine cleaner through the air tube to clean valves .
we have done this action quite a few times with good results where i work
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Feb 02, 2013 | 2003 Chevrolet TrailBlazer

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2003 Chevy Trailerblazer getting low gas mileage

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Jan 02, 2013 | 2003 Chevrolet Chevrolet TrailBlazer

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Replacing 2003 chevy trailblazer fuel filter. outlets are on the same side with one saying out that was going to the tank. is this correct?

Out should go to the motor. Fuel is going in the filter from the tank and out the filter to the motor.

Sep 01, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

Do you have a visual on how to replace the air filter in a 2003 chevrolet trailblazer air filter

on the right front there is a big black box with four phillips screws take this off and you will see filter underneath, simply pull the old one out, inspect and clean or install a new one.

Aug 06, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

My 2003 TrailBlazer has a foul smell from the air system. What could be causing this smell? It's a sour smell not a dead animal smell. Is there a cabin air filter? I've read several posts and some say...

you can buy a deoderiser that kills all known airborn nasties,you spray it into the air inlet of any aircon unit,the only smell that it will NOT get rid of is cigarette smoke.that sticks to the filter/condenser and all the vents...nasty.

Aug 25, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

Where is the engine coolant temperature sensor located 2003 chevy trailblazer

ON the passenger side of the engine, in the head above the exhaust manifold in the very back of the engine. Hard to see and hard to get to. Pull the air filter top cover and the pipe that goes to the big box on top of the engine, then pull the big box off of the engine then you'll be able to see it alittle.

Oct 20, 2009 | 2003 Chevrolet TrailBlazer

1 Answer

Chevy Trailblazer 2003 ran the battery down now wont idle

try changing the air filter ,i had a problem ,at ilde in drive my trailblazer would stall, changed the air filter now it's not stalling and got my power back ,there is a secondary air pump that i have to change ,
not sure were it is ? still not running perfect but it's running better .and my service light is on too.
i got it put on scope ,it's the pump .
not sure if this helps ,but i'm start to run in to problems too,i have a 2004 trailblazer.
i like to do fix things myself ,i hope i's the cost if you know what i mean.

Dec 17, 2008 | 2004 Chevrolet TrailBlazer

3 Answers

Replace headlight for 2005 Chev Trailblazer

Thank you for sharing the information on the light bulb. You just saved me money from having to take my 2003 Trailblazer in to have the low beam bulb replaced. I did exactly what you said.
1 Open hood and lock.
2. Take filter cover off (4 screws and they stay with the filter).
3. 3 inch cover pulls off.
4. Twist light bulb 1/8 turn.
5. Unclip the wiring harness to light bulb assembly.
6. Test by turning light switch on.
7. Align assembly with light housing and turn 1/8 until it snaps in.
8. Put 3 inch cover back on.
9. Place filter cover back on and hand tight the 4 screws.
10. Close hood.

Dec 12, 2008 | 2005 Chevrolet TrailBlazer

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