Question about 2002 Chevrolet TrailBlazer

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Where is the air filter on 02 trailblazer - 2002 Chevrolet TrailBlazer

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It is in the passenger side corner over the washer bottle under the hood. it is held down by 4 screws. torx20 screws. sometimes you also have to remove the fender brace that is above it. it is black with a white emission sticker on it

Posted on Jul 28, 2009

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Are you retarded?

Posted on Jul 28, 2009

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Posted on Jan 02, 2017

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Trailblazer loses power. changed the o2 sensors, secondary air injection pump check valve,transmission oil an filter,an fuel filter. what other thing can be wrong


Hmm, I thought the fuel filter on 05' was on the pump in the gas tank. Must of started that in 06', mine is in the tank which sucks, my older 02' is external. Have you cleaned your throttle body? If not, likely this is your problem. We don't have a pcv system so our throttle bodies collect lots of carbon and gunk. Remember to unhook the batter while you remove the tb. 4 bolts, and you can reuse your hard gasket many times over. I like using Seafoam spray and rag to clean as it's sensor safe.

Mar 28, 2014 | 2005 Chevrolet TrailBlazer LS

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02 Trailblazer misfire


Here's a link to your code.

May 29, 2013 | Cars & Trucks

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03 trailblazer 4.2 l code p0172 has no power


P0172 02 sensor is detecting that the system is running too rich. An 02 sensor that is starting to go out will pull this code, but the following will cause the 02 sensor to throw this code as well:

A few things to look at. 1st thing I'd do is clean your throttle body with the battery disconnected. Use sensor safe throttle body cleaner, about $4.

From there, I'd look at your upstream 02 sensor, located on the exhaust manifold on passenger side of engine, very easy. Try and stay away from Bosch if possible.

New fuel filter, clean or replace your MAF sensor located on top of engine next to firewall. Also, probably time to change your spark plugs. I recommend A/C Delco 41-103, will idle better than other brands.

Jun 20, 2011 | 2003 Chevrolet TrailBlazer

2 Answers

Is it hard to tune-up a 2004 Trailblazer yourself? It looks like there are several things that need to be taken off before the sparks/plugs can be replaced.


To replace spark plugs, the plastic intake that goes over top the engine needs to be removed, and all electrical connectors for sensors that are attached to it. After that just remove the ignition coils and there are the spark plugs.

Jun 06, 2011 | 2004 Chevrolet TrailBlazer

2 Answers

Stalling 02 Chevy Trailblazer


check fuel pump pressure or clogged fuel filter

Oct 06, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

02 Trailblazer Rear Blower Doesn't Always Blow.


More then likely the brushes are sticking in the blower motor.

Apr 19, 2017 | 2002 Chevrolet TrailBlazer

2 Answers

SEEMS LIKE CAR IS SLUGGISH AND LOOSING POWER WHEN TEMP IS HOT.


id maybe try going back to 87 octane gas cause 93 may make it run better but it will run hotter too and that can cause premature detonation and spark knock

Jun 28, 2009 | 2002 Chevrolet TrailBlazer

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