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How to code a 2002 trailblazer - 2002 Chevrolet TrailBlazer

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Purchase an actron code display from your local autostore...purchase a haynes manual for your car and it will list the codes.

Posted on Oct 08, 2009

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My 2002 chevy trailblazer abs goes off everytime I hit the brakes but the light never goes off. Any suggestions ?


Get codes read by someone with GOOD scan tool that will pull ABS codes (many won't do this).

Jan 27, 2015 | 2002 Chevrolet TrailBlazer

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Po101 code


P0101 is a mass air sensor code - problem is a 2002 trailblazer doesn't have a mass air - you must have the wrong code.

Jan 15, 2014 | 2002 Chevrolet TrailBlazer

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2002 chevy trailblazer his 127.016ml and service engine soon light is on


Take it to a Autozone or a place that will check this light for you for free. They will typically give you a printout with a code. Let me know what code is pulling up, starts with Pxxxx

Mar 31, 2011 | 2002 Chevrolet TrailBlazer

2 Answers

2002 Chevy trailblazer was put on machine and had codes U1041-P1633 and P0014 stored in ECM What does this mean?


2002 Chevy trailblazer was put on machine and had codes U1041-P1633 and P0014 stored in ECM What does this mean

May 29, 2010 | 2002 Chevrolet TrailBlazer

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The 'check engine' light and the 'reduce power engine' light came on on my 2002 chevy trailblazer what could this mean?


A sensor failed. A code will be stored. You need to get the code in order to proceed. With over 200 possible codes its anyones guess what happened.

May 18, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

2002 Chevy Trailblazer surges on the highway. Tach bumps up 100-200 rpm while occurring.


I would be suspect of the throttle position sensor, but have the codes read, WRITE THEM DOWN (if there are any), and report back here. TPS's failures will sometimes throw a code but does not require a CEL when they do.

Dec 21, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

Engine is racing


The vehicle should have a stored trouble code, go to an Auto Zone they will read the code for free. Usually idles surges are caused by a malfunctioning TPS sensor or throttle position sensor.

Oct 06, 2009 | 2002 Chevrolet TrailBlazer

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2002 chevy trailblazer what does EVAP Emission control system malfunction code #P0440 on an actron code scanner


most p0440 codes are related to gas cap problem check cap and reset code if it the problem code pops problem with a fuel line follow lines from filler neck down and under vehicle[ look for smell of gas or cracked line] all the way up to throttle body if have leak fix asap

Sep 21, 2009 | 2002 Chevrolet TrailBlazer

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2002 Chevy Trailblazer Engine Codes


This is actually an easy swap out. Remove the electrical connection, remove the retaining bolt and pull out old one. I believe the sensor is located in the front passenger side of the engine on this particular model.

Jul 06, 2008 | 2002 Chevrolet TrailBlazer

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