Question about 2002 Chevrolet TrailBlazer

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Reduced engine light on in my 2002 trailblazer

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  • Marvin
    Marvin Jul 17, 2010

    do u have a check engine light (yellow light) as well?

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  • Chevrolet Master
  • 1,311 Answers

You need to have car scanned for fault codes, go to AutoZone they do it for free. They will tell you the reason for the reduced engine light and the check engine light.

Posted on Oct 12, 2010

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Posted on Jan 02, 2017

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SOURCE: the 'check engine' light and the 'reduce power

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.

Posted on May 18, 2010

  • 508 Answers

SOURCE: 2002 reduced engine power light

You have some kind of ECU problem. You will need to hook to the diagnostic port to find the problem. Your vehicle has gone into limp mode. This enables the vehicle to run, but at a diminished level until you can seek help for the problem. Do not continue to drive it this way as you may cause damage to the engine depending on the nature of the problem.

Posted on Feb 17, 2009

DLRFIXSMYCAR
  • 14 Answers

SOURCE: hi i have a 2002 trailblazer and i was on my way

i had a similar issue today, but it was after an accident. I hit a dog, a very large dog. Anyway, the battery ran out from my having my hazards on, and then the key got stuck in the vehicle. No power, no turning over etc. The tow truck guy boosted the battery, and then pushed in (with a long screwdriver) the switch that is under the steering wheel. He wiggled the sterering wheel a bit as well, and voila, out came the key. this is a feature that GM put in their vehicles. Very common problem, and once power to vehicle it spits out the key.

Posted on Jul 10, 2009

dj_relly999
  • 4070 Answers

SOURCE: my 2002 chevy trailblazer reduced engine light and

good day. you may have a faulty battery, have it checked. if the battery is fine then you may have an alternator problem, have it replaced. hope this helps, have a nice day

Posted on Feb 04, 2010

  • 89 Answers

SOURCE: 2002 Chevy Trailblazer

hi, those sound like throttle actuator codes. the throttle body on your vehicle should be an electronically controlled unit without wires to control actual acceration an deceleration. now, there is also an electronic switch called a potentiometer on the gas pedal that transmits signal to the throttle body to tell it what to do. most of the time, the throttle body is what goes bad here. you should also check the wiring to the unit for bad connection by wiggling the wire connector and seeing if the reduced engine power light comes on. if this happens, you will likely have to replace the wiring pigtail and the throttle body. but, in some cases, the gas pedal switch goes bad, and likely what is not allowing the transmission to shift out of park, the pcm may lock out the solenoid controlling the shifter. but, don't just run with that answer, it maybe completely wrong. i have seen more throttle bodies and wiring harnesses go bad than gas pedal switches in those vehicles. but you might want to have a shop diagnose further, it may even be two unrelated problems, or in the powertrain computer itself.

Posted on Jun 19, 2010

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1 Answer

Engine codes 1415 and 1345 on a 2002 4.2 chevy trailblazer ls


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2003 Chevy Trailblazer-CHECK ENGINE LIGHT AND REDUCED ENGINE POWER ...

www.topix.com > California > San Diego County > Oceanside
Dec 23, 2011 - 2003 Chevy Trailblazer-CHECK ENGINE LIGHT AND REDUCEDENGINE POWER ... The reduced engine power ligth comes on and I lose power. ...Next, the fan clutch failed -- which is when he did an "above and beyond" .... yesterday I have not replaced anything bc they have told me nothing is wrong.

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2002 trailblazer oil pressure drops when stopped returns accelerating


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2 Answers

Chevy Reduced Engine Power and Auto Gear Transmission


still sounds like another sensor is bad. take it to shop and have it tested would be my suggestion. good luck.....

Aug 13, 2012 | 2002 Chevrolet TrailBlazer

1 Answer

The reduce engine power light has came on I have a 2002 Chevy Trailblazer, what does this mean?


A lot of times it's a filthy or sticking throttle body. With this situation, the computer will throw the reduced engine power light as kind of a safe mode. A lot of times, you won't be able to go past a certain speed too. With the battery disconnected, clean your throttle body with throttle body cleaner. Must be shiny. When finished, drive around for 20 minutes or so, so your computer can re-learn the correct settings of a newly cleaned throttlebody. When driving for 20 min, make sure all accessories are off.

Jan 27, 2011 | 2002 Chevrolet TrailBlazer

1 Answer

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

2 Answers

Reduced engin power light is on


Your Trailblazer's ECM has detected an issue with your engine's performance and has reduced the power till the issue has been addressed. Auto Zone can scan your Trailblazer for the DTC codes and can give you the recommendation for you to address the issue causing your engine to reduce the power. There are just to many things that can cause the engine to reduce the power, so the best bet is to have it scanned and Auto Zone scan free of charge. Good luck and hope this helps.

Feb 01, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Reduce engine light comes on with a/c use.


Most likely it is the fan clutch as it is computer controlled. I have had 2 in the shop this year with the same problem. To be sure, have someone check the codes before you start spending your hard earned dollars.

Aug 31, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

2002 reduced engine power light


You have some kind of ECU problem. You will need to hook to the diagnostic port to find the problem. Your vehicle has gone into limp mode. This enables the vehicle to run, but at a diminished level until you can seek help for the problem. Do not continue to drive it this way as you may cause damage to the engine depending on the nature of the problem.

Feb 16, 2009 | 2002 Chevrolet TrailBlazer

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