Question about Chevrolet TrailBlazer

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When ever the reduce engine power light comes a 2002 trailblazer 4.2 the suv act like it dont want to change gears and idles real high.

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Need to have the engine scanned to see what part of the system is causing the service engine soon light to come on and to see what's causing the idle to be really high.

Posted on Aug 06, 2010

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Posted on Jan 02, 2017

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Emission light came on and so did reduce power light. It happens when I quickly excellerate from 10 mph but will reset if turned off


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.

Oct 15, 2015 | 2002 Chevrolet TrailBlazer

1 Answer

2002 trailblazer oil pressure drops when stopped returns accelerating


Usually means the engine bearings are worn out, or the oil pump is weak.
As the oil gets hot, it gets thinner, which reduces pressure. When the engine is at idle speed the pump is not pumping as fast as it is at highway speed.

Aug 26, 2015 | 2002 Chevrolet TrailBlazer

1 Answer

Reduced engine power light stays on and it looses power as soon as I pull out. have to restart it and it revs high not wanting to change gears until 3500 rpm


sounds like your PCM you should have codes pulled on it at a local dealer or take it to a auto care place that will pull them for free

Dec 19, 2014 | 2002 Chevrolet TrailBlazer

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

Where is the idle air control on a 2002 trailblazer? we have done a tone up it idles real bad at a stop dont have much power. check engine light flashes most the time, it will stay on for a short time an...


Truck should not be driven when the check engine light flashes, means you have something very wrong. Take it to a place like Autozone, they will check the code (check engine light) for free. There will be a code on the print out they give you, starts with Pxxxx. Let me know what the code is. What was done when you did the tune up?

Apr 15, 2011 | 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

1 Answer

2002 chevy tb reduce engine power light goes on


look i think you maybe have a problem in the fuel tank or fuel lines because you do change the ECU and all the sensors still work if you looking for a broken hose inside the tank that produce a lost fuel pressure only when the engine is work a while or looking for stuck fuel filter o dirty injectors o vaccum hose broken o manifold vaccum leak

Jul 09, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Chugging at idle


check oil level might be too full or air cleaner box not fitted correctly or hose from air cleaner to engine not sealed correctly.

May 03, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

Check gage light comes on for 2004 chevrolet trailblazer''


Check gauge light can come on for a number of different things, from Low fuel to low oil pressure to high engine temperatures. When the light comes on check all the gauge's and see whats causing it, one or more of the gauge's will be showing an issue, Low fuel or low oil pressure, Low battery power. Any of the mentioned things can cause it... Figure out whats causing it then you can remedy the situation...

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