Question about 2003 Chevrolet Silverado 2500HD

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Reduced Engine Power. I need a solution to this problem no one can seem to figure it out. The truck is a 2003 2500HD silverado

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Check the wires going to the throttle body i have seen them brake that throws a low engine power code

Posted on Jan 03, 2011

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Posted on Jan 02, 2017

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My engine speed reduced light came on along with traction turned off on my 2009 Pontiac g6. when i accelerate it jerks.


Reduced engine power on GM vehicles has to do with the electronic throttle control .( Electronics ) Your best bet is to take your vehicle to a qualified repair shop or a GM dealer ! GM Reduced Engine Power Mystery Solved 04 Silverado REDUCED ENGINE POWER Case Study Part 1

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Engine Reduced Power massage ! Has to do with the electronic throttle control ! 04 Silverado REDUCED ENGINE POWER Case Study Part 1

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2003 Silverado 2500HD REDUCED ENGINE POWER - Discussion on Topix

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Dec 10, 2012 - Tech Tip: Reduced Engine Power Message Displayed on GM Vehicles ... Model year 2008-'10 vehicles must have the engine control module (ECM) reprogrammed ... Do not drop the electronic throttle control components.

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1 Answer

What does mean reduced engine power in a 2003 chevy silverado


APP 1 and APP 2,Throttle position correllation. Whenever you get a reduced power,It will always be related to the throttle actuator, or APP (accelerated pedal position).There is a disagreement between both position sensor, or the TPS itself.

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Reduced engine power?


REDUCED ENGINE POWER.HAVE VECHICLE SCANNED AT DEALERSHIP BECAUSE YOUR ENGINE HAS A MECHANICAL FAILURE.LIKE POWER STEERING PUMP OR APP SENSOR FAULT.I

Sep 12, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

Reduced engine power silverado 2006.Engine light came on.Stopped vehicule shut off engine and restarted.engine light stayed on and had lots of power.


You need to have the computer scanned for trouble codes. Whatever happened stopped after you restarted the engine, but the engine light wont go off until the ignition cycles many times without any problems. Any parts store will scan your truck for free. Have them scan it and clear the codes, and come back here and let us know what code/s you get.

May 16, 2010 | 2006 Chevrolet Silverado

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My 2005 c5500 only does 20 mph,changed fuel filter,engine light is on


There is an issues that prompt the ECM to put the "reduced engine power" mode to activate. Your going to have to get the DTC code to addressed the issue so the ECM will deactivate the "reduced engine power" mode.
Thank you for using Fixya and Auto Zone can scan free of charge and give you the recommendation to address the issue and as why your engine is in the reduced power mode. Good luck

Mar 31, 2010 | 2005 Chevrolet Silverado 3500

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