Question about 2003 Chevrolet Tahoe

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Check engine light "reduced enging power" message?

2003 Tahoe 92000 miles no previous check engine lights in past. Last nite light came on and message on instrument panel read "reduced engine power". This morning the message is gone but check engine light is still on. Wasnt sure if the light is just a reminder to change timing belt or have some regular maintenance performed. any ideas?

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  • nizaka Apr 14, 2009

    I have the same problem.  I have not been able to find a solution.  The truck will run fine 400-500 miles and then it happens again.



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Hook it up to OBD 2 scan retrieve fault code and go from that point!

Posted on Dec 24, 2008

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Reduce engine power that code is came from your trotttle body check for the faulty wiring and check also the power ground its located top left rear of the intake

Posted on Jan 19, 2015


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