what i can do. my truck turns a light on REDUCE POWER ENGINE on 2003 GMC Sierra 1500

I have turn off the motor and restarting the engine

by in Bakersfield, CA on March 27, 2013
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2 answers
ANSWER by , March 27, 2013
your sensors telling you there is a prob. get diagnostic run to find out what it is. might be easy fix now or big fix later. best to find out.
ANSWER by , March 28, 2013
have codes scanned and post so we can adv