Question about 2003 GMC Sierra 2500HD

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2003 GMC 2500HD 6.0 ENGINE, AS I TRAVEL IN COLD WEATHER A LIGHT COMES ON THAT SAYS "LOW ENGINE POWER" AND I CAN NOT GIVE IT THE GAS. THE TRUCK NEVER SHUTS OFF BUT I CAN NOT GIVE IT THE GAS, HOWEVER IF I TURN THE TRUCK OFF FOR AS LITTLE AS 2 MINUTES, IT STARTS UP AND RUNS FINE UNTIL I GO ABOUT 10 MILES FURTHER. DOES THIS IN COLD WEATHER ONLY, IN THE MIDDLE OF THE DAY WHEN THE WEATHER WARMS UP, IT DOES NOT DO IT.

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Need to have scanned to pull the codes and see what is setting. computer goes into reduced power when it detects a fault. one of the most likley cuases will be the throttle body or electric connector to it. if you have someone pull the codes i can assist you further

Posted on Nov 11, 2010

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Posted on Jan 02, 2017

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