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Q: i have a 2003 gmc sierra 2500hd 6.0 when driving running at reduced power on 2003 GMC Sierra 2500 HD

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the truck will run at reduced power and show the same on disply shut tr off and re-start and will run fine until it does it again is not aheating problem.thank you
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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