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Old 07-06-2015, 10:17 PM   #1
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Angry Duramax Diesel Message - Engine Reduced Power

Hello
We have a 2008 Chevy Silverado with 6.6L Duramax Diesel. If we are towing and go over 60 MPH, we get a dashboard message which says "Engine Reduced power". The motor powers down and we cant go any further. We have asked different GM service shops and no one seems to be able to help us. We have discovered that once we prime the fuel canister and restart the truck, we have power again. Note, we are not over weight capacity.
Has anyone experienced this or can help us determine what the problem is?
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Old 07-06-2015, 10:39 PM   #2
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Not sure but here is a forum that I belong to.

Chevy and GMC Duramax Diesel Forum
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Old 07-06-2015, 10:39 PM   #3
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Not sure if you know of this site or not but you may find your answer here:

Diesel Place: Chevrolet and GMC Diesel Truck Forums

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lol, now you have 2
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Old 07-06-2015, 10:44 PM   #4
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Hey! i had looked on that forum but couldnt find anything specific. I will try again. Thanks!
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Old 07-06-2015, 10:47 PM   #5
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is the check engine light on?
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Old 07-06-2015, 10:53 PM   #6
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Duramax slowdown

Call Ontario have them run a diagnostic test for you
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Old 07-06-2015, 10:54 PM   #7
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Tech Tip: Reduced Engine Power Message Displayed on GM Vehicles
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Old 07-06-2015, 10:55 PM   #8
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Correction call Ontar have them run a diagnostic test for you
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Old 07-06-2015, 11:10 PM   #9
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yes, the check engine light comes on.
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Old 07-06-2015, 11:11 PM   #10
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What's the code?

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