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Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

Chug??

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Old Sep 15, 2008 | 08:55 PM
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Duramax03's Avatar
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From: pigeon, mi
Default Chug??
my 03 duramax when ur goin down at around 70 and over it kinda "chugs" or it seems that is has a miss..
ne ideas on what that would be?
 
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Old Sep 16, 2008 | 05:11 PM
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2500HeavyDuty's Avatar
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From: Houston, Tx
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what have you had done to your truck?

parts/progamming wise
 
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Old Sep 16, 2008 | 05:39 PM
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From: BFE
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Could be about anything. With out know much of what is going on i would say it is fuel related like a fuel pump or something like that. Give us some more info and we will help ya out bud.
 
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Old Sep 16, 2008 | 07:43 PM
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From: pigeon, mi
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umm..rite now it has a programmer that i bought it downloaded already...4 inch exhaust..
and thats about
tommrow im goona change the fuel filter and see if thats wat it could be
 
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Old Sep 19, 2008 | 09:02 PM
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anything changed with the ff swap?
 
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