Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

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Old 09-19-2011, 01:26 PM
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changed all fuel filters runs and idles fine but fall on its head at 2000 rpms whats wrong with it will a senor do ithat?
 
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Old 09-19-2011, 01:27 PM
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was it doing that before the filter change?
 
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Old 09-19-2011, 01:29 PM
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yes it was a check engine light came on then went out
 
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Old 09-19-2011, 09:15 PM
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Codes?
 
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Old 09-20-2011, 09:01 AM
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Any mods like a programmer or lift pump?
What are the codes being thrown?
Does it do it all the time or on hard accel or only when towing?
 
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