Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

6.5 stalling

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  #1  
Old 03-01-2009 | 10:42 PM
Heavy Gun's Avatar
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Default 6.5 stalling

Hey guys just wondering if any one knows what to check/fix when you get the obd2 code P0231B which states lift pump secondary voltage low? Any help would be greatly appreciated.
 
  #2  
Old 03-05-2009 | 05:12 AM
wildbill's Avatar
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From: Billlings, MT
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Sounds like it's time for a new lift pump.
 
  #3  
Old 03-09-2009 | 07:39 AM
Turbine Doc's Avatar
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Probably bad OPS which sends power to lift have a read here Lift Pumps & OPS operation and troubleshooting - DieselTowingResource.com some reference material I put together
 
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