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Duramax Fourth Generation: 2007.5-2010 (LMM) Discuss the fourth generation (2007.5-2010) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 10-05-2009, 06:38 PM   #1 (permalink)
montanajoe
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check engine light after fuel filter change

hello to all,
changed my fuel filter for the first time on my 2007 1/2 LMM , 2500HD, with 14,000miles on it . now check engine light is on. any one know what to do?. thank you
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Old 10-05-2009, 07:19 PM   #2 (permalink)
Tanc Crusher
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Goto an autoparts store and have truck scan. Up to you if you want to reset it or not. May get the code and post back and will help you figure it out. Truck is all stock right?

Brian
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2007.5 GMT-900 Chevrolet Silverado 2500HD CC/LB LTZ 4x4 Summit White. 4-18-2007. Powered by the LMM Duramax 365hp/660tq coupled to the MW7 Allison 1000 6-speed through the NP1 NP263XHD Transfercase.
Upgrades: Performance Truck Products for 5" MBRP Turboback 6020AL. Alligator Performance for EGR Blocker. DuramaxTuner for EFI-Live with DSP5 ECM Tune and TCM tune. Meyer Performance for Airdog 150 Gen 1 Lift Pump, Diamond Down Pipe. Merchant Automotive for Suncoast IV with 1056 converter, Amsoil Synthetic Fluid in everything, Pitman Arm Fix.
Configure your FlashScan V2 the way it should be http://www.dieselplace.com/forum/sho...d.php?t=401770
Future: SDP S475 Twin Setup is here-install 6-18-11. On board Air with Side Step Tube Air Tanks, Custom Bed Fuel Tank and Water/Meth Tank.
New Toy: 2012 Dodge Challenger SRT8 Red and all stock for now.

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Old 10-05-2009, 07:42 PM   #3 (permalink)
Wa_rWagon
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Did you have trouble with the water in fuel sensor? The dealer may warranty that sensor once. The wires are really fragile.
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Old 10-05-2009, 10:34 PM   #4 (permalink)
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Disconnect the WIF sensor wires and see if the light goes out. It is possible that you have a short in the sensor.
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Old 10-06-2009, 06:32 PM   #5 (permalink)
montanajoe
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check engine light

yes my truck is all stock. i looked in the book on my truck ,and it says to drive it for 50 to 100 miles and if the computer doesnt see anything wrong , it will reset the light and go out. i think i will also call the dealer to see what they say, ( truck is still under warrenty). thank you for all your help.
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Old 10-06-2009, 06:43 PM   #6 (permalink)
GaryK
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I know this might be a stupid question, but did you plug the sensor back in?
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Old 10-06-2009, 06:45 PM   #7 (permalink)
Bartman432
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Did you remember to bleed the system of air.
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Old 10-06-2009, 07:11 PM   #8 (permalink)
montanajoe
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check engine light

yes i did plug it back in, and i did what the book said to do , after everything was all put back , i opened the little screw on top ,and pumped the primer until fuel came out the screw hole. close the screw. the truck started right up, but the came on too.
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Old 10-06-2009, 09:01 PM   #9 (permalink)
Tanc Crusher
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If you get a chance before going to dealer just run by autoparts store and have them read the codes and post them back here.

Brian
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2007.5 GMT-900 Chevrolet Silverado 2500HD CC/LB LTZ 4x4 Summit White. 4-18-2007. Powered by the LMM Duramax 365hp/660tq coupled to the MW7 Allison 1000 6-speed through the NP1 NP263XHD Transfercase.
Upgrades: Performance Truck Products for 5" MBRP Turboback 6020AL. Alligator Performance for EGR Blocker. DuramaxTuner for EFI-Live with DSP5 ECM Tune and TCM tune. Meyer Performance for Airdog 150 Gen 1 Lift Pump, Diamond Down Pipe. Merchant Automotive for Suncoast IV with 1056 converter, Amsoil Synthetic Fluid in everything, Pitman Arm Fix.
Configure your FlashScan V2 the way it should be http://www.dieselplace.com/forum/sho...d.php?t=401770
Future: SDP S475 Twin Setup is here-install 6-18-11. On board Air with Side Step Tube Air Tanks, Custom Bed Fuel Tank and Water/Meth Tank.
New Toy: 2012 Dodge Challenger SRT8 Red and all stock for now.

Check out: My Garage for pics of the Truck, Mods, and Toys.
UA Steamfitter, Local 136 Evansville, IN
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Old 10-07-2009, 06:29 PM   #10 (permalink)
montanajoe
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check engine light

called a couple of auto parts stores, they said they didnt have a code reader for diesel. taking it to the dealer on friday, still under warrenty, so i wont have to pay. will let you know the outcome. thanks again.
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