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Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. Tips on performance, fuel economy, troubleshooting and more.

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Old 11-27-2018, 04:30 PM
firedreamer firedreamer is offline
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Join Date: Nov 2016
Location: USA, Oregon
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Default Eng going into Limp? HELP

So, folks I need some help, we have a 2005 Silverado 3500 DRW LB 4x4 with the LLY Eng. We are full time RVers and have had no problems the last 2 yrs. towing a 15,000# worth of 5th wheel. Well I have had the truck go into what I think is the
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2005 Silverado 3500 dully 6.6 LLY 4.10 rearend
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Old 11-27-2018, 06:55 PM
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JohnC JohnC is offline
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Location: New Hampshire - Live Free or Die
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I think you're going to have to give us a little more information before we can be of much help.
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"Need" - Wanting to get someone else's money.
"Greed" (formerly meant what "need" means today) - wanting to keep your own.
"Compassion" - a politician's willingness to arrange the transfer.
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Current oil burners: MB 350SDL, Kubota 7510
Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6
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Old 11-28-2018, 11:51 AM
CoyleJR CoyleJR is offline
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Join Date: Dec 2000
Location: Hawaii/Arizona
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Newbie,

Your truck looks very much like my 2006 D/A Silverado (that is good). The first thing I would suggest is to grab the fuel filter and try to tighten it. Both my LLY, RV and my LBZ Silverado have gone into limp mode because they suddenly decided to suck air at the fuel filter. A little twist to tighten the fuel filter and water drain fixed both vehicles. If that isn't the problem you need to post your truck's fault codes so it can be diagnosed by DP members. if you don't have a scanner to retrieve the codes go to an auto parts store and they will usually retrieve the codes for you.

Good luck
John
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*2006 Chevy, 3500, 4X4, DRW, (LBZ) D/A, CC, LT, 252K Miles, 19.5" Wheels, Mag Hytec Transmission Pan and Differential Cover, SS Grill Guard, Racor 2 micron aux fuel filter, 100 Gallon Aux Fuel Tank, using Edge Evolution, Predator Diablosport, Kennedy ECM tune, Fitch Fuel Catalyst.

*2006 Four Winds, Dutchman, 36', RV, D/A, 5500 Kodiak.
*1993 Harley Davidson, Turbo charged, Springer Softail.
*2007 Pontiac Solstice.
*2005 Jeep, Liberty, CRD (diesel).
*Full-timing in USA, see America first.

BUY AMERICAN or CANADIAN, NOTHING from CHINA .
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Old 12-01-2018, 11:22 AM
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JohnC JohnC is offline
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Weird...

This guy has three posts total, all thread starters, all questions (if you call this one a question), and no response from him after.
__________________
"Need" - Wanting to get someone else's money.
"Greed" (formerly meant what "need" means today) - wanting to keep your own.
"Compassion" - a politician's willingness to arrange the transfer.
-Joseph Sobran

Current oil burners: MB 350SDL, Kubota 7510
Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6
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