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Duramax Second Generation: 2004.5-2005 (LLY) Discuss the second generation (2004.5-2005 LLY) of the 6.6L Duramax diesel engine & associated components. 2006 LLY engine discussion belongs in Third Generation forum due to the differences of the 2006 LLY and the 2004.5-2005 LLY. Engine related discussion ONLY.

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Old 02-25-2013, 04:54 PM   #11 (permalink)
Lo-Buk
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good tip! i'll try it since its been too warm the last couple days to activate it.
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'liLLY' 05 duramax 2500 CCSB 4X4-260,000 miles
Limitless Diesel Built trans with Suncoast 1054 converter, Grade C's, ARP head studs, PPE Standard, Edge insight cts w/ EGT probe, Magnaflow 3" downpipe, Silverline 4" straight pipe (sounds great, fits like shit), 265 transforce, Bilstein 5100s , pcv rerouted, egr blocked, unplugged & bypassed, kitty delete, AFE turbo inlet, Reese wd/ anti sway hitch (cam style with trunion bars), Pacbrake airbags, 110 gallon aux fuel tank, Merchant 'all on' module, transfer case rebuilt (merchant delux bearing kit, pump rub kit and case half), home made winter front and a bunch of little stuff.


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20' mgs tilt bed open trailer
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Old 03-06-2015, 04:35 AM   #12 (permalink)
Lo-Buk
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Well, I changed the brake light switch, unplugged the brake controller and it worked.....for 2 years.....
Now, its out again.
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UWUA AFL-CIO Local 1-2
'liLLY' 05 duramax 2500 CCSB 4X4-260,000 miles
Limitless Diesel Built trans with Suncoast 1054 converter, Grade C's, ARP head studs, PPE Standard, Edge insight cts w/ EGT probe, Magnaflow 3" downpipe, Silverline 4" straight pipe (sounds great, fits like shit), 265 transforce, Bilstein 5100s , pcv rerouted, egr blocked, unplugged & bypassed, kitty delete, AFE turbo inlet, Reese wd/ anti sway hitch (cam style with trunion bars), Pacbrake airbags, 110 gallon aux fuel tank, Merchant 'all on' module, transfer case rebuilt (merchant delux bearing kit, pump rub kit and case half), home made winter front and a bunch of little stuff.


28' haulmark race trailer
20' mgs tilt bed open trailer
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Old 03-06-2015, 05:59 PM   #13 (permalink)
chriss8935
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Try clearing your codes even if none show up. I have had the same thing happen to me, I have the steering wheel controls and the high idle function has randomly disappeared completely. I have had no codes show up on EFI live but cleared just for kicks and the high idle feature showed right back up. Very strange but has worked for me, maybe worth a try.
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2004.5 LLY 2500HD EFIlive , EGR blocked, PCV reroute, resonater plugged, nicktane fuel filter adapter, 4in magnaflow exhaust, LBZ mouthpiece, AFE CAI, ARP head studs, MA700 trans with brace and pump rub fix by Merchant auto.

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