Threads 1 to 14 of 14

Forum: 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.

  1. Wink Sticky Thread Sticky: Duramax Head Gasket Replacement

    Started by More Power, 05-31-2021 06:10
    9 Pages •
    1 2 3 ... 9
    duramax, head gasket replacement 4 Attachment(s)
    • Replies: 163
    • Views: 233,440
    More Power
    12-16-2025, 13:46 Go to last post

  2. Sticky Thread Sticky: High Miles contest!

    Started by More Power, 11-29-2005 07:23
    6 Pages •
    1 2 3 ... 6
    6 Attachment(s)
    • Replies: 109
    • Views: 261,632
    arveetek
    10-29-2025, 06:29 Go to last post

  3. Sticky Thread Sticky: P0087 fuel rail pressure low limp under high loads

    Started by Mark Rinker, 08-14-2009 20:26
    12 Pages •
    1 2 3 ... 12
    1 Attachment(s)
    • Replies: 225
    • Views: 576,884
    arveetek
    05-26-2025, 15:39 Go to last post

  4. Sticky Thread Sticky: LBZ Fuel Mileage

    Started by Dannyboy, 03-10-2006 15:46
    9 Pages •
    1 2 3 ... 9
    • Replies: 168
    • Views: 395,229
    a5150nut
    12-30-2023, 15:22 Go to last post

  5. Thumbs up Sticky Thread Sticky: 2004 Duramax 6.6 Liter Diesel Engine Assembly Torque Specifications

    Started by RXTII, 12-27-2007 20:02
    • Replies: 5
    • Views: 57,057
    More Power
    06-03-2022, 09:59 Go to last post

  6. Sticky Thread Sticky: Dexcool vs. other coolants

    Started by TomJ01, 12-01-2010 16:01
    • Replies: 13
    • Views: 92,816
    More Power
    10-28-2020, 13:47 Go to last post

  7. Sticky Thread Sticky: Additional fuel filtration / injector replacement poll

    Started by Mark Rinker, 08-16-2008 09:10
    2 Pages •
    1 2
    • Replies: 29
    • Views: 68,900
    EdHale
    10-04-2020, 03:07 Go to last post

  8. Sticky Thread Sticky: Gasoline in my 6.6 Duramax

    Started by Javy, 06-01-2006 18:36
    2 Pages •
    1 2
    • Replies: 32
    • Views: 117,421
    DmaxMaverick
    05-21-2020, 11:15 Go to last post

  9. Poll Sticky Thread Sticky: Poll: 2004.5+ LLY Duramax Fuel Economy Poll

    Started by More Power, 12-31-2004 14:27
    6 Pages •
    1 2 3 ... 6
    • Replies: 117
    • Views: 289,149
    wmholden
    10-29-2018, 12:13 Go to last post

  10. Sticky Thread Sticky: 2001 LB7 fuel system/limp mode problem SOLVED

    Started by maverick2, 04-09-2010 12:46
    • Replies: 18
    • Views: 87,977
    Kennedy
    10-23-2017, 07:57 Go to last post

  11. Sticky Thread Sticky: DTC Codes-Definitions

    Started by MAV, 09-27-2003 06:24
    • Replies: 7
    • Views: 57,048
    DieselDavy
    09-07-2017, 16:45 Go to last post

  12. Arrow Sticky Thread Sticky: LML Fuel Economy

    Started by cowboywildbill, 04-29-2011 06:46
    • Replies: 18
    • Views: 64,604
    philstat
    07-13-2016, 07:27 Go to last post

  13. Poll Sticky Thread Sticky: Poll: 2001-early 2004 LB7 Duramax Fuel Economy Poll

    Started by More Power, 12-31-2004 14:35
    6 Pages •
    1 2 3 ... 6
    • Replies: 113
    • Views: 352,096
    chessy56
    01-19-2016, 14:50 Go to last post

  14. Arrow Sticky Thread Sticky: LMM Fuel Economy

    Started by More Power, 04-11-2007 22:20
    5 Pages •
    1 2 3 ... 5
    • Replies: 98
    • Views: 289,797
    prairiewind
    01-24-2013, 06:38 Go to last post

  15. Sticky Thread Sticky: New to Forum: How to tell type of Engine

    Started by bradjedis, 06-18-2007 10:41
    • Replies: 11
    • Views: 53,149
    Kennedy
    03-23-2010, 10:03 Go to last post

  16. Sticky Thread Sticky: Postings in the 'Duramax 6600' forum

    Started by Mark Rinker, 08-03-2007 07:58
    • Replies: 0
    • Views: 20,353
    Mark Rinker
    08-03-2007, 07:58 Go to last post

  1. anti freeze question..,,,

    Started by spongebob, 12-14-2025 16:08
    • Replies: 13
    • Views: 160
    spongebob
    12-17-2025, 18:15 Go to last post

  2. coolant leak

    Started by spongebob, 11-18-2025 10:06
    • Replies: 4
    • Views: 287
    spongebob
    12-11-2025, 18:05 Go to last post

  3. egr heater pipe part

    Started by spongebob, 12-08-2025 17:50
    • Replies: 6
    • Views: 252
    spongebob
    12-11-2025, 18:02 Go to last post

  4. Heater hose "quick" disconnect....how to

    Started by spongebob, 11-27-2025 16:13
    • Replies: 11
    • Views: 626
    Yukon6.2
    12-05-2025, 10:05 Go to last post

  5. 2018 l5p grenade

    Started by Dvldog8793, 11-22-2025 15:59
    • Replies: 4
    • Views: 506
    Dvldog8793
    11-28-2025, 16:05 Go to last post

  6. Crank NO Start 2002 2500HD LB7

    Started by dgalvin66, 01-31-2025 16:03
    • Replies: 12
    • Views: 3,456
    DmaxMaverick
    10-16-2025, 15:15 Go to last post

  7. Arrow Video - Giant Slayer - Duramax 6600 Origin Story

    Started by More Power, 08-20-2025 09:11
    duramax 6600, giant slayer, origin story, video
    • Replies: 2
    • Views: 665
    More Power
    08-22-2025, 08:12 Go to last post

  8. Now I have a P2563 code...

    Started by spongebob, 07-25-2024 09:29
    • Replies: 17
    • Views: 13,561
    a5150nut
    07-21-2025, 09:33 Go to last post

  9. Arrow LB7 Injectors...

    Started by More Power, 03-18-2016 10:18
    • Replies: 5
    • Views: 9,608
    More Power
    07-13-2025, 12:43 Go to last post

  10. My cost to replace my 6.6

    Started by spongebob, 12-28-2023 13:33
    2 Pages •
    1 2
    • Replies: 24
    • Views: 19,323
    DieselDavy
    07-09-2025, 21:58 Go to last post

  11. L5P: Balance rate criteria changed?

    Started by chessy56, 08-17-2023 06:45
    • Replies: 4
    • Views: 5,250
    More Power
    04-02-2025, 09:42 Go to last post

  12. do injector cleaners work?

    Started by spongebob, 03-12-2025 08:48
    • Replies: 7
    • Views: 1,602
    DIESEL/VETTE
    03-20-2025, 18:29 Go to last post

  13. Allison trans issue

    Started by Cold water, 01-22-2025 14:25
    • Replies: 4
    • Views: 1,701
    Cold water
    01-30-2025, 13:50 Go to last post

  14. Overheating ???

    Started by BOB-AUSTRALIA, 01-03-2025 22:49
    2 Pages •
    1 2
    • Replies: 21
    • Views: 8,286
    DmaxMaverick
    01-23-2025, 13:28 Go to last post

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