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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. Sticky Thread Sticky: Dexcool vs. other coolants

    Started by TomJ01, 12-01-2010 04:01 PM
    • Replies: 14
    • Views: 71,310
    10-28-2020, 01:47 PM Go to last post
  2. Sticky Thread Sticky: Additional fuel filtration / injector replacement poll

    Started by Mark Rinker, 08-16-2008 09:10 AM
    2 Pages
    1 2
    • Replies: 29
    • Views: 37,137
    10-04-2020, 03:07 AM Go to last post
  3. Sticky Thread Sticky: Gasoline in my 6.6 Duramax

    Started by Javy, 06-01-2006 06:36 PM
    2 Pages
    1 2
    • Replies: 32
    • Views: 73,794
    05-21-2020, 11:15 AM Go to last post
  4. Poll Sticky Thread Sticky: Poll: 2004.5+ LLY Duramax Fuel Economy Poll

    Started by More Power, 12-31-2004 02:27 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 117
    • Views: 105,734
    10-29-2018, 12:13 PM Go to last post
  5. Sticky Thread Sticky: P0087 fuel rail pressure low limp under high loads

    Started by Mark Rinker, 08-14-2009 08:26 PM
    12 Pages
    1 2 3 ... 12
    • Replies: 223
    • Views: 276,789
    03-18-2018, 04:55 AM Go to last post
  6. Sticky Thread Sticky: High Miles contest!

    Started by More Power, 11-29-2005 07:23 AM
    6 Pages
    1 2 3 ... 6
    • Replies: 102
    • Views: 99,577
    10-23-2017, 11:59 AM Go to last post
  7. Sticky Thread Sticky: 2001 LB7 fuel system/limp mode problem SOLVED

    Started by maverick2, 04-09-2010 12:46 PM
    • Replies: 18
    • Views: 61,846
    10-23-2017, 07:57 AM Go to last post
  8. Sticky Thread Sticky: DTC Codes-Definitions

    Started by MAV, 09-27-2003 06:24 AM
    • Replies: 7
    • Views: 43,399
    09-07-2017, 04:45 PM Go to last post
  9. Sticky Thread Sticky: LBZ Fuel Mileage

    Started by Dannyboy, 03-10-2006 03:46 PM
    9 Pages
    1 2 3 ... 9
    • Replies: 166
    • Views: 154,032
    03-27-2017, 08:13 AM Go to last post
  10. Arrow Sticky Thread Sticky: LML Fuel Economy

    Started by cowboywildbill, 04-29-2011 06:46 AM
    • Replies: 18
    • Views: 44,891
    07-13-2016, 07:27 AM Go to last post
  11. Poll Sticky Thread Sticky: Poll: 2001-early 2004 LB7 Duramax Fuel Economy Poll

    Started by More Power, 12-31-2004 02:35 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 113
    • Views: 175,902
    01-19-2016, 02:50 PM Go to last post
  12. Arrow Sticky Thread Sticky: LMM Fuel Economy

    Started by More Power, 04-11-2007 10:20 PM
    5 Pages
    1 2 3 ... 5
    • Replies: 98
    • Views: 117,396
    01-24-2013, 06:38 AM Go to last post
  13. Sticky Thread Sticky: Maximizing LLY fuel mileage

    Started by Stlheadake, 05-17-2006 11:32 AM
    3 Pages
    1 2 3
    • Replies: 58
    • Views: 72,063
    11-29-2012, 04:34 PM Go to last post
  14. Sticky Thread Sticky: New to Forum: How to tell type of Engine

    Started by bradjedis, 06-18-2007 10:41 AM
    • Replies: 11
    • Views: 41,368
    03-23-2010, 10:03 AM Go to last post
  15. Thumbs up Sticky Thread Sticky: D Max Express Fuel Mileage

    Started by wurk_truk, 04-28-2006 09:40 PM
    • Replies: 10
    • Views: 43,388
    06-21-2008, 04:16 PM Go to last post
    • Replies: 4
    • Views: 27,725
    01-03-2008, 07:45 PM Go to last post
  16. Sticky Thread Sticky: Postings in the 'Duramax 6600' forum

    Started by Mark Rinker, 08-03-2007 07:58 AM
    • Replies: 0
    • Views: 13,431
    08-03-2007, 07:58 AM Go to last post
  1. Helpppp!!!

    Started by Jasonooooo, 11-18-2020 11:19 PM
    • Replies: 8
    • Views: 109
    11-20-2020, 02:10 PM Go to last post
  2. Angry LEAKING Air Con Condenser

    Started by Dek Hawkins, 09-24-2020 01:45 PM
    • Replies: 8
    • Views: 164
    11-13-2020, 01:26 PM Go to last post
  3. Cooling fluid ??

    Started by spongebob, 10-24-2020 03:53 PM
    • Replies: 4
    • Views: 81
    10-29-2020, 08:10 AM Go to last post
  4. Using a cleaner in the oil...

    Started by spongebob, 10-10-2020 04:32 PM
    • Replies: 5
    • Views: 108
    10-29-2020, 08:01 AM Go to last post
  5. EGR removal pro’s/con’s

    Started by spongebob, 10-26-2020 10:45 AM
    • Replies: 2
    • Views: 40
    10-26-2020, 12:07 PM Go to last post
  6. P0402 code

    Started by spongebob, 10-24-2020 11:29 AM
    • Replies: 5
    • Views: 60
    10-26-2020, 10:46 AM Go to last post
  7. DEF Life

    Started by richp, 10-24-2020 10:25 AM
    • Replies: 8
    • Views: 69
    10-25-2020, 04:03 AM Go to last post
  8. SES and P0106, P0402

    Started by Mark Rinker, 02-14-2009 08:22 AM
    • Replies: 15
    • Views: 6,651
    10-24-2020, 11:27 AM Go to last post
  9. Unhappy Yet another injector question...

    Started by Vetman7, 04-29-2019 07:40 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 2,634
    10-21-2020, 09:54 AM Go to last post
  10. emissions ready monitors, 2017 L5P

    Started by chessy56, 10-06-2020 11:17 AM
    • Replies: 9
    • Views: 147
    10-20-2020, 06:38 AM Go to last post
  11. What does this do ?

    Started by spongebob, 10-16-2020 03:47 PM
    • Replies: 2
    • Views: 66
    10-16-2020, 06:59 PM Go to last post
  12. 07 6.6 duramax starts and dies out

    Started by 300win, 10-13-2020 12:19 PM
    • Replies: 1
    • Views: 67
    10-16-2020, 01:00 PM Go to last post
  13. Exclamation 06 6.6 Duramax rough idle/shaking

    Started by ajh7, 09-15-2020 12:34 PM
    duramax, fuel knock, rough idle
    • Replies: 1
    • Views: 98
    10-09-2020, 12:37 PM Go to last post
  14. Question HELP desperate for Diagram

    Started by dieseldoctor886413, 10-05-2020 07:39 AM
    • Replies: 1
    • Views: 48
    10-05-2020, 02:20 PM Go to last post
  15. P106c ?

    Started by a5150nut, 08-22-2020 10:30 AM
    • Replies: 12
    • Views: 234
    09-16-2020, 04:58 AM Go to last post
  16. It Quit....

    Started by EdHale, 09-13-2020 03:18 AM
    • Replies: 0
    • Views: 85
    09-13-2020, 03:18 AM Go to last post
  17. 03 LB7 with some issues

    Started by jkjk, 07-15-2020 02:30 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 545
    09-10-2020, 08:05 PM Go to last post
  18. Fuel filter life

    Started by spongebob, 08-31-2020 11:28 AM
    • Replies: 4
    • Views: 160
    09-02-2020, 07:17 AM Go to last post
  19. EGR on Ca 2003 LB7?

    Started by siggy, 09-17-2007 07:24 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 17,052
    08-16-2020, 10:44 PM Go to last post
  20. On truck injector cleaning...

    Started by spongebob, 06-27-2020 10:20 AM
    • Replies: 16
    • Views: 546
    08-03-2020, 12:53 PM Go to last post

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