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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: High Miles contest!

    Started by More Power, 11-29-2005 07:23
    6 Pages
    1 2 3 ... 6
    • Replies: 103
    • Views: 105,907
    12-07-2021, 13:54 Go to last post
  2. Sticky Thread Sticky: Dexcool vs. other coolants

    Started by TomJ01, 12-01-2010 16:01
    • Replies: 14
    • Views: 74,818
    10-28-2020, 13:47 Go to last post
  3. 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: 39,531
    10-04-2020, 03:07 Go to last post
  4. Sticky Thread Sticky: Gasoline in my 6.6 Duramax

    Started by Javy, 06-01-2006 18:36
    2 Pages
    1 2
    • Replies: 32
    • Views: 78,122
    05-21-2020, 11:15 Go to last post
  5. 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: 112,917
    10-29-2018, 12:13 Go to last post
  6. 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
    • Replies: 223
    • Views: 295,313
    03-18-2018, 04:55 Go to last post
  7. Sticky Thread Sticky: 2001 LB7 fuel system/limp mode problem SOLVED

    Started by maverick2, 04-09-2010 12:46
    • Replies: 18
    • Views: 65,500
    10-23-2017, 07:57 Go to last post
  8. Sticky Thread Sticky: DTC Codes-Definitions

    Started by MAV, 09-27-2003 06:24
    • Replies: 7
    • Views: 44,575
    09-07-2017, 16:45 Go to last post
  9. Sticky Thread Sticky: LBZ Fuel Mileage

    Started by Dannyboy, 03-10-2006 15:46
    9 Pages
    1 2 3 ... 9
    • Replies: 166
    • Views: 163,916
    03-27-2017, 08:13 Go to last post
  10. Arrow Sticky Thread Sticky: LML Fuel Economy

    Started by cowboywildbill, 04-29-2011 06:46
    • Replies: 18
    • Views: 46,710
    07-13-2016, 07:27 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 14:35
    6 Pages
    1 2 3 ... 6
    • Replies: 113
    • Views: 184,792
    01-19-2016, 14:50 Go to last post
  12. 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: 123,119
    01-24-2013, 06:38 Go to last post
  13. Sticky Thread Sticky: Maximizing LLY fuel mileage

    Started by Stlheadake, 05-17-2006 11:32
    3 Pages
    1 2 3
    • Replies: 58
    • Views: 76,819
    11-29-2012, 16:34 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
    • Replies: 11
    • Views: 42,474
    03-23-2010, 10:03 Go to last post
  15. Thumbs up Sticky Thread Sticky: D Max Express Fuel Mileage

    Started by wurk_truk, 04-28-2006 21:40
    • Replies: 10
    • Views: 44,906
    06-21-2008, 16:16 Go to last post
    • Replies: 4
    • Views: 28,748
    01-03-2008, 19:45 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: 13,871
    08-03-2007, 07:58 Go to last post
  1. P0674 Glow plugs

    Started by a5150nut, 05-16-2022 17:18
    • Replies: 2
    • Views: 45
    05-17-2022, 10:09 Go to last post
  2. Scan Tools

    Started by johnanc, 08-12-2021 00:17
    • Replies: 2
    • Views: 375
    05-06-2022, 09:57 Go to last post
  3. 2017 l5p: P0204, p0300

    Started by chessy56, 03-16-2022 21:26
    • Replies: 8
    • Views: 310
    03-31-2022, 10:22 Go to last post
  4. I keep replacing this latch..

    Started by spongebob, 03-24-2022 17:35
    • Replies: 2
    • Views: 144
    03-29-2022, 14:53 Go to last post
  5. Surging

    Started by 51Hunter, 01-20-2022 11:20
    • Replies: 14
    • Views: 500
    03-22-2022, 15:10 Go to last post
  6. 2007 NBS 3500HD No start , no crank

    Started by chambie, 02-12-2022 07:33
    2 Pages
    1 2
    • Replies: 20
    • Views: 537
    03-01-2022, 10:08 Go to last post
    • Replies: 5
    • Views: 229
    02-10-2022, 14:54 Go to last post
  7. Headliner replacement

    Started by spongebob, 01-27-2022 14:28
    • Replies: 2
    • Views: 189
    01-28-2022, 09:29 Go to last post
  8. This LBZ a good deal or not?

    Started by 2INSANE, 01-06-2022 19:30
    • Replies: 7
    • Views: 378
    01-18-2022, 21:37 Go to last post
  9. Engine replacement thoughts

    Started by spongebob, 01-16-2022 12:59
    • Replies: 4
    • Views: 242
    01-18-2022, 11:15 Go to last post
    • Replies: 6
    • Views: 673
    11-02-2021, 15:59 Go to last post
  10. Activity

    Started by Inspector, 10-07-2021 16:56
    • Replies: 10
    • Views: 747
    10-25-2021, 16:35 Go to last post
  11. OPS change 06 Duramax

    Started by a5150nut, 10-17-2021 13:41
    • Replies: 5
    • Views: 473
    10-25-2021, 09:21 Go to last post
  12. Headliners......

    Started by spongebob, 09-12-2021 08:26
    • Replies: 2
    • Views: 417
    09-28-2021, 13:21 Go to last post
  13. Where’s the high side port on my A/c

    Started by spongebob, 09-11-2021 14:55
    • Replies: 1
    • Views: 280
    09-11-2021, 16:22 Go to last post
  14. 06 P0193 code only after 40 mins driving

    Started by Nrochwal306, 07-10-2021 20:53
    • Replies: 3
    • Views: 475
    08-02-2021, 12:57 Go to last post
  15. Fuel Filter Not Full When Changing

    Started by EdHale, 06-27-2021 04:10
    • Replies: 9
    • Views: 725
    07-14-2021, 13:22 Go to last post
  16. Post Duramax Head Gasket Replacement

    Started by More Power, 07-13-2021 12:12
    cooling system pressure, duramax, head gasket replacement
    • Replies: 0
    • Views: 328
    07-13-2021, 12:12 Go to last post
  17. Question: Old or New?

    Started by Vetman7, 05-11-2021 04:29
    • Replies: 2
    • Views: 501
    06-23-2021, 09:10 Go to last post
  18. CEL After Fuel Filter Change

    Started by Bipeflier, 06-22-2021 15:18
    • Replies: 3
    • Views: 422
    06-23-2021, 08:58 Go to last post

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