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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: 107
    • Views: 142,101
    02-29-2024, 13:38 Go to last post
  2. Sticky Thread Sticky: LBZ Fuel Mileage

    Started by Dannyboy, 03-10-2006 15:46
    9 Pages
    1 2 3 ... 9
    • Replies: 168
    • Views: 209,557
    12-30-2023, 15:22 Go to last post
    • Replies: 5
    • Views: 34,044
    06-03-2022, 09:59 Go to last post
  3. Sticky Thread Sticky: Dexcool vs. other coolants

    Started by TomJ01, 12-01-2010 16:01
    • Replies: 13
    • Views: 85,524
    10-28-2020, 13:47 Go to last post
  4. 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: 49,680
    10-04-2020, 03:07 Go to last post
  5. Sticky Thread Sticky: Gasoline in my 6.6 Duramax

    Started by Javy, 06-01-2006 18:36
    2 Pages
    1 2
    • Replies: 32
    • Views: 93,980
    05-21-2020, 11:15 Go to last post
  6. 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: 145,054
    10-29-2018, 12:13 Go to last post
  7. 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: 347,444
    03-18-2018, 04:55 Go to last post
  8. Sticky Thread Sticky: 2001 LB7 fuel system/limp mode problem SOLVED

    Started by maverick2, 04-09-2010 12:46
    • Replies: 18
    • Views: 78,368
    10-23-2017, 07:57 Go to last post
  9. Sticky Thread Sticky: DTC Codes-Definitions

    Started by MAV, 09-27-2003 06:24
    • Replies: 7
    • Views: 50,615
    09-07-2017, 16:45 Go to last post
  10. Arrow Sticky Thread Sticky: LML Fuel Economy

    Started by cowboywildbill, 04-29-2011 06:46
    • Replies: 18
    • Views: 55,643
    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: 216,963
    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: 158,308
    01-24-2013, 06:38 Go to last post
  13. Sticky Thread Sticky: New to Forum: How to tell type of Engine

    Started by bradjedis, 06-18-2007 10:41
    • Replies: 11
    • Views: 47,929
    03-23-2010, 10:03 Go to last post
  14. Thumbs up Sticky Thread Sticky: D Max Express Fuel Mileage

    Started by wurk_truk, 04-28-2006 21:40
    • Replies: 10
    • Views: 50,907
    06-21-2008, 16:16 Go to last post
  15. Sticky Thread Sticky: Postings in the 'Duramax 6600' forum

    Started by Mark Rinker, 08-03-2007 07:58
    • Replies: 0
    • Views: 16,521
    08-03-2007, 07:58 Go to last post
    • Replies: 3
    • Views: 207
    07-14-2024, 14:29 Go to last post
  1. P003A code

    Started by spongebob, 06-12-2024 13:27
    • Replies: 9
    • Views: 1,623
    06-22-2024, 09:49 Go to last post
  2. turbo experts.....

    Started by spongebob, 06-13-2024 10:30
    • Replies: 2
    • Views: 801
    06-22-2024, 07:29 Go to last post
  3. battery boils over, on one side?

    Started by delspeed, 12-03-2007 19:50
    • Replies: 14
    • Views: 9,777
    06-09-2024, 16:16 Go to last post
  4. Arrow 750K Mile Duramax

    Started by More Power, 03-22-2010 10:37
    • Replies: 13
    • Views: 137,240
    05-23-2024, 12:27 Go to last post
  5. Wow..after replacing my T-stats..

    Started by spongebob, 04-30-2024 13:45
    • Replies: 6
    • Views: 1,751
    05-21-2024, 12:51 Go to last post
  6. Wink Duramax Head Gasket Replacement

    Started by More Power, 05-31-2021 06:10
    7 Pages
    1 2 3 ... 7
    duramax, head gasket replacement
    • Replies: 136
    • Views: 28,880
    05-17-2024, 20:04 Go to last post
  7. heater hose going back on...

    Started by spongebob, 04-28-2024 06:39
    • Replies: 6
    • Views: 1,709
    04-29-2024, 08:34 Go to last post
  8. How does this hose come off?

    Started by spongebob, 04-22-2024 12:02
    • Replies: 2
    • Views: 1,406
    04-23-2024, 09:00 Go to last post
  9. LB7 Coolant in the Oil HELP!

    Started by dgalvin66, 12-30-2023 11:58
    • Replies: 7
    • Views: 3,303
    04-14-2024, 17:45 Go to last post
  10. Someone tell me why

    Started by spongebob, 03-25-2024 12:04
    • Replies: 5
    • Views: 3,007
    04-03-2024, 10:20 Go to last post
  11. I was sniveling about..

    Started by spongebob, 03-20-2024 15:14
    • Replies: 5
    • Views: 1,889
    03-22-2024, 11:06 Go to last post
  12. Oil Pressure issue?

    Started by steven h, 03-11-2024 17:25
    • Replies: 3
    • Views: 1,916
    03-12-2024, 21:17 Go to last post
  13. Red face Head gasket replacement and beyond,,

    Started by spongebob, 12-25-2023 08:52
    • Replies: 15
    • Views: 2,914
    02-13-2024, 13:53 Go to last post
  14. Peak orange anti-freeze

    Started by spongebob, 01-29-2024 08:57
    • Replies: 0
    • Views: 1,419
    01-29-2024, 08:57 Go to last post
  15. rebuilt or new injectors..

    Started by spongebob, 12-27-2023 11:57
    • Replies: 5
    • Views: 2,212
    01-18-2024, 12:42 Go to last post
  16. can I pull the T-stats and run the engine?

    Started by spongebob, 01-09-2024 12:02
    • Replies: 1
    • Views: 1,202
    01-18-2024, 12:19 Go to last post
  17. Cold Weather Operation

    Started by More Power, 01-18-2024 12:10
    cold weather, diesel fuel gelling
    • Replies: 0
    • Views: 1,351
    01-18-2024, 12:10 Go to last post
  18. My cost to replace my 6.6

    Started by spongebob, 12-28-2023 13:33
    • Replies: 17
    • Views: 4,519
    01-10-2024, 13:07 Go to last post
  19. Fuel injectors and pump horror stories….

    Started by spongebob, 01-05-2024 10:11
    • Replies: 4
    • Views: 1,967
    01-06-2024, 14:24 Go to last post

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