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Forum: 6.5L Turbo Diesel - Tech Support - Troubleshooting - Performance

1992-00 6.5L Turbo Diesel - Welcome to the Internet's first discussion forum for the 6.5L diesel engine. Tips on performance, upgrades, cooling, fuel economy, troubleshooting and more.

  1. Sticky Thread Sticky: How much do you like your 6.5

    Started by Robyn, 08-05-2007 22:02
    5 Pages
    1 2 3 ... 5
    • Replies: 92
    • Views: 40,678
    06-16-2020, 08:41 Go to last post
  2. Sticky Thread Sticky: The GM 6.5L Diesel

    Started by More Power, 04-15-2019 12:31
    • Replies: 1
    • Views: 1,925
    04-15-2019, 15:38 Go to last post
  3. Sticky Thread Sticky: New Members, Read this First

    Started by Cowracer, 02-28-2006 11:01
    • Replies: 0
    • Views: 13,884
    02-28-2006, 11:01 Go to last post
  4. Sticky Thread Sticky: Forum guidelines regarding commercial ventures

    Started by JohnC, 02-13-2006 11:25
    • Replies: 0
    • Views: 9,215
    02-13-2006, 11:25 Go to last post
  1. 6.5 TD Refresher+Mods

    Started by 2INSANE, 12-17-2020 15:06
    • Replies: 11
    • Views: 266
    Today, 07:03 Go to last post
  2. New Starter?

    Started by victor50, 01-16-2021 17:02
    • Replies: 6
    • Views: 91
    01-21-2021, 06:59 Go to last post
  3. I bought an Optimizer NAVSTAR

    Started by 2INSANE, 01-16-2021 11:20
    • Replies: 2
    • Views: 52
    01-16-2021, 15:28 Go to last post
  4. Another 506 bites the dust

    Started by 2INSANE, 01-13-2021 11:13
    • Replies: 7
    • Views: 103
    01-14-2021, 05:28 Go to last post
  5. Cool Its winter again Thermostats,

    Started by phantom309, 01-09-2021 05:30
    • Replies: 2
    • Views: 68
    01-10-2021, 14:57 Go to last post
  6. 1998 gmc3500hd duel fuel tank

    Started by Bradley995, 01-06-2021 18:02
    • Replies: 4
    • Views: 65
    01-07-2021, 20:24 Go to last post
  7. 96 GMC Sierra 6.5 turbo diesel

    Started by Missmiddle, 01-06-2021 03:57
    • Replies: 2
    • Views: 61
    01-07-2021, 08:35 Go to last post
  8. Weird 6.5 4 bolt coolant crossover? Wtf?

    Started by 2INSANE, 01-05-2021 18:58
    • Replies: 2
    • Views: 64
    01-06-2021, 15:41 Go to last post
  9. Timing set replacement questions

    Started by walbright, 12-23-2020 15:56
    • Replies: 6
    • Views: 109
    01-04-2021, 09:49 Go to last post
  10. Why are 6.5 quieter then 6.2?

    Started by 2INSANE, 12-13-2020 10:10
    • Replies: 4
    • Views: 156
    12-15-2020, 11:40 Go to last post
  11. 6.2 IP on 6.5?

    Started by 2INSANE, 12-13-2020 10:06
    • Replies: 0
    • Views: 60
    12-13-2020, 10:06 Go to last post
  12. Clear codes with fuses?

    Started by GMC John, 11-23-2020 20:58
    • Replies: 1
    • Views: 81
    12-01-2020, 15:14 Go to last post
    • Replies: 3
    • Views: 131
    11-17-2020, 08:14 Go to last post
  13. Might be PMD but seems like it isn't

    Started by GMC John, 11-15-2020 19:14
    • Replies: 2
    • Views: 108
    11-17-2020, 06:23 Go to last post
    • Replies: 8
    • Views: 96
    11-15-2020, 11:31 Go to last post
  14. Best engine options

    Started by Dvldog8793, 11-04-2020 03:44
    • Replies: 8
    • Views: 209
    11-10-2020, 14:50 Go to last post
    • Replies: 10
    • Views: 263
    11-08-2020, 22:47 Go to last post
  15. 6.5 Alternator question

    Started by 2INSANE, 11-07-2020 05:50
    • Replies: 5
    • Views: 98
    11-07-2020, 20:16 Go to last post
  16. 6.5 turbo oil drain question

    Started by 2INSANE, 11-03-2020 08:06
    • Replies: 3
    • Views: 82
    11-03-2020, 18:43 Go to last post
  17. Seriously disappointed

    Started by crazylouie, 10-22-2020 04:34
    • Replies: 13
    • Views: 281
    11-02-2020, 08:53 Go to last post

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