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Forum: Diagnostics & Troubleshooting

Powertrain | Performance | Electrical |

  1. 5.3 oil pan cracks

    I am in the process of removing the sludge from my 5.3 2004 Tahoe. My castech heads went bad around 130K. I pulled my oil pan and noticed there are...

    Started by Gooman‎, 03-06-2017 08:00 PM
    • Replies: 0
    • Views: 2,084
    03-06-2017, 08:00 PM Go to last post
  2. 2wd to awd coversion

    I have a 02 Denali for donor awd 6.0 of course I want my 05 rcsb 4.3/5spd to be converted to awd 6.0 auto. Has anyone here done this. I...

    Started by FastSierra05‎, 08-14-2016 02:43 PM
    • Replies: 3
    • Views: 3,618
    11-20-2016, 01:34 AM Go to last post
  3. 2003 chevy silve. 6.0l engine with gt2-3 cam and zo6 comp springs slit bumb in idle.

    He guys so I had a 2003 denali 6.0 lq4 complete remand done with a few modes. first valve job with zo6 beehive comp valve springs and push rods, gmpp...

    Started by jaysonolson‎, 10-24-2016 03:20 AM
    hesitation, motor bumping, smell of fuel
    • Replies: 1
    • Views: 3,220
    11-20-2016, 01:18 AM Go to last post
  4. Post Perhaps Too Much Fuel Pressure?

    I still have, for the most part, a stock 5.3 from a 2008 Tahoe in my 88 K5 Blazer, so we're talking 330 to 350hp at most. I do have some JBA headers...

    Started by 88blazerboy‎, 01-09-2016 11:02 AM
    2 Pages
    1 2
    • Replies: 10
    • Views: 5,072
    10-28-2016, 11:55 PM Go to last post
  5. O4 5.3 in 99 silverado 3500. Engine runs now need help with gauges.

    Truck is a 99 "classic" body style 3500 with 5 speed manual.4x4. I need help getting the speedo, coolant temp, and oil pressure to work. Any help is...

    Started by Jfish‎, 10-23-2016 07:54 PM
    • Replies: 0
    • Views: 1,269
    10-23-2016, 07:54 PM Go to last post
  6. O2 sensors...UGHHHHHHH

    I'll make this brief. Did LS 4.8 swap, engine, trans, harness and all as unit from donor vehicle Into my 91 Silverado. Replaced harness with a unit...

    Started by L8RH8R‎, 04-21-2016 06:01 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 8,253
    09-23-2016, 07:56 AM Go to last post
  7. Engine Tick

    After 1200 miles on my lq9 swap my engine developed a metallic tick. The sound only becomes noticeable around 190-200 degrees. My thoughts were a bad...

    Started by Gemini‎, 02-16-2016 06:47 PM
    • Replies: 7
    • Views: 4,070
    05-07-2016, 11:59 AM Go to last post
  8. No Brakes

    So I have got my 4.8L Ls swap running in my 1996 C1500. I removed the old PCM for the 4.3v6. I am wondering if I am missing something to get my...

    Started by Safariwagon‎, 04-20-2016 05:14 AM
    • Replies: 3
    • Views: 2,283
    04-26-2016, 11:59 AM Go to last post
  9. 07 gmt900 wiring diagrams?

    So been a while since i have posted, projects went away and life happened. Anyway, i'm experiencing problems with my 07 gmt900's transmission where...

    Started by 60ratrod‎, 01-30-2016 12:33 PM
    • Replies: 0
    • Views: 1,593
    01-30-2016, 12:33 PM Go to last post
  10. possible 4l80e problems after HD-2 shift kit install

    Installed the transgo shift kit in my 4l80e and I'm not sure if its working right. I have done shift kits before and they would shift firm and hard....

    Started by JoshB‎, 10-02-2010 07:27 PM
    • Replies: 5
    • Views: 7,528
    01-21-2016, 04:36 PM Go to last post
  11. Unhappy MAF Sensor question (I know it's not exciting)

    I swapped an 02 4.8 and 4l60e trans into my 91. After pulling my hair out over other issues, the truck still runs rich and is a slug from a dead...

    Started by L8RH8R‎, 01-04-2016 09:33 AM
    • Replies: 3
    • Views: 2,466
    01-05-2016, 01:05 PM Go to last post
  12. Engine dies on deceleration after warm up

    I have a 5.3 that I swapped into my obs I put an ls6 intake on the engine and swapped the cam. I did have the ecm tuned for the cam. (mail order) ...

    Started by slicpartna‎, 12-01-2015 07:29 PM
    • Replies: 3
    • Views: 2,985
    12-12-2015, 11:50 AM Go to last post
  13. Possible fuel issue?

    I will try to be as brief as possible. 91 Silverado with 02 4.8 swap. After first several attempts to start, engine ran (each time I tried to crank...

    Started by L8RH8R‎, 10-05-2015 09:49 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 5,755
    11-26-2015, 03:37 PM Go to last post
  14. ECM question

    Hey guys it's been awhile since I've posted anything. I recently picked up a 2001 1500HD with the 6.0. The motor was bad but guy had bought another...

    Started by Esky02‎, 11-17-2015 06:57 PM
    • Replies: 2
    • Views: 2,159
    11-18-2015, 01:32 PM Go to last post
  15. 6.0 swap ecm code U0100 need help I'm new here

    I did a 6.0 swap engine runs fine no check engine light but when you hook the truck up it has a u0100 code stored could this be a tuning issue.

    Started by AB076.oh‎, 09-03-2015 11:46 AM
    • Replies: 2
    • Views: 2,412
    09-03-2015, 01:41 PM Go to last post
  16. For the a/c gurus

    So attached is a 94 a/c circuit wiring diagram. The only portions i am worried about is the compressor circuit. So the blue dashed wire (may not be...

    Started by creekrat‎, 08-16-2015 01:44 AM
    • Replies: 1
    • Views: 2,552
    08-16-2015, 09:28 AM Go to last post
  17. Thermostat retune?

    I had a 160 Stat that was getting stuck open so I put a stock one back in. Had it tuned for the 160. Will I need to get a retune for fan speed or...

    Started by SShanks‎, 08-12-2015 01:42 AM
    • Replies: 0
    • Views: 1,369
    08-12-2015, 01:42 AM Go to last post
  18. O2 Sensor Not Switching, Need Help

    OK, truck is a 96 S10 with a 408/T56 swap, using a custom harness made specific for the truck by Current Performance in FL. Tune and PCM are from...

    Started by FirstGensForever‎, 03-20-2013 05:51 PM
    • Replies: 3
    • Views: 3,416
    07-22-2015, 10:12 PM Go to last post
  19. bad surging problem

    I need help guys. I have 04 Silverado 5.3, bbk 80mm tb, underdrive pulleys, gm lsa cam 226/236 525/525 110lsa, 8.5 msd wires, tr6 plugs, 1 3/4 long...

    Started by silveradorider04‎, 05-14-2015 09:46 PM
    • Replies: 9
    • Views: 4,209
    07-20-2015, 12:45 PM Go to last post
  20. p0300 & maybe the transmission

    So I'm trying to diagnose a problem with my truck and I'm running out of ideas... there may be a couple problems. I'm hoping you guys can help. I...

    Started by Axis‎, 06-23-2015 02:20 PM
    • Replies: 2
    • Views: 1,844
    06-23-2015, 09:11 PM Go to last post

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