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Forum: Diagnostics & Troubleshooting

Powertrain | Performance | Electrical |

  1. Sticky Thread Sticky: Crankshaft System Variation Learn Procedure

    The CKP System Variation Learn procedure concerning the relationship of the Crankshaft Postion Sensor, or CKP, to the crankshaft reluctor was...

    Started by RedHeartbeat‎, 09-16-2007 01:31 PM
    3 Pages
    1 2 3
    • Replies: 24
    • Views: 14,602
    10-29-2009, 11:40 PM Go to last post
  2. Sticky Thread Sticky: Idle Learn Procedure

    The Idle Learn procedure may be required when: 1.) The PCM loses power or ground (battery or PCM disconnected) 2.) Service programming is performed...

    Started by RedHeartbeat‎, 09-16-2007 01:02 PM
    • Replies: 0
    • Views: 5,391
    09-16-2007, 01:02 PM Go to last post
  1. 02 gmc Yukon xl 5.3 whole lot of nonsense

    127xxx, runs great. Just got it 3 weeks ago. Took it straight to oriellys and ran codes, co265,po171 po300, po420,po442,po446,po174. I replaced power...

    Started by 02gmcyukonxl5.3‎, 08-29-2017 06:25 PM
    • Replies: 0
    • Views: 243
    08-29-2017, 06:25 PM Go to last post
  2. 02 gmc Yukon xl 5.3 whole lot of nonsense

    127xxx, runs great. Just got it 3 weeks ago. Took it straight to oriellys and ran codes, co265,po171 po300, po420,po442,po446,po174. I replaced power...

    Started by 02gmcyukonxl5.3‎, 08-29-2017 06:19 PM
    • Replies: 0
    • Views: 79
    08-29-2017, 06:19 PM Go to last post
  3. best way to flush crud out of cooling system???

    so I posted a thread a while back about having some overheating issues when towing my new to me boat and still have not resolved the issue. I still...

    Started by kewljay223‎, 08-16-2017 02:28 AM
    • Replies: 2
    • Views: 158
    08-25-2017, 06:02 PM Go to last post
  4. Check engine

    I have a 99 4,8 silverado that has a check engine light that I think was thrown when I installed long tube headers on the truck , I have no cats and...

    Started by Issav6‎, 08-22-2017 09:28 PM
    • Replies: 0
    • Views: 106
    08-22-2017, 09:28 PM Go to last post
  5. new guy w/ a question about an erod 6.2...

    fresh install crate LSA in a 94 chevy 1/2ton....the throttle quit working (drive by wire), wiring is good, any idea on how to decide whether it's ...

    Started by tomslik‎, 04-18-2017 05:08 PM
    • Replies: 0
    • Views: 749
    04-18-2017, 05:08 PM Go to last post
  6. Transmission codes and coolant switch problems

    I have a 95 c1500 with an 01 4.8 and 4l60e (both from same donor vehicle, trans is new but spec'd for donor truck. My first issue is coolant temp...

    Started by westofb‎, 04-10-2017 02:25 PM
    • Replies: 1
    • Views: 281
    04-11-2017, 09:28 PM Go to last post
  7. Ls obs ac signal??

    I've had my truck swapped with a h/c/i 5.3 for a while now and have driven it everywhere with no real issues....aside from these 2 and I've had...

    Started by Jmac527‎, 07-11-2016 12:13 AM
    • Replies: 3
    • Views: 1,003
    03-23-2017, 12:13 AM Go to last post
  8. 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: 501
    03-06-2017, 08:00 PM Go to last post
  9. 01 silverado 4.8 engine has miss

    I just bought a nice 01` shortbed with 200k seems to run ok but has a shake in engine po300 code and po308 put new plugs and wires ,switched coil...

    Started by oldman‎, 12-12-2016 06:30 PM
    • Replies: 3
    • Views: 1,017
    12-25-2016, 08:00 PM Go to last post
  10. 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: 801
    11-20-2016, 01:34 AM Go to last post
  11. 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: 466
    11-20-2016, 01:18 AM Go to last post
  12. 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: 1,701
    10-28-2016, 11:55 PM Go to last post
  13. 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: 193
    10-23-2016, 07:54 PM Go to last post
  14. 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: 2,377
    09-23-2016, 07:56 AM Go to last post
  15. 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: 1,402
    05-07-2016, 11:59 AM Go to last post
  16. 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: 495
    04-26-2016, 11:59 AM Go to last post
  17. 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: 545
    01-30-2016, 12:33 PM Go to last post
  18. 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: 4,245
    01-21-2016, 04:36 PM Go to last post
  19. 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: 815
    01-05-2016, 01:05 PM Go to last post
  20. 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: 1,031
    12-12-2015, 11:50 AM Go to last post

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