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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: 27,354
    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: 8,835
    09-16-2007, 01:02 PM Go to last post
  1. Help!!backfire problem

    engine light was on ,started noticing my truck when i first get on the gas it backfires through the cold air intake real loud kind of embarrasing...

    Started by CHEVROLADE‎, 06-28-2011 10:37 PM
    11 Pages
    1 2 3 ... 11
    • Replies: 100
    • Views: 10,344
    05-27-2022, 03:52 AM Go to last post
  2. 4L80 swap problems

    I repowered my 2005 suburban with a built up 6.0L and installed a 4L80e. Reused the harness an Neutral Switch as well. Once everything installed I...

    Started by Canadiancalguy007‎, 02-25-2022 08:04 PM
    • Replies: 1
    • Views: 1,789
    02-25-2022, 08:06 PM Go to last post
  3. o2 sensors? LS swap

    I am swapping (first time) my 1993 OBS 2WD to a 2001 GMC 6.0 ls with 4l80e. Just wondering what O2 sensors I need to buy for my long tube headers...

    Started by ClintOBS93‎, 12-11-2021 04:04 PM
    wiring harness
    • Replies: 5
    • Views: 2,230
    12-14-2021, 01:49 AM Go to last post
  4. tapping noise

    Ok 2018 Tahoe 5.3 When you accelerate there is an intermittent tapping noise coming from the driver side (engine bay??). The dealer replaced the...

    Started by Fastshivy‎, 09-23-2021 10:34 AM
    38 Pages
    1 2 3 ... 38
    • Replies: 372
    • Views: 6,200
    11-30-2021, 02:49 PM Go to last post
  5. hm đổi số thnh chữ trong excel không cần ci đặt phức tạp

    Hm đổi số thnh chữ trong excel không cần ci đặt phức tạp Mình có sưu tầm v chỉnh sa thnh 1 form excel có sẵn...

    Started by CHPSONGHONG‎, 09-01-2021 02:38 PM
    • Replies: 0
    • Views: 2,057
    09-01-2021, 02:38 PM Go to last post
  6. Các công việc kế toán phải lm với Doanh nghiệp mới thnh lp CHP

    Công ty mới mới thnh lp năm 2021 cần chú ý các thủ tục kê khai thuế với Cơ quan thuế quản lý v các cơ quan khác có...

    Started by CHPSONGHONG‎, 08-18-2021 07:21 AM
    • Replies: 0
    • Views: 2,465
    08-18-2021, 07:21 AM Go to last post
  7. Công việc kế toán phải lm với Doanh nghiệp mới thnh lp CHP

    Doanh nghiệp mới mới thnh lp năm 2021 cần chú ý các thủ tục kê khai thuế với Cơ quan thuế quản lý v các cơ quan...

    Started by CHPSONGHONG‎, 08-08-2021 12:58 PM
    • Replies: 0
    • Views: 1,759
    08-08-2021, 12:58 PM Go to last post
  8. LQ4/9 misfire #1 after rebuild

    Hey guys been away a long time. We got finished rebuilding the LQ4 in my sons 99 Silvy 2500. when I say rebuild, it was a FULL rebuild including...

    Started by Haulinbass07‎, 02-23-2021 07:52 PM
    26 Pages
    1 2 3 ... 26
    • Replies: 255
    • Views: 34,811
    07-01-2021, 09:29 PM Go to last post
  9. 08 crew cab 6.2 problem

    I have an 08 silverado the dod ate a lifter so I decided to swap out the 5,3 for a lo mile 6.2 with a small btr cam .The truck ran for a few days...

    Started by oldman‎, 01-14-2021 01:17 PM
    • Replies: 0
    • Views: 2,674
    01-14-2021, 01:17 PM Go to last post
  10. LM7 with LQ9 cam, P0300 CEL

    I have been trying to track down a "Multiple Random Misfires" code P0300 since I got my truck a month ago, ignition is all new(does have upgraded...

    Started by GreenTruckGuy‎, 04-21-2020 10:45 PM
    • Replies: 0
    • Views: 4,447
    04-21-2020, 10:45 PM Go to last post
  11. Fuel Pressure Too High at Idle

    Yes, I've searched and couldn't find a suitable thread, so here goes: My fuel pressure is reading 72 psi at idle and I need to know how to get it...

    Started by 2K_Silverado‎, 04-08-2020 09:09 AM
    • Replies: 0
    • Views: 2,992
    04-08-2020, 09:09 AM Go to last post
  12. steam line

    can the steam line on 5.3 hook up to over flow on radiator

    Started by bigron111‎, 03-01-2020 04:41 PM
    • Replies: 0
    • Views: 3,165
    03-01-2020, 04:41 PM Go to last post
  13. 93 obs ls swap engine keeps running after key is switched off

    Im helping a friend with an ls swap in a 93 truck. The engine will fire up and run fairly well but when you switch the key off the engine keeps...

    Started by ALLSHOW67‎, 01-30-2020 12:59 PM
    • Replies: 0
    • Views: 2,714
    01-30-2020, 12:59 PM Go to last post
  14. Cool Help clarify how the oil heads into the rocker arms...

    Hi all! New to the forum! I think this is the right spot to post a question regarding my 2015 Sierra 6.0 vortec? I have the L96 engine with VVT...

    Started by XinnKoda‎, 01-20-2020 06:30 PM
    • Replies: 0
    • Views: 3,222
    01-20-2020, 06:30 PM Go to last post
  15. 2000 Silverado 5.3L fuel pressure still low after new pump and more...

    2000 Silverado 5.3L 2WD 1500 RCSB w/ ~165Kmi - all stock Fuel pressure still just under spec after new pump and more... I replaced the fuel pump...

    Started by 2Kchevy‎, 12-09-2019 05:14 PM
    • Replies: 0
    • Views: 3,601
    12-09-2019, 05:14 PM Go to last post
  16. MAF/IAT Sensor signal voltage too high??

    Finally got my 4.8l Vortec conversion to start - but it will absolutely not idle and dies unless I keep foot on the throttle. Getting a strange IAT...

    Started by acerman‎, 12-02-2019 09:10 PM
    4.8l, maf. iat
    • Replies: 0
    • Views: 3,429
    12-02-2019, 09:10 PM Go to last post
  17. 05 Silverado throwing codes with loss of power

    My 05 Silverado is throwing codes P0120, U0107, P0220, P0446, P1516 Have replaced throttle position sensor and wiring harness. Ran good for a few...

    Started by Jayce1965‎, 11-17-2019 10:05 AM
    • Replies: 0
    • Views: 2,635
    11-17-2019, 10:05 AM Go to last post
  18. no start - PCM problem?"

    I purchased a '93 C1500 with a '00 4.8L Vortec conversion earlier this year. Put about 5000 miles on it and it died in the driveway last week. ...

    Started by acerman‎, 11-04-2019 11:33 AM
    4.8l, ecm, no start, pcm
    • Replies: 1
    • Views: 3,940
    11-05-2019, 03:33 PM Go to last post
  19. Spark Knock Issue

    I need some input on a spark knock issue under light acceleration for my 2003 4.8, manual trans silverado. Went to 89 octane. Changed PCV, plugs,...

    Started by bdeboyes@ec.rr.com‎, 02-09-2019 12:36 PM
    • Replies: 3
    • Views: 4,191
    10-06-2019, 07:04 PM Go to last post
  20. No start no crank pcm no 12v reference

    so let me start out with what i have so my truck was already swapped with a lq4 and 4l60 so im in the process of swapping this 416ci and 4l80 combo...

    Started by Sierra416‎, 02-28-2019 03:18 PM
    • Replies: 1
    • Views: 3,925
    08-29-2019, 12:22 PM Go to last post

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