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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 02:31 PM
    3 Pages
    1 2 3
    • Replies: 24
    • Views: 31,977
    10-30-2009, 12:40 AM 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 02:02 PM
    • Replies: 0
    • Views: 9,397
    09-16-2007, 02:02 PM Go to last post
  1. 2001 Silverado Map sensor not available on new intake manifolds

    I have a 01 Silverado with the 4.8l V8 and a 5 speed manual transmission. Ever since I got her she does a strange thing where if I shift into neutral...

    Started by topfuel67‎, 11-27-2023 07:32 PM
    • Replies: 0
    • Views: 14
    11-27-2023, 07:32 PM Go to last post
  2. 2001 Tahoe 5.3

    Just got this Tahoe for the engine. The security light is flashing and will not crank. It has fuel and spark. I have good grounds on the ones I...

    Started by Driggers1‎, 06-13-2023 08:58 PM
    • Replies: 0
    • Views: 686
    06-13-2023, 08:58 PM Go to last post
  3. Very slight stumble at idling

    So my truck has a very slight (I would describe it as a misfire) but it is was less dramatic than this stumble. I tried replacing my factory spider...

    Started by Gcupp‎, 02-11-2023 04:45 PM
    • Replies: 0
    • Views: 273
    02-11-2023, 04:45 PM Go to last post
  4. Random skip

    2004 Yukon xl 2wd vin z Okay guys I am stumped on a skip I have it started a few weeks ago. Skip started out mild and now so random. Its...

    Started by bstevanus91‎, 08-31-2022 06:12 PM
    • Replies: 0
    • Views: 845
    08-31-2022, 06:12 PM Go to last post
  5. 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 11:37 PM
    11 Pages
    1 2 3 ... 11
    • Replies: 100
    • Views: 13,357
    05-27-2022, 04:52 AM Go to last post
  6. 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 09:04 PM
    • Replies: 1
    • Views: 2,291
    02-25-2022, 09:06 PM Go to last post
  7. 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 05:04 PM
    wiring harness
    • Replies: 5
    • Views: 3,010
    12-14-2021, 02:49 AM Go to last post
  8. 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 11:34 AM
    38 Pages
    1 2 3 ... 38
    • Replies: 372
    • Views: 9,289
    11-30-2021, 03:49 PM Go to last post
  9. 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 03:38 PM
    • Replies: 0
    • Views: 2,537
    09-01-2021, 03:38 PM Go to last post
  10. 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 08:21 AM
    • Replies: 0
    • Views: 2,917
    08-18-2021, 08:21 AM Go to last post
  11. 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 01:58 PM
    • Replies: 0
    • Views: 2,178
    08-08-2021, 01:58 PM Go to last post
  12. 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 08:52 PM
    26 Pages
    1 2 3 ... 26
    • Replies: 255
    • Views: 51,661
    07-01-2021, 10:29 PM Go to last post
  13. 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 02:17 PM
    • Replies: 0
    • Views: 3,162
    01-14-2021, 02:17 PM Go to last post
  14. 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 11:45 PM
    • Replies: 0
    • Views: 5,079
    04-21-2020, 11:45 PM Go to last post
  15. 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 10:09 AM
    • Replies: 0
    • Views: 3,712
    04-08-2020, 10:09 AM Go to last post
  16. steam line

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

    Started by bigron111‎, 03-01-2020 05:41 PM
    • Replies: 0
    • Views: 3,680
    03-01-2020, 05:41 PM Go to last post
  17. 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 01:59 PM
    • Replies: 0
    • Views: 3,233
    01-30-2020, 01:59 PM Go to last post
  18. 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 07:30 PM
    • Replies: 0
    • Views: 3,807
    01-20-2020, 07:30 PM Go to last post
  19. 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 06:14 PM
    • Replies: 0
    • Views: 4,179
    12-09-2019, 06:14 PM Go to last post
  20. 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 10:10 PM
    4.8l, maf. iat
    • Replies: 0
    • Views: 3,976
    12-02-2019, 10:10 PM Go to last post

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