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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: 16,732
    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: 5,948
    09-16-2007, 02:02 PM Go to last post
  1. 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 12:33 PM
    4.8l, ecm, no start, pcm
    • Replies: 1
    • Views: 30
    11-05-2019, 04:33 PM Go to last post
  2. 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 01:36 PM
    • Replies: 3
    • Views: 413
    10-06-2019, 08:04 PM Go to last post
  3. 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 04:18 PM
    • Replies: 1
    • Views: 309
    08-29-2019, 01:22 PM Go to last post
  4. 2005 Silverado 4.8 noid light on solid

    I have a 2005 Silverado 4.8 I recently bought, and it has a mis on cyl 7. Replaced plugs, wires, and coil on cyl 7. Still miss's, checked spark...

    Started by Geardo‎, 08-10-2019 01:13 PM
    • Replies: 1
    • Views: 352
    08-29-2019, 01:15 PM Go to last post
  5. Fuel pressure regulator

    Still having issues with mine cold starting, so I changed the fuel pressure regulator and now I have this buzzing/vibrating sound?

    Started by Esky02‎, 11-23-2015 03:28 PM
    • Replies: 1
    • Views: 849
    07-21-2019, 09:51 AM Go to last post
  6. Engine Runs Cold

    New guy here, of course with a problem... I have a 2000 Silverado 1500 ECSB that had a 4.8 and MG5 5-speed. At 252k on the clock it was time to...

    Started by 2K_Silverado‎, 03-05-2019 06:35 PM
    • Replies: 3
    • Views: 1,478
    03-14-2019, 08:44 AM Go to last post
  7. 00 Silverado 5.3 automatic transmission problem

    My truck cant go any faster than 35 m/h it switches first and second gear but doesnt switch to third gear the speedometer works good the reverse...

    Started by Ismael Torres‎, 04-08-2018 10:21 AM
    • Replies: 2
    • Views: 1,447
    03-02-2019, 10:31 PM Go to last post
  8. 0411 swap problem - getting $0281 error code on autocal

    96 chevy SBSC with L31R I have performed the repin for the 0411 per the spreadsheet from Lextech. I just got my flash/tune from Blackbear, and am...

    Started by homeslice‎, 10-13-2018 08:01 PM
    • Replies: 4
    • Views: 1,053
    02-24-2019, 11:59 AM Go to last post
  9. Dương vt silicon hit đất rung thụt ngoáy

    Giá sản phẩm: 680,000 VNĐ Liên hệ:0389.346.762 Mis. Hằng Tnh năng: Kch thch điểm G, âm vt, giải tỏa sinh lý hiệu quả...

    Started by saobanggps‎, 11-14-2018 05:42 AM
    • Replies: 0
    • Views: 464
    11-14-2018, 05:42 AM Go to last post
  10. Missing on all cylinders in cammed Tahoe

    Ok guys, I have an 05 Tahoe that has about 6k on it since rebuild. About two weeks ago I got a stumble while driving in town and the dreaded...

    Started by RU11550‎, 08-04-2018 01:51 AM
    • Replies: 2
    • Views: 1,044
    08-15-2018, 06:18 PM Go to last post
  11. Dreaded white smoke

    Helpppp.! I have a 1994 c1500/k1500 EFI converted to carburetor 305 short box stepside Frankenstein.. i recently noticed a shit ton of white smoke...

    Started by groves069@gmail.com‎, 03-17-2018 06:32 AM
    • Replies: 0
    • Views: 544
    03-17-2018, 06:32 AM Go to last post
  12. 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 07:30 PM
    • Replies: 4
    • Views: 1,663
    03-17-2018, 01:26 AM Go to last post
  13. 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 10:28 PM
    • Replies: 1
    • Views: 601
    03-17-2018, 01:23 AM Go to last post
  14. 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 07:19 PM
    • Replies: 1
    • Views: 589
    03-17-2018, 01:22 AM Go to last post
  15. 2003 chevy silverado fouling o2 sensor after closed loop

    Hi every one I am having trouble figuring this one out. The problem I am having is weird. The truck runs fine at start up. Then after I drive for a...

    Started by jaysonolson‎, 01-12-2018 01:05 AM
    fouled o2 sensor, hesitation, ruff idle, smell of fuel
    • Replies: 1
    • Views: 720
    03-17-2018, 01:19 AM Go to last post
  16. 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 03:28 AM
    • Replies: 3
    • Views: 1,362
    01-15-2018, 08:57 PM Go to last post
  17. 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 07:25 PM
    • Replies: 1
    • Views: 1,526
    01-15-2018, 08:46 PM Go to last post
  18. 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 06:08 PM
    • Replies: 0
    • Views: 1,234
    04-18-2017, 06:08 PM Go to last post
  19. 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 03:25 PM
    • Replies: 1
    • Views: 653
    04-11-2017, 10:28 PM Go to last post
  20. 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 01:13 AM
    • Replies: 3
    • Views: 1,696
    03-23-2017, 01:13 AM Go to last post

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