LS 4.3 4.8 5.3 6.0 6.2 No Spark Fix

Oh Man!!! I have been waiting for this for almost ten years now! Looks like things are picking up pace with this build.
This engine ran fine on the engine stand a few years ago. It blew my mind to see this thing somehow lost a ground along the way or if it was something caused by tuning the ecu. I would not have expected to see the ground go to open when the ignition is turned on. I do not know what would have caused this. Luckily, this repair seemed to do the trick.
I hope you found this video helpful in getting spark back into your GM motor.
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#automotive #repair #engine #fix

[@kevinblingsummers7541]

I just tried this and oh my God it worked. So many mechanics including myself couldn't figure out how to get spark on that side. So I did what you did in 5 minutes and its running on all cylinders. Thank you so much

[@scantronsgarage]

Glad it helped!

[@garybender6031]

Thank you so much that was the problem on my son's Cadillac Escalade it was the ground to the block

[@scantronsgarage]

That is great! I am happy this helped you out!

[@marvinwilson-dq8ec]

Thanks for the info.

[@scantronsgarage]

You bet! Hope it helps.

[@danmaynard2002]

So just wondering did you have any further diagnosis of the original wiring harness that cause that issue when you dove further in to rewiring. Your method worked on my 2500 silverado but I can't understand all my ground cables are in good condition and connected but when I don't have that jumper wrote I lose all spark on the drivers side of my motor. If my ground cables are good ands I'm not finding a broken wrote what would cause that too happen?

[@scantronsgarage]

I had the same issue. This engine ran fine on this wiring harness not too long ago. The only thing I did was remove it and put it back on when I assembled it. I double checked all my ground connections as well. The only thing I can think of is wire corrosion somewhere making a bad connection. I should note that I completely went through this harness to make it a stand alone and I did not see any concerning issues. Basically, I dont know : /

[@maskedmotorsdiy3575]

Did you know your video settings do not allow viewers to click the Notification bell?

[@scantronsgarage]

I did not know that!!! Thank you for pointing this out. I will see if I can change that