Shut Down While Driving! (Total Electrical Loss) Chevrolet 6.6 Duramax U1301 U1305 Pt2

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[raymondbardeen]

So…. You are a regular customer, (not a real technician), and you bring your vehicle to a dealership. They fire the parts cannon because they claim the data told them the modules lost connection. Thousands of dollars later, your vehicle still doesn’t run. The service writer apologizes for not fixing the problem and recommends you speak to sales and purchase a new vehicle. This hypothetical situation is becoming the reality to most vehicle owners. Wish there were more experienced technicians with ethics, like you Ray.

[clbcl]

So, the problem literally nut behind the wheel and in front of it. Our favorite mechanic and his Mr. Ray.

[robertduncansolway]

"The person who never made a mistake never made anything" served me well for over 48 years as an aircraft engineer. Still makes one feel stupid though. Well done on the troubleshooting, had a few difficult ones in the past myself. Retired now but still miss the challenges.

[Fixit]

Geez, All that hassle for a loose/missing nut... I can't imagine the look on Ray's face when he realized it was just a faulty ground that he had removed during his dash upgrade. But at least he didn't have to take the whole dash apart to fix it. Kudos to him to finally figure it all out.

[Savageitright]

Ray had his own comeback. Thanks for showing us you are human.

[WilliamLaakkonen]

Having followed your channel since just about the beginning - dealership days- I am constantly impressed by your willingness to share even those experiences which others might not want to admit to. This is a sign of great character and the ability to grow. Hat's off to you, Sir. Back when I was in the electronics repair business, we would call this a TIF (Technician Induced Failure)... not that it ever happened. lol. Cheers guys. Great video, thanks for sharing!

[davidrobinette]

Even “Ray the Magnificent” can make an error. I’ve done the same thing. You still ROCK.

[kendiggy]

I know the pain you feel when you just can't figure out a problem, and you search forever, and think you'll never find what you're looking for. I also know the pleasure from your laugh after getting it connected, when you find a very simple problem, that was even all your fault, but you're grateful that you can actually fix it!

[donaldmacdougall]

Bad grounds can make you chase your ass a round all day. Glad you found it

[GixxerFoo]

Meanwhile the rest of the world would buy a Wal-Mart code scanner, plug it in and tuck it up behind the dash... (ducking to dodge flying tools and chairs) I am eating this video up, this is the stuff that makes you bang your head against the wall and Ray is just cool and calm going through all the steps.

[FlyEaglesFly]

Customer states previous mechanic tried to diagnose vehicle while driving it...😅😂😅😂

[kevinteeter]

As soon as you plugged the scanner in and everything came on line I knew it was a ground problem. Glad it was an easy find. Have a great day buddy!

[CavGT]

Electrical gremlins can be a PITA to diagnose but are SOOOO satisfying when you get them fixed!!!

I had a customer in 2011 bring in a Ford chassis cab bus to the shop. It would randomly loose all throttle, would run extremely rough, and sometimes stall. Typically a restart would get it back up and running, but for an indefinite period of time. He had already spent $5k at 2 other shops trying to fix this issue. We were his last hope.

The data scanner showed that the TPS would suddenly show zero throttle even when the ECM commanded throttle. All wires were in good shape and ohmed out good.

After a couple of weeks of wracking our brains, we finally figured out what was going on. Ford engineers, in their infinite wisdom, changed the TPS sensor on the throttle body from a potentiometer type to a magnetic read type. Well, on the 5.4 and 6.8 motors, the alternator is RIGHT next to the TPS sensor on the throttle body. Those chassis buses also all utilize an aftermarket alternator to deal with the extra load from all of the lights and dual AC systems. Those alternators were around 250+ amps.

With the new TPS in place, as soon as the alternator started putting out a lot of power, it turned into a giant electromagnet, which would scramble the TPS signal!!!

So, our fix was to replace the new TPS sensor out to the old one. Problem solved!!! So, we went around to all of the local Ford dealerships and bought them all out of their old TPS sensor since we worked primarily on chassis cab buses.

[Havok]

Customer States: Vehicle towed in by myself. Now I gotta fix my own crap 🙃 "Everything is up! Security is still pissed at me." 😂

[williamwerner]

There is great satisfaction when you find an electrical issue and you know you have the root cause!!
I had a ground issue on my plane that took me 7 hours to fully track down and fix!

[Torgonius]

So it wasn't the Banks stuff, it was the guy who installed the Banks stuff! Good for him he has a great mechanic!

[dogy]

One little ground wire. I can't tell you how many times it came down to one, little missed wire. Happy for you man. Glad it's back. Nothing feels quite as good as having your baby back, running the same as ever.

[bearing_aficionado]

So your truck downloaded the Crowdstrike update!😂

[robyndawnhannigan]

Thanks for again showing us the value of sound diagnostic process. All the codes in the world will not find a ground issue.

[JohnCutright]

While working at chevy dealer in body shop, heavy collision had almost same problem because the same ground wasnt tightened by me when i had to install new dash but it was intermiten problem.9 hours later found problem almost lost my mind again while customer yelled and bitched, My thoughts go out to you because most dont know how much stress this problem causes .Great diag GO RAY GO