Wow Jake, the Hummer owner must think that you are a God send! Just had a similar story with a dealer misdiagnosis on a Ford Focus no AC problem where they quoted a compressor lol. Customer went to the dealer with my invoice and actually got her money back! 😀

Hi Jake, As a Brit of a certain age here's an easy conversion for turning celsius into fahrenheit - simply double it and add thirty. So your 32C becomes 94F. It's actually 90F, but you'll only ever be a few degees out no matter what temp you're converting👍

Egregious case of misdiagnosis by dealer! The ignition codes should raise a flag on a no crank case. I really enjoy following your thought process on these cases - very concise and informative for us viewers. Great job, Jake! Very responsible reaction from the dealer! Not something you hear often! He's really trying to regain customers' trust and cleanup the shop. My hat is off to him.

I worked briefly at a Ford dealership and i can tell you that they did not have anyone that specialized in diagnosis as it was a general repair shop . Most are clueless and poorly trained, it takes a special mind to solve these problems and watching people like you help techs hone their skills. Shame the customer takes the hit for a bad tech. Many years ago i had a truck come from a shop that kept blowing one fuse. They charged him close to a grand and did not fix it. I got lucky found the short in under 5 mins, it was dark and i moved some wiring and it sparked lol.

Man Jake your videos are making better techs with each one that you upload! The way you describe and walk us through even the navigation of service info (which is very time consuming and confusing most of the time) is unmatched! Every time I watch a video that you put up I gain very valuable knowledge that helps me diagnose some of the most complex problems on these vehicles which I never thought I’d be able to do half of before finding your channel.

Awesome of you to reach out to the dealership. I am stunned at the positive response you got! I hope theres business coming your way. I'd be a customer for life after this.

Holy crap!!!! What a good job brother!!!! I’m really impressed, you are a true mechanic 👏👏👏

Nice job Jake...Your videos, your actions, and your honesty speaks volumes about your professionalism and character. Thanks again.

Very impressed with your technique on this diag. This shows how important it is to start with the basics and work from there. It also teaches me that information is vital and doing the research to understand how the system works before attempting to diagnose the problem is key! This was a great one jake, thank you for sharing!

Thanks for sharing that, very interesting. Sounds like some retraining needed at the dealership.

Jake, appreciate the way you explain your process and move us through the data and information as it develops. I think I'll have to watch this one again so I get it right in my head (maybe three times!) Thanks for Sharing!

Hello mr jake as a # follower when you are not posting I’m watching some videos from the past this is how I’m learning. Thank you for a great class Keep it up

Very clean and correct diag sir 👏 👌. Tech who wrote that info should feel ashamed..money never gona be bigger than dignity...cheers

Dealers once had Master Techs, but dealers everywhere, not just GM places like Mercedes-Benz too, decided paying for Master Techs was costing too much profit, and has been laying them off for a few years now leaving the lube crew to to all the diagnostic work, like putting 5th graders in collage to teach nuclear engineering...

Good video what a great way to show how wrong the (( trusted dealership)) can be . We need more people like you in this industry. I spend ton of money in dealers and realize that they always wrong

Really nice diag Sir! Dealers all over the world suck, I was working in one of them......

I do that same exact repair on broken pins all of the time. There are just far too many different automotive connector terminals to try to keep up with them all much less keep them on hand. This kind of misdiagnosis is becoming more and more prevalent in the industry these days. Just not enough trained and qualified young techs coming into the field and it’s only going to get worse. It’s good for people like us as our value just continues to increase but it’s a horrible thing for the future of the industry over all.

If like some garages that dealership would have been pissed off at you. I have to give props to them for being honorable and refunding the full amount and props to you for actually helping educate them. Chasing problems in wire looms us not easy and not for timid or impatient people.

Great diagnosis Jake! Very important to check power and ground in a control unit that you're suspecting even though diagnostic procedure says replace control unit. I like that you called the dealer to let them know that they have to be careful and more when they are charging extra diagnostic time to check a concern. That diagnosis has to be perfect. Usually, the dealer reimburses your money, but many times people just don't want to go back. But it you have a good proof they do. Thank you for sharing, Jake! Another good one!

I’ve been a technician for about 12 years and have spent about 8 years at various dealerships and can tell you I’ve never met a dealer tech that knows what they are talking about when it comes to to diagnostics. I remember having to teach a guy with 20 years of experience how a relay worked and he looked at me like I was Albert Einstein. My current shop foreman has almost 30 years of experience with Audi you can just tell he has no idea what I’m talking about when I talk about advance electrical diagnostics. He just shotgun’s everything. It doesn’t surprise me to see this kind of stuff from dealer technicians anymore. They just have no clue what they are doing.

Sounds like a dealership that is actually trying to do the right thing. Paying your invoice goes above what would be expected.

Love your videos. Leaning a lot for my DIY fleet maintenance.

Glad to know that we can still “hot wire” a modern car.

Great Diag and thank you for sharing this!

Great job! Another successful diagnosis! Keep them coming!

If the manager of that dealership went through with his promise of refunding the customer plus the cost of your work then he is an honest man.

Thank you for your time sir

Thank you for your time.

Thanks for the follow up! As always love your videos and the lesson you provide us its priceless. :)

Jake I have to say your approach to problems and your through explanation of the problem are so very clear and precise. Your videos are spot on and your clarity in explaining how you come to locating the issue is superb. True professional and thanks for explaining how you charge for diagnosing and the other option of making the repair. The ultimate professional. Thanks for sharing your experience and knowledge. 👍 Artie

Good clear thinking and diagnosing on your part fixed this vehicle thank you.

Thanks for making this video. I learned a lot. I liked the way you analyzed the complaint and the procedure you went through. Like your style. You are definitely one of the tops.

Just found your channel. Amazingly helpful info. Thank you

You got a new sub!!! This diag was spot on

👍 nice work. Thanks for sharing.

i think that was your best video yet

Great post thanks .

Is an experienced technician. This is still very educational

Fantastic. Thank you.

You know how to do your thinking process awesome!!

Hi Jake, I can from my own experience, that you are a very experienced in your line of work and have very good customer service qualities. I loved your videos. Can't wait to see more. Hope for your continued success. God Bless.

Nice video , i would not diagnose this one right from the first time , that’s for real ! At least if i don’t be sure that the HS can bus is okay before going to something else ! Very good diagnostic , thanks for sharing

You are THE MAN!!!

Great video! As soon as you mentioned the CAN Bus to the BCM I had to go back a couple of times to verify what the year was and if I heard you correctly because I was thinking, that vehicle year didn't have a CAN Bus to the BCM. Sure enough you verified that it does not have CAN to the BCM. Excellent to the point diag without any complexities added in! Just subbed! 👍🏻

Great job ✍🏼👍

had a trailblazer in with cluster, and passenger window not working from another shop. it had previously had 5 instrument clusters replaced, and a window regulator. passenger door module was feeding 12v on the data line. passenger door module/switch fixed it. splice packs came in handy on this one.

In regards to the C1, C2, etc in the diagram. C designates a cavity. And X designates a connector. So X1 would plug into C1 on the module. 32 years as a master diagnostic and programming specialist. Just discovered you on youtube. Awesome and no nonsense approach to your diagnosis. I have made a fortune over the 32 years Ive been doing this from dealerships. It is always the same story. I always preach check for codes. The first thing i do is pull codes. When i started in the late 80's cars where fairly simple if say a headlight wouldn't work. Mechanics could guess back then and usually be right by pure luck. Nowadays it could be any number of possibilities and they will throw parts at it or my favorite is when they condemn a module and then are surprised to learn that it was something else. I encourage dealer techs to keep doin what your doin so i can have an endless supply of work.

Very nice information and explanation,thanks to the Dealer's to provide some jobs

Jake, grreat video, I'm glad the dealer was upfront with you about his concern with the techs because he does have to trust them since he cannot double check their work. Reimbursing the charges the dealer charges plus yours is at least good faith, but I don't know if I would go back to that dealer for anything more than an oil change. And by the way, you are like a wizard with all this high tech diagnosing stuff but yet the metric stuff leaves you baffled. The United States should have gone metric back in the 1970s like they were supposed to. 1 bar is about 14.7psi, whiich is atmospheric pressure at sea level. Have a great day and I always look forward for your videos. I wish they had youtube back in the 70s when I was still in my 20s, maybe I would be as smart as you.......Ah, maybe not.

Great job Jake...

very good video and good work tks

Great video and diagnosis. I’m trying to come up with my own plan to the diagnosis when you explain things. I would have been on the right track. Obviously, Alldata or Mitchell is a must when you don’t have OEM info. A lot of libraries offer access for free and I have printed out many diagrams there myself. I’m glad you reached out to the SM and he actually is going to make it right to the customer. Hopefully he can clean house in the shop and get some decent help.

The shop that did this truck diagnostics needs to give back his money are the owner of the truck should take them to court. I sure the court will make them pay his money back shame on them. That makes the point how and why people don't trust mechanics that doed diagnostics because the mech dont know what they are doing. Good videos

Another awesome diagnosis. From the rust present on the inside of the dashboard I;m willing to bet that the sunroof drains are blocked and or cracked or the windshield is leaking. We have a H3 and both sunroof drains were blocked and cracked from freezing here in the North East. I would run some water through the drains and watch under the dashboard to see if water is draining into the truck. Thak you again for your well thought out diagnosis.

Well done 👍

Great job

Zero degrees Celsius is freezing point and 100 degrees is boiling point. Keep that in mind and you will at least have some idea. Great video!

Can't wait for the next one. Start to finish the tutorial. I loved it, thank you,very helpful video tips 👍 SHARP Automotive Diagnostics & Programming From Nick Ayivor from London England UK 🇬🇧 ⏰️ 22:22pm

Great video and the load test with the meter is definitely the way to go. Test light burned me a couple times now i load test everything. Might be overkill but dont get burned that way.

Great case study! I really appreciate you showing the data link reference, I use it all the time now. I agree that the Celsius is very annoying as is how the RPM comes up as some other measurement as default. I'm really hoping for an update to correct that issue.

Another cool video thanks for sharing Jake.😊

Great video man, nice to see the dealer own the mistake and be up front about the issue. Great technicans are few and in between these days. You show that there is still good ones left and I strive to run my mobile diagnostics the same way. I've met some great customers treating them right and be through with my diag and documentation. P.S loved the Odesza shirt such a great artist.

SCIENCE! great video!

A second opinion that made the customer very happy!

Everyone makes mistakes but at that point the decision you make is where your reputation can be made or lost… If you go above and beyond to put it right then the customer will return because you made it right If you don’t put it right then that customer will never return and nor will anyone who will listen to them… When you do good things only some will go out of their way to tell others or leave you a great review But when someone feels ripped off annoyed has a bad experience etc they will tell anyone and everyone they know about how bad their experience was…. Good job as always sir

Superb job, Jake. Call that dealership back and tell them you’ll take the lead tech position for $175,000 per year (40 hour work week). 😁

Very nice!

As usual great video Mr Jake . What’s happened is that the dealer’s always want to get money out nowhere and they are lacy they don’t check nothing. How hard was to take off the knee protection? You know..,

So enjoyed this!!! Where do you get your tester bulbs?? Nice work!!!

That rust under dash makes me think it’s flood damaged too.. great job 👊🏻

wonderful ❤

I don’t know we’re these dealers are getting there techs, I had a similar situation on a 13 Exployer, the doors wouldn’t lock with fob but you could hear the relay clicking when trying to unlock, the dealership said it needed an RFA module & a bcm ! 2K was the estimate, the customer called me & it took me about 10 m to diagnose it, fuse#27 in bcm was blown but I didn’t stop there, I knew it blew for a reason, it took be a couple hours but long story short it was a chaffed wire in the door from someone botching a window regulator job , Crazy! I’m not the caliber tech you are but in this video there was a code literally pointing them in the right direction lol ! How did they miss that

Nice job! From my experience working at a dealership, most of the time those invoices are written by the service advisor. And they seem to write a bunch of nonsense to explain their time to the customer. But 459$ for diag time with the wrong call looks bad. Good on manager to give refund

Thats so interesting ❤

nice job 👍

That was awesome

What the great content

I'm like you and can't do the F-to-C conversion in my head. I just remember a few key temps: 0C water freezes (32F), 25C room ambient, 40C = 100F, 100C water boils (212F).

First thing as a hack I tell my customer if there is a no start on the phone before I even start charging them is Place key in ignition, open driver door, hear a tone?, close driver door, turn key to on position, do you see a check engine light?, is there a key and a lock light that comes on and goes off? or the absence of either of these. Before I even start my journey to them, I already know what to expect when I get there. Dealerships are just ridiculous these days.

What you mentioned about the units on live data I mentioned it to the customer service but it still hasn't been fixed on the entire GM line. Also I noticed that you have no status on the dtcs

It was guntersville Chevrolet wasn’t it. They suck. Awesome video!

Can't believe that I actually stayed the whole 52.20minutes especially once I notice that low voltage circuit code and knew you would find a wiring issue . But I got to admit really enjoy the thought process. Thank you for walking us thru it again, like your other videos.

I wonder if you have the euro market scan tool. If its celsius i normally just double it and add 30 for a near reading. great vid 👍👍

Where did you get your test leads wires and the connectors on your bulbs that you hook your leads into

34:00 You say you don't do overlays - and rightly so because there might be other wiring damage at the same point. But you absolutely must do a bypass test (like you did) because you can now say to the customer: "There's an open circuit between these two points... And I've PROVED that repairing that fault WILL fix your no crank no start" Customer has greater confidence in you, far less likely to get refused further time than if you said "There's an open circuit between these two points which we need to find and fix but may then reveal further issues" I get a lot of mis-diags in, not so much from dealerships though but from independent workshops that do very little diagnostic work, just routine maintenance so are not regularly involved in dealing with wiring diagrams and evaluation of data. I am totally the opposite - my work is almost all diagnostic and electrical/electronics repair, I do a small amount of mechanical work if I spot an issue and the customer wants it fixed while I have their vehicle.

Grasias

Perfect.

Greatest video Me encanta que saque a relucir lo mañoso que son las agencias de una marca . Las multimarcas son más dedicados

Thank you for the awesome video ! What state are you locate ? Thank you again .

The trajectory this industry is heading is looking grim. Im a kia dealer master tech, and sadly i cant wait to get out of here. The labor times are horrible, the hoops you have to jump through are ridiculous, and the typical dealer policies of poor dispatch, no communication, and no accountability make for an increasingly low morale shop.

The diagnoses is not done until 35:50 where you proved it. I had a feeling there would be green crusties when I saw the rust when you pulled the plastic knee bolster off

7:30 🫡bingo lost communication 🧐but why ,I got wet fuse box’s all relays are trashed . After redone I had same problem .Main harness to fuse box 👈🏻I unplug it plug it back in then it starts . I did new grounds I might need new fuels box and harness clip that goes to fuse box under the hood .my new transmission down shift after about 5 miles or posiably warmed up not sure . I think all my problems might be do to lost communication . I didnt watch the whole video yet hopefully you figured this shit out 😂GM blows 💯 oh yeah water gets in under the hood and also goes alll the way in the back in to the #5 also a brown wire on top of the motor that grounds out . Timing belt chews a guard metal goes to oil pump . A fork in the Transfer case beaks

Your so good

On your g/S issue.. if you just file a report, they will usually fix it within a week or two. At least I know that xtool has been really good at fixing stuff like that. They even added topology on my seven hundred dollar xtool D8 recently. So that's a cool update. I know it takes time, but if you send them a report for the flaw, they typically will fix it.

(Update) one month later & still no refund issued to customer from the stealership, sorry I meant Dealership Lmaf.

i once got caught in the middle of a bad repair from another shop. bad part was the day shift guy at our shop made it worse. rather than eating his labor the shop owner went ahead and charged it then the customer wasnt happy the first shop lied to him. never fun being in that spot. someone had replaced connector bodies got the wires wrong then commenced swappin wires in other connectors trying to make it all work. burnt a cluster up in the process.

Looks like it's been wet under dash, why crusties in that connector? Check out a marine product called corrosion block, great for melting crusties. If that connector was total junk would you then wire around on 15 yr. old vehicle? I usually do it your way,but if it's not easy to get to, I run new wire and put a body tape note on wire saying what it is. Just my opinion.

It's crazy to see where the minds of some of these techs go. I mean that's a left turn and then some. I just don't get it. I mean the wring diagram is there for you to see how the system works. How does one come to the conclusion of a bad bcm?

I'm curious to know your reasons for not performing overlays. Has there been any cases where you could not find the broken wire?

How long did it take you Jake to diagnose that Hummer?