This is a hot shot car mechanic supposed to do on difficult kind of troubleshoot ! Trouble not only in vehicle but also on supplied ECM, means both internal and externally, Double thumb up for you Eric ! Good job man !
I don’t work on cars or motorcycles at all anymore I’m too old and I’m old school. I’m mightily impressed with the way you tenaciously track down a problem. Just like when I worked in telecom data communications. All about checking the wiring, and the components. Well done Eric👍.
Awesome video. I really like the in-depth explanations with the wiring diagrams. They can be so confusing sometimes so it’s really helpful to have you walk us through them.
Eric absolutely outstanding video, one of the best as far as learning Can Bus basics and troubleshooting techniques. Love your patience and the fact you never doubted yourself ! Once again absolutely Great Work !!!
Excellent work bro it has to suck to keep coming back knowing its not your fault and having the feeling the shop dont believe you... Thanks for filming ur hard work!
Great video. I'm looking at buying one of these that is a smoking deal because it has some similar problems to this one, this video gives me all the knowledge I need to actually fix it without just throwing money at it
Just not your day ! I know how you feel , but you’re still the best mechanic , also honestly to the customer and very good review on the video footage. 👍
Top diag Eric.Never had alot of faith in reman ecm's. If any module arrived in a box that had been opened or had greasy finger marks on the box (done the rounds in the workshop) it went straight back to the dealer. Some can't be trusted to do the right thing.
u r such pation man. i love what you r doing. i m learning lot from you. belive it or not. the messenger is familly. thanks lot. just stay on. you information for some are priceless.
Didn't understand much about the whole video other then you are good at what you do and seem to care about what you do, if you continue to do that and charge a fair price you will be very successful in life.
I think that happens only to the best on the industry. You are one of the best, always giving really good food for the brain. Great diagnostic process and always trusting your work. Excellent pal. Best regards.
Great video ,well done . I had this exact vehicle same issue ,I traced it too pcm . Me and the shop that had me trace it out did not have a way at the time to program ecu no j box ,had too ship it too dealer . Yeah being a tech for a long time when you get repeat parts with issues yeah it sucks when it looks like your throughing parts at it and not knowing what your doing I’ve been there with factory parts that are junk. You obviously know what your doing and they called you keep up the great content !
Good work on the cat. My name is Charlie. I run. Keep it simple mobile auto solutions in San Antonio. Texas, I have the same exact car with the same exact problems. They already put A new PCM Thanks for awesome info may GOD BLESS You and yours
Yep classic! I have the same exact problem with my 06' and all say ECM, others blew a lot of money before they strike the answer. thanks for the truth in the video.
Another great video. It would be nice to do a video on how you program the ECU Eric. Thanks for sharing your high skill knowledge. I cannot get enough out of your videos. I am hooked on them. It's like a disease!!!
Just at the moment I have a Cadillac with a customer no start. Several issues to sort out. But likely not computer at can-bus or single wire. I found your troubleshooting excellent and I learned from lessons included in post. Thank you for the instruction and the "heads up" as part delivery with prior install to electrical part. I find my customers love their GM features and patient repair with test and confirm...competence has them returning...as individual and then as gathering their friends. I find that listening to my customers as what they expect...and delivering that expectation is when....they are 100% satisfied. I find when I can briefly explain in simple terms...what the problem might be works well.....and further, coach those people to good maint schedule. They like the comfort and general reliable Gm models. M
2+3=5: Sometimes when you know your stuff, because of certain situation you begin to doubt yourself. 1+1=2&1+2=3&2+3=5. It gets tricky when you have a situation where you have 2.4+3.4=5or6. Sometimes your laws are known but sometimes you have an unknown. I am glad you were sure of yourself. A situation like that would make a lot of people doubt self. I am so glad you did not let the dealer throw you for a loop.
Had this exact same problem with my Mom & Dad 05 Cadillac SRX 3.6L. He ended up going with a remanufactured ECM from Flagship One. The first one was bad but the second was good. There is a small hole on the bottom of the steering column on the right side where a small screw driver can be put in there to release the key. This is a classic GM problem. Great video.
It’s wins like this that always bring customers back especially when they doubt you hardcore in the beginning and in the end you end up being correct awesome vid man keep the good work going!
These CTS computers go bad all the time. I've changed around a hundred. They're so small and weak. Plus they are bolted right on the hot motor. I don't know why GM engineered these cars this way except to make people like you and me money. They're putting my kids thru college. All faulty CTS ECM's make the key get stuck. Also. If they were Class 2 error codes, I would have started scoping out the Class 2 data line first. Especially at the start of the engine. However, when I saw "key-stuck-in-the-ignition" problem I knew it was the ECM. Now this is an educational video. In that regard, I love how you took your time to explain to everyone in detail. That makes for a great learning video.
Great Diagnosis! Short your long wires together, press zero on your meter if you have that feature or remember the residual resistance...Most electronic resistors are +/- 10% or more, so if it read about 110 to 130 ,I wouldn't sweat it, and on top of that test equipment also has tolerances that give a slight error...You're a good technician proving 3 bad ECMs...If anything, that shop now knows you are the "Tech to Call" when problems need to be solved!
Most digital test equipment is very small less than 0.1 % plus/minus one least significant digit. The load resistors the car module on the other hand is probably 10%, maybe if critical 5%...
@@ADVANCEDLEVELAUTO Have the same issue with a 2007 CTS and the shop says it needs an ignition immobilizer module. Would you suggest replacing the ECM first and seeing if that's the real issue? The shop already replaced the ignition and battery.
watched the entire video .. very informational .. ben having same issue on this car with an 06 cts .. we replaced the ECm on the shop and still same issue .. this one is driving me nuts! lol
My friend gave me his 2003 CTS 3.2 L 5 speed manual transmission because he hated it. The guy that traded it to him, when my friend got into some police evading trouble and needed to off his own ride and which was a car that he had just paid 10,000 dollars for, had a body shop so he had my Cadillac looking nice but didn't know beans about mechanics so he hated it too since it had the limp mode problem. They thought it needed a new tranny. Lol. All I did was this procedure and the procedure where you wait 20 seconds wait and turn off and on the ignition without starting the ignition 3 times and boom! I have a bad ass sports luxury sedan! It has 150,000 miles on it. I'm never gonna stop driving it! It just needed the relearn procedure to the accelerator pedal positon sensor. The check engine light code P2138.
Nice vid! You got skills! Maybe i'm mistaking but i once had a car, and i meassured the 60 ohm resistance for diag puspose, but also extreme high res. My mistake was that i meassured when there still was communication on tje bus. After let it fall to sleep.... resistance check was posible from obd. Love your vids, greets from the Netherlands
who are you? you are genius! I'm just starting to have problems with the key being stuck cause of AntiTheft after AAA installed a new battery - they did not follow the process of "home" on the battery. I was told I'd have to have the entire system re-programmed!
The CAN lines on GM are continuous thru the modules just like a traditional CAN network. They just go in on one set of pins and out on another, but interior to the module they are a direct connection if you check them with an ohm meter. CAN + in and CAN + out. Likewise on the negative. The weird ohm reading on the CAN network may have been because the CAN was powered up when you checked it.
very good video thanks I just had a problem like Cadillac cts 2007 the owner bought a used pcm the car started but not ruun I told him to buy a new one but don't believe it in my diagnosis. Clase 2 Is the most common problems on this cadis.... thanks again
Great video, I think that many people may have given up on this one, must have been very frustrating for you.. I enjoy all of your videos by the way , kind regards, Chris. U.K.
Great technical diagnosis. That would have tripped up many techs. Most especially once you get a replacement part that is garbage. The ECM mounted to the top of the engine just seems GM wants that car to break down. What a bad design.
you are right on track. a technitian today have to be careful when measuring can data in the dlc port... there are many cars today that it is not possible because the can wires in the dlc goes thru a "gateway".... in this case the transmission ecu has the gateway built in.
So you wouldn't doubt a diagnosis with 4 failures in a row? They should be asking the shops that supplied the faulty parts for compensation, not the owner of the car. Just bad luck all round.