Chevy Duramax w/ Allison Trans: TCM Failure

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  • Опубликовано: 27 авг 2024
  • In this video I have a look at a 2009 GMC 2500 that is exhibiting some really strange transmission issues. It only seems to act up once the TCM (mounted on radiator shroud) gets hot. We call it "hot soaking." It sets tons of erroneous codes that just don't make sense. I try to duplicate the symptoms in this video. These are a very common failure on these trucks. -Enjoy!
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Комментарии • 524

  • @SouthMainAuto
    @SouthMainAuto  5 лет назад +31

    **Bosch Diagnostic Scan Tool ADS625** : amzn.to/2T4ACcG

    • @tanis143
      @tanis143 5 лет назад +1

      Holy crap! The old saying is true, quality tools are not cheap. Is there a code reader an average Joe can use that isn't that high on the wallet bleeding scale that would help with home diagnostics?

    • @PaulyD0859
      @PaulyD0859 5 лет назад +3

      How’re you liking this Bosch scanner? I’ve got a Maxisys and a Diagun but, as I’ve heard, one can never have too many scan tools.

    • @jounatherton7294
      @jounatherton7294 5 лет назад

      @@tanis143 you can get all the same but a chinese remake look them up on ebay ....

    • @seandoofer5720
      @seandoofer5720 5 лет назад +2

      I like your test light lampshade, I think I'll make one of those, but it wont be fluid film we cant get it.

    • @frankp.2831
      @frankp.2831 5 лет назад +6

      Could you post an Amazon link to the diagnostic hammer you used? Is it vehicle specific?

  • @kevinbyrne4538
    @kevinbyrne4538 5 лет назад +21

    GM engineer: "Where should we mount this delicate control module? How 'bout right on the radiator, where it'll stay nice and hot?"
    I admire your persistence, Dr. O.
    BTW, I liked the eagle.

  • @mkilptrick
    @mkilptrick 5 лет назад +8

    I really enjoy watching the thought process on diagnosing problems. This is my favorite channel for diagnosing vehicle malfunctions.
    Keep up the great work.

  • @daytonamark
    @daytonamark 5 лет назад +12

    Having a scan tool and knowing how to use it is a lesson you can give us . Thanks Eric

  • @LostMountainRestoration
    @LostMountainRestoration 5 лет назад +99

    Code P0708: "Someone keeps hitting the TCM with a hammer. Make 'em quit it. " A standard GMC fault code. No biggie.

  • @chevyboss97
    @chevyboss97 5 лет назад +14

    It's 2am and I'm watching SMA 👍👍👍👍

    • @garrettstevensen2467
      @garrettstevensen2467 5 лет назад +1

      J LUMINADO I agree!

    • @thetinpin
      @thetinpin 5 лет назад

      I'm with you!

    • @JenniferFuchek
      @JenniferFuchek 5 лет назад

      Alert came through at 4am for me... sadly I was asleep & didnt hear it. :( but I'm here now! 😉

    • @canadiantrucker9574
      @canadiantrucker9574 5 лет назад +1

      At 2am I'm pretty sure even Eric O. Is in bed sleeping with the Serta sheep

  • @daveogarf
    @daveogarf 5 лет назад +1

    MORE MRS. O! (Please). She adds a nice mellow, family vibe to the proceedings, and I just LOVE the way that she keeps you in line (Sorta')!

  • @63256325N
    @63256325N 5 лет назад +6

    Great approach as usual, never gets old and cheers to Mrs. O for not giving the doggy any people food....Thanks for the video.

  • @dB_944
    @dB_944 5 лет назад +6

    The fast learn adapts the clutch fill times and pressures. It also helps to drive it for a few miles to adapt all the ranges in better.

    • @CodyR-wh2nl
      @CodyR-wh2nl Год назад

      is a fast learn required? i bought a TCM programmed to VIN and will install it tomorrow. Do i need to fast learn using a scanner or justing driving will cause the TCM to self learn? everything im seeing from online TCM sellers is that its plug and play if programmed to the vin

    • @dB_944
      @dB_944 Год назад +1

      @@CodyR-wh2nl fast learn is a quick way to adapt the clutches most of the way. I don’t think it’s necessary though. It will adapt in pretty quickly anyway. The first few shifts may be rough though.

    • @CodyR-wh2nl
      @CodyR-wh2nl Год назад

      @@dB_944 thanks David. TCM should be here today and as you know with the shortage of them I’m feeling lucky to have found new old stock so keeping my fingers crossed for good results. Haven’t found a good Allison mechanic around my area like southbend. So most of my stuff is trial and error on my own with RUclips university as my instructor

  • @thegreatjellydoughnu
    @thegreatjellydoughnu 5 лет назад +23

    On this episode of South Main Auto Repair Eric repairs a TCM using the heat and beat method

  • @darenkilminster7692
    @darenkilminster7692 5 лет назад +1

    Its always a pleasure watching your show. It is very informative in this electric age we are in. And of course its always a great pleasure seeing mrs o in your show

  • @gearheadautomotivel.l.c.5476
    @gearheadautomotivel.l.c.5476 5 лет назад +2

    The TCM has extra mounting holes on those Duramax trucks but for whatever reason they just had that one fastener. The last shop I worked for had a fleet with a bunch of those trucks and we used to drill a couple extra holes in the shroud and install two more push pins through the existing holes on TCM brackets. We saw a couple of them come in with the TCM flopped over against the accessory drive. That's an expensive repair for something so stupid. Love the diagnostic videos!

    • @robc8468
      @robc8468 5 лет назад +1

      Somebody a GM got a cost saving bonus for saving 25 cents per truck on push pins.

  • @spelunkerd
    @spelunkerd 5 лет назад +15

    The reflash will always be the area where home mechanics can't compete. Because of that I'd probably try to pull the old module apart and reflow solder joints, if only to avoid the cost of paying somebody to do the reprogramming.

    • @3Mudbone1
      @3Mudbone1 5 лет назад +3

      A Snap On 'Pass Thru' scanner is really not that expensive, but you have to buy the flash softwear from G.M.C. for a day, which is cheap also.

    • @dannyflagg3604
      @dannyflagg3604 5 лет назад +1

      You should open up one of these TCMs. The horse hair size conductors running from the board to the pins just scream built to fail. I've always thought highly of the Allison transmissions but that didn't impress me at all.

    • @DavidScheiber
      @DavidScheiber 5 лет назад +1

      looking at where its mounted (on the radiator) its not super surprising, that thing probably gets a lot of heat cycles.
      its not completely uncommon to have laptop gpus stop working because they just get so hot, i'm guessing its a similar situation here

    • @satamanschmidt3428
      @satamanschmidt3428 5 лет назад

      @@DavidScheiber You can tell from the mega heat-sink that it gets hot.

    • @kwils6685
      @kwils6685 5 лет назад

      I would like too see inside that module as well and see if he found any problems. Do you know if they come apart or is it potted?

  • @jeffryblackmon4846
    @jeffryblackmon4846 5 лет назад +3

    Great info. If GM were interested in that TCM lasting a long time, it should have mounted it firmly on the body and not on a hot surface. Makes you wonder. Wildlife is returning to NY. Very cool.

  • @mikechiodetti6737
    @mikechiodetti6737 5 лет назад +2

    Watching that beautiful Bald Eagle was chocolate icing on the chocolate cake!
    Another great video this time with a Duramax/Allison combination. Heat and a hammer. Great combination for problem solving!
    Hope you didn't get snowed out with this last storm!

  • @elcheapo5302
    @elcheapo5302 5 лет назад +47

    Diesel pickup, bald eagle, and SMA. 'Murica! :)

    • @mark98070
      @mark98070 5 лет назад +2

      Japanese diesel engine

    • @quiktv1587
      @quiktv1587 5 лет назад

      Rare for sma to work on a diesel because of working in his dads shop.

  • @davidpratthk
    @davidpratthk 5 лет назад +17

    The sign of a true professional. Everything can be fixed by a hammer and solved by duct tape. Shame it wasn't duct tape compatible !!

  • @wyattoneable
    @wyattoneable 5 лет назад +2

    You had me at Duramax. I was listening intensely.

  • @Uncleroger1225
    @Uncleroger1225 5 лет назад +1

    Great logical approach. Heat guns are useful for more than shrink tubing. Great for stuck plastic caps too.

  • @felipeguzman2267
    @felipeguzman2267 5 лет назад +3

    Yep, I just had this same issue happen to me (yesterday) in my 2014 GMC Denali 2500HD - Duramax w/ Allison. After researching for a few hours all signs pointed to Dan’s Diesel Performance TCM as the cheapest and fastest fix. I had a hard time pulling the trigger on a $675 part with $93 overnight shipping so I called them up and spoke with Dan. I ran through my issues and what I had done to test and he was extremely helpful and reassuring. I had the part next day (today) by 11AM and had it installed by 11:05AM.
    It royally sucks to have the problem but this is definitely the best approach and in the long run likely saved me $300-500. Not to mention if I had taken to a shop i would have been without my pickup for at least 3-5 days.
    Install is super easy by the way...no tools required for my pickup.

    • @PLAYERMIKEY
      @PLAYERMIKEY 4 года назад

      I’m going through the same issue.

    • @tomhill8467
      @tomhill8467 3 года назад

      +1 on my 09 LMM and I unfortunately can't really afford that kind of new part right now I literally just replaced a drive shaft and that was right around the same cost maybe a little less expensive.... 😒 When does it end?

  • @bobrisso4284
    @bobrisso4284 4 года назад +1

    Thanks For this video Eric 😀.i have a 2009 Chevy Duramax LTZ that would throw 11 to 42 codes after warm up. Let it cool and clear DTC’s would run great until it warmed up. I replaced TCM reflashed it and now all good.

  • @ginuwine11
    @ginuwine11 2 года назад

    Funny, I am a mobile diagnostician in training and have a 2010 Chevy 3500HD w/ Allison 1000 had the PO708 code, and would not move in any gear, went to clear code, no dice. I verified my PRNDL in scan tool everything good. Go and tap gingerly on TCM and go back to scan tool it clears code, now the truck goes in gear. Perfect, will check my powers and grounds, and call it from there, thank you sir!

  • @70kid8
    @70kid8 5 лет назад +15

    Does anyone else miss seeing Eric fighting rusty bolts, pulling hubs, driving out worn ball joints, using big nasty and impact wrenches, spraying brake clean...etc?

    • @AIRJAC33
      @AIRJAC33 5 лет назад

      To this day my favorite vid is the one where he did the coolant flush on that Buick that was all sludged up. Holy carp was that funny.

    • @Embermist69
      @Embermist69 5 лет назад

      Oh wait for the next video, might just have a few or all..... It's rust belt, so ya kind of, but never know.

    • @kevinwoodcock7578
      @kevinwoodcock7578 5 лет назад

      I hear ya 70's kid..I miss the heatin and beatin myself.

  • @leehowse1424
    @leehowse1424 5 лет назад +3

    Hey, just wanna say thanks for all your videos, your a great mechanic! And should be very proud! Please done ever stop doing videos. All these best to you and your family :)

  • @dogguy2012
    @dogguy2012 5 лет назад +2

    Awesome as always. Your knowledge is tremendous. The rest of us would have started out by hitting that module with brake cleaner ....

  • @luisolivero423
    @luisolivero423 5 лет назад +1

    Thx so much again.....Anything GM/Chevy related is knocking at my front door.....Preemptive knowledge...love it!!!

  • @BigDog50001
    @BigDog50001 5 лет назад +27

    I thought 35+ codes were normal for a GM..... ;)

    • @BigDog50001
      @BigDog50001 5 лет назад +1

      @@mt1885 I think your sarcasm meter might be out of adjustment.

    • @MegaDysart
      @MegaDysart 5 лет назад +2

      Aris Torm I love chevy. Too bad they’re not made here in America, but Canada and Mexico. So looks like you might be the one with the Pom poms waving the flag for a vehicle manufacturer that makes their vehicles outside of the US. Lol

  • @russellpatterson8793
    @russellpatterson8793 5 лет назад

    You say thanks for watching, I say thanks for teaching

  • @richardcrouse4644
    @richardcrouse4644 5 лет назад +1

    Enjoy your videos. Educates vehicle owners as to your profession's difficulties managing all the know-how to repair a vehicle. Still takes good old fashioned horse sense rather than just believe the code checked is always right. Follow through on wiring harnesses for bare wires, etc first. Thanks for posting, from Texas.

  • @jayslo914
    @jayslo914 2 года назад

    I just replaced my tow mirrors and exterior door handle. I also cleaned out some old wiring from the last owner from an old boost gauge that was powered by a fuse style jumper into an ignition spot. I have only owned the truck for a little over a week. I pulled out the jumper that was in the fuse box that had 2 10 amp fuses and never put one back into that place. I was throwing a TCM communication failure code pu0101 or something like that after doing so. But was able to clear the code with the obd cs2 tuner/monitor and drive the vehicle.Also CS2 tuner/monitor would not stay on and kept going out/coming back on. I got home and put that fuse back in, now, tuner is working no problem and I am not reading any codes after driving around for three hours and leaving it sitting in hot temperatures idling. Unable to replicate the issues that I was having yesterday after replacing the fuse. I’ll keep you updated @south main auto repair llc

  • @nhra7110
    @nhra7110 5 лет назад

    Finally the long awaited Eric O. tool box tour 😁

  • @pauldavis5075
    @pauldavis5075 5 лет назад

    A quiet air compressor does exist. I had no idea! FYI, California Air Tools. Thanks for all your effort for all quarter million of us.

  • @jerelwade9973
    @jerelwade9973 Год назад +1

    I had the same problem with my 2005 Sierra 3500 4x4 Dually. The guys at AAMCO here in Cocoa, Florida went in pretty deep with the diagnostic. They found that one of the wires going to the TMC was supposed to have a 12v reference. Although it was testing hot, the voltage was lower than 12 volts. The fix wasn't to replace the TCM. Instead they found a 12v (key on, I think) source in the fuse box then installed a double stacked fuse holder in that slot then ran a wire from there to the TCM plug..
    They gave me a great price as well, $150 for diagnostics plus $150 for the rewiring, a total of $300. They also re-programmed both, my original TCM and the one I purchased from the salvage yard at no extra charge. Which is why I was there in the first place

    • @markpec
      @markpec Год назад

      Can you give me the info of who fixed it I’m in same shoes. My truck has TCM issues and is stuck in ga. I’m in central fl. Can’t get it home. TCM are in short supply

  • @REPOOCNITSUJ
    @REPOOCNITSUJ 5 лет назад +7

    Great video! I would love to see more with substitute loads for testing purposes. Your video on how you make the test lights was great... a good follow up would be on using them!!! Awesome as always.

  • @zx8401ztv
    @zx8401ztv 5 лет назад +2

    Great diagnostic and speedy repair :-D
    I would imagine that the faulty tcm may have been sending data at the wrong times and clashing with other packets of data from other devices on the same network.

  • @Lovechangestheworld1
    @Lovechangestheworld1 4 месяца назад

    Thank you. Learned a lot as I’ve having this issue right now and can’t solve it.

  • @CarlosGutierrez-fs9ql
    @CarlosGutierrez-fs9ql 4 года назад

    awesome video! my truck is in the shop right now the guys couldnt figure out why so many codes with 64k miles on it. my truck is doing everything the one you are working on is doing.

  • @CSkwirl
    @CSkwirl 5 лет назад +16

    I don't understand why these American cars have the ECU and other computer modules mounted in the engine bay and under the car where they're exposed to every possible thing bad. Why not put them under the seats, dash or footwells and protect them from the heat, water and salt? Is there some historical reason or they just do it on purpose to make everything fail?

    • @phprofYT
      @phprofYT 5 лет назад +5

      because that would make sense. They design these to be as cheap as possible to build (ACAPB).

    • @dB_944
      @dB_944 5 лет назад +9

      Ask a Passat owner why you don’t put the TCM under the seat. The sunroof leaks and fills it with water and ruins the TCM!

    • @CSkwirl
      @CSkwirl 5 лет назад +5

      @@dB_944 Should have bought a Toyota lol

    • @derrickodyes1934
      @derrickodyes1934 5 лет назад +6

      Cause wiring harness has to be longer can cause abrasion and faults. Also water can be floor so its not safe. Under dash is pretty full. If made correctly these parts should last in a dry not overly hot place under the hood.

    • @dB_944
      @dB_944 5 лет назад +1

      Thanks Scotty!!

  • @KLX1990
    @KLX1990 5 лет назад +11

    Seen this alot with allison 2000/3000 behind cummins engines. These "dimple" style heatsink tcm's have a high failure rate. This is exactly the sort of thing they do when they start to fail. They usually cause a no-start complaint as well. A lot of times if you pour cold water on the heatsink they will quit acting up. In my experience you'll typically get faults for tcm power input signal high and incorrect gear ratio. there is a newer updated style i think its an a59 tcm that has a redesigned heatsink and is far far less failure prone

    • @Bryan-Hensley
      @Bryan-Hensley 5 лет назад +4

      Looks like they would have learned from Ford's failures. We used to move their module to a cooler place.

    • @dB_944
      @dB_944 5 лет назад +4

      The A59 is the next generation TCM after the A40/A50. It is a better TCM. It’s the service replacement for the previous gen.

    • @tanis143
      @tanis143 5 лет назад +3

      Sounds like they are not using quality paste on the heat sink. I used to see this a lot with cheap computers. The chip would over heat and shut down the pc. Removing the factory paste, cleaning the heatsink and chip and putting good thermal paste on solved it. That cheap stuff will break down over time, leaving gaps that are not easy to see but causes less surface area contact and reduces heat transfer.

    • @fascistpedant758
      @fascistpedant758 5 лет назад +2

      I wonder if it isn't more a mechanical issue like a crack in the board or solder joints. Of course excess heat would exacerbate that too. Twisting the module might have been interesting also.

    • @robc8468
      @robc8468 5 лет назад +4

      @@Bryan-Hensley GM learns nothing from anyone I worked for a GM oem parts supplier the hubris of the purchasing, engineering and QA employees is unbelievable the corporate culture of GM is toxic at best.

  • @Paul1958R
    @Paul1958R 5 лет назад

    Eric,
    Great video. I dont think an GMC/Allison truck is in my future but I always love watching SMA videos! I could watch the eagles all day long too.
    SMA#1
    God bless
    Paul

  • @atschirner
    @atschirner 5 лет назад +1

    Thanks for another great video Eric. I had the same Issue on my 2011 2500HD. Money light and erratic shifting. Stealer mis-diagnosed shift solenoid pack and then replace the TCM.

    • @PLAYERMIKEY
      @PLAYERMIKEY 4 года назад

      Do you remember how many miles ?

    • @atschirner
      @atschirner 4 года назад

      @@PLAYERMIKEY 3 years ago at about 40k.

  • @marknguyen7231
    @marknguyen7231 5 лет назад +3

    Dad always taught me to never put my hand near a running belt and be gentle with my car. Eric O taught me whack it with everything you have and don't mind the belt. This is why dad never had a RUclips channel.

  • @halopersin
    @halopersin 5 лет назад +1

    When I worked at the gm dealer I had a few Tcm failures. I could’ve sworn there was a tab about it as well.

  • @zigz0911
    @zigz0911 5 лет назад +1

    Good one GM. Mount a sensitive electrical part on the hottest part and then put cooling fins on it......

  • @arthurfricchione8119
    @arthurfricchione8119 5 лет назад +1

    Good video Eric. Love those Bald Eagle shots 👍

  • @stoneblue1795
    @stoneblue1795 5 лет назад +10

    That trans control module was missing it's upper fastening bolt. Suppose someone has already swapped it or been messin with that one.... or it's been buzzin and vibratin cause it's held on with just one bolt and damaged it's little brain inside?

    • @73er-xy3ky
      @73er-xy3ky 5 лет назад +4

      They only have 1 clip/bolt . No upper bolt even though module has the hole .
      My 2010 LMM is same way

    • @franksrok5843
      @franksrok5843 5 лет назад

      there aint no upper fastening bolt. thing is held in with 1 plastic push pin.

  • @guyfromtheislands
    @guyfromtheislands 5 лет назад +6

    Another great video...BTW, it's freezing cold here in Hawaii, 72 degrees at night! Aloha

    • @kwils6685
      @kwils6685 5 лет назад

      @@NorthernCorruptionMonitor907 Lol For the past 4-5 days I've been thinking I wish I was in anchorage! Where I am in Minnesota the lows have been -12 to -18 and Fri - Sun they say -23 to -25. I was pretty surprised what a tropical paradise Alaska seems to be.

    • @kwils6685
      @kwils6685 5 лет назад

      @Bobby Brady Oh yeah that's sort of like here in the summer when it's 95 where I live if I drive into Duluth and the wind is blowing off lake superior it can be 20 degrees cooler than just a few miles out of town.

  • @bluethunder1951
    @bluethunder1951 2 года назад

    The TCM went on my 2012 LML in 2017 on the hottest day of the summer. I replaced it with a Motor Ops TCM, fully tuned for trailer towing, and now pulling heavy loads the transmission shifts sooner and has more torque.

  • @aleblanc3547
    @aleblanc3547 5 лет назад +1

    I can't decide if the video is better than the comments or the other way around, you got some hilarious subs on here Eric. I guess either way, I win. Thanks, Man!!

  • @scottstephens9334
    @scottstephens9334 6 месяцев назад

    Awesome video. We have doing the same thing. Sets P0708 after it warms up but PRNDL reads good.

  • @k0rndog93
    @k0rndog93 5 лет назад

    "Fixing a car with a hammer" Brings me to my days of my first truck back in high school. My poor old 78 Chivvy K10 is probably still traumatized, almost 7 years after I sold it lol

  • @joeashbubemma
    @joeashbubemma 5 лет назад +28

    LOL, there's a code for, "hell if I know".

  • @baxrok2.
    @baxrok2. 5 лет назад

    A hammer? Apparently, you sometimes fix them with a torch! lol That new Bosch is pretty darn slick. Thanks Dr. O!

  • @loz11968
    @loz11968 5 лет назад +2

    Cool video would like to see you try and tear an old one apart probably cracked solder joints inside the unit. Mounted to the radiator lots of heat cycles and vibration...

  • @Gmtail
    @Gmtail 4 года назад +2

    It would be really cool if you could colab with other RUclips guys that do component level repairs like jeffescortlx . Granted, once the module is broke it's done and a new one is out the door but the knowledge coming from seeing what actually went wrong would be invaluable.

  • @NicholasAndre1
    @NicholasAndre1 3 года назад

    I know some GMs have solder joint problems. With my 2000 Sonoma it has it on the ABS module. The pads crack and every time you go over a bump at whatever temperature. All you have to do is crack it open and resolver the pin pads with some solder that isn’t garbage.

  • @nbrowser
    @nbrowser 5 лет назад +5

    If it reports P0001. be aware that's the universal GM code for "I'm a General Motors Product, do not try to fix me, just send me to the junkyard". Seriously I used to be a GM guy...they QC has gone right down the toilet. Granted I still daily drive a '91 Buick Century with the bulletproof 3.3L and the 4T60E trans. But that was then, this is now and the quality just ain't there.

  • @nightmarecivic
    @nightmarecivic 5 лет назад +9

    I'd act up too if I was heated to death and hit with a hammer. Joking aside great work once again.

  • @dman9645
    @dman9645 5 лет назад +1

    Had same prob on mine 09 sle gmc 1100 canadian to fix nice to know what the issue is thanks Eric

  • @robstubeview
    @robstubeview 4 года назад +1

    Okay. Before any diagnosis of TCM of transmission. The first place to look is the wiring harness containing a hundred tiny wires tightly fitted over top any access to the lower part of the engine. What are the odds, some big fat arm pushed its way past the wiring harness and loosened just one of those tiny wires. If it did, your code reader is going to show failure of the communication between the TCM and the many, multiple, functions it communicates with every second. And, all it is, is a loose wire. I had a transmission shop tell me this repair would cost 1600.00 minimum and there would be no warranty. All it was, was a loose wire. Do you think the transmission shop knew the bad code was probably a loose wire? Of course. Do you think I would return to pick up my vehicle and the shop would say, hey good news it turns out all that was wrong was a loose wire and the bill is only 100.00? This is a warning to all the shops who think they can still dupe the customer. Be nice, be honest and you can have a good living. Be a creep and take advantage of vulnerable people, and it could be you asking me how much I want to make this go away. I was even offered a job. All it was was a loose wire. ;)

  • @paullecoursr.1751
    @paullecoursr.1751 5 лет назад

    I appreciate your presentation. You are First Class Technician.

  • @scuba422123
    @scuba422123 5 лет назад +10

    I wonder if this is cracked solder joints it fail the tap test that bald eagle was so cool!

    • @talon0863
      @talon0863 5 лет назад

      that's my guess too

    • @talon0863
      @talon0863 5 лет назад

      heat sink grease too

  • @mbhales
    @mbhales Год назад

    Reminded me of the old Plymouth Fury Police Interceptors we drove as part of a taxicab fleet. Bought at auction in Anchorage, Alaska. One night my new cab went to crap, so I limped it back to the shop. The mechanic there was surprised they let me take this one out because he said it "wasn't ready to go yet".
    So, he quickly unscrewed the computer module from the air cleaner housing (think big 400 cubic inch with a 4 bbl carb), took a harness he had ready-made, and bolted it over on the fender. Never had another problem with it.
    Yep, heat soak.

  • @gmsonly5087
    @gmsonly5087 5 лет назад +1

    Off subject here... WOW, I'm impressed - 2 OEM, as in they left the factory with those batteries. Batteries do not last that long over here, but the temperatures can hit 100* F in the summer. And yeah, we usually will not see ICE POSSIBLE...I just put a battery in a 2018 Silverado, which is not typical as I usually see about 4 years average life expectancy for batteries.
    Sorry for the distraction, now back to regularly scheduled program

    • @k0rndog93
      @k0rndog93 5 лет назад

      I work at a Chevy/Buick/GMC dealership. We're constantly needing to jumpstart brand new cars that sit for even a few weeks. Was in the negatives yesterday when we plowed. Had to jumpstart 5 brand new cars! Very annoying, especially when I'm trying to do my lot in a hurry. Even some new Toyotas have this problem, not as bad, though. Can usually let a Toyota sit for about a month before it starts to act unhappy. Newer stuff seems to have too many things going on even when the car's off, putting a major toll on the batteries.

  • @ranger02smith65
    @ranger02smith65 5 лет назад +1

    Ford Thick film ignition module had the same problem. They removed from the distributor to a heat sink where ambient air would keep it cooler. Think intel cpu's without a fan.

  • @e.miller8943
    @e.miller8943 5 лет назад +6

    How about some "brain surgery" on the transmission controler like on the Ford HVAC controller?

  • @mikehamilton4433
    @mikehamilton4433 9 месяцев назад

    Always great videos. Great teacher. Love the humor also.

  • @MitzvosGolem1
    @MitzvosGolem1 5 лет назад

    nice. Modules often get moisture in them. Put them in a refrigerator for a week will suck water out. A vacuum chamber also can pull out water from components. I fix cranes and man lifts Module s can cost a fortune. Cut some open and found water inside on a few. Desiccant beads absorb moisture also and I put the packets inside component if there is space .
    Good work Thanks

  • @publicmail2
    @publicmail2 5 лет назад +1

    Probably ringed solder pads on a connector, very intermittent with temperature and vibration.

  • @Arnold7221
    @Arnold7221 5 лет назад

    Another great trouble shooting video, using tools of the trade, using experience, logic, latest computer analyzers, and a calibrated hammer. I am sure the hammer operator was certified. Good find with the hot soaking.

  • @sabergermd
    @sabergermd 5 лет назад

    Just clicked the Amazon link for the tool. I'm glad my coffee was cool!

  • @burtpilon1735
    @burtpilon1735 5 лет назад +1

    Your neck of the woods is beautiful ... Florida never snows and nothing but flatlands... kinda sucks

  • @bizbot1655
    @bizbot1655 5 лет назад +4

    Hey Eric O.- Do you ever get in 2000-2005 Chevy/ Silverado/GMC trucks with the infamous common brake and ABS light on issue? That would be an interesting problem to cover in one of your videos.

    • @itsjojo4
      @itsjojo4 5 лет назад

      Id love to see that too!

  • @bigd341
    @bigd341 5 лет назад +3

    Good morning Eric . Love your videos !! Love the plans of attack that you take in diagnosis problems. But I am just wondering if using a heat gun rather than a torch might have been better ?? Awesome channel love the interaction with mrs O . I am just a self taught shadetree DIY but i figure if it's going to get screwed up fixing it I can do that !! I have learned a lot from your channel !! Thanks hope your day is a great one !!😊

    • @ToXSicK1340
      @ToXSicK1340 5 лет назад +1

      I was thinking the same thing about the heat gun when the torch came out. lol …… I guess as long as your careful and know what your doing (Like Eric Does) either will get the end result you're looking for.

  • @slowride55
    @slowride55 5 лет назад +1

    How many codes would a GMC chuck if a GMC could chuck codes?

  • @tonychandler8908
    @tonychandler8908 5 лет назад

    I love watching your videos I have learned so much from you I have been a mechanic for 43 years on big trucks Peterbilts

  • @cumminsdiesel112
    @cumminsdiesel112 4 года назад

    These trucks are notorious for the plugs to the tcm vibrating loose and causing intermediate codes. Gotta unplug them and reseat the pins to ensure a solid connection. I see that 9/10 times with people complaining about hard shifts and other weird issues.

  • @xx3868
    @xx3868 5 лет назад +2

    Love your videos and you have so much patience for these things and probably have cars banking up outside to be fixed haha. I would just pull it apart and check the solder traces and any heat sensitive areas/simple loose wire or leaky input diode from age as these type of electronic issues can drive a tech like me nuts as its "intermittent" the worst words a tech want s to hear. Your skill in finding the problem sets you apart from the rest of the "pros" in your town that cant. Sometimes just a quick substitution (dirty word yes) and guarantee to the customer to bring it back if it plays up again no charge as these ones can put you in the mad house chasing down the failure on these more and more complex cars that only run if the computer is having a good day!...So nice to just run a hot wire from battery to coil, but those days are long gone.

    • @robc8468
      @robc8468 5 лет назад

      Aren't those modules filled with some kind of waterproof goo?

  • @ToXSicK1340
    @ToXSicK1340 5 лет назад

    I LOVE My Dirty-Maxx! Thanks for the Duramax Video Eric.... Only one year off from mine (08). Would love to see more Diesel content if you have the chance, Thanks again Sir!

  • @bobl78
    @bobl78 5 лет назад

    what have we done wrong he´s refusing us to have brake cleaner and welcome back to sma .-)

  • @davidmorrill2943
    @davidmorrill2943 4 года назад

    Glad to see your bald eagles. They are making a great come back

  • @AnonYmous-qg4ph
    @AnonYmous-qg4ph 5 лет назад

    I'm diggin the lampshade on the test light👍

  • @240sxxxvids
    @240sxxxvids Год назад

    Thanks for the video! I really dig your test light btw, going to make one myself !

  • @Al-BMWM550Ix
    @Al-BMWM550Ix 5 лет назад

    Great video. At one point my ears thought my video switched to the Flat Rate Master 😜

  • @SteveLowe65
    @SteveLowe65 5 лет назад

    I love when plan B means fire is involved.

  • @jonathanford8217
    @jonathanford8217 5 лет назад

    Those Allison modules tend to do funny things when they heat up with age. They’re the same modules I see in the International trucks. Just did one a couple weeks ago. They should send an updated module.

  • @barryktm450f
    @barryktm450f 3 года назад

    Great video Eric, today my truck slammed in to 3rd gear when i was pulling my camper, and it will not come out of 3rd gear, but you can shift it to park,reverse low i will try it in the morning when it cools down. I have a 2015 GMC. Thanks for the vid.

    • @royalevan7766
      @royalevan7766 2 года назад

      Did the tcm replacement fix your issue?

    • @barryktm450f
      @barryktm450f 2 года назад +1

      @@royalevan7766 I bought the after market one.

    • @royalevan7766
      @royalevan7766 2 года назад +1

      @@barryktm450f and it worked?

  • @lexmaximaguy8788
    @lexmaximaguy8788 5 лет назад +21

    Looks like the hammer fixes everything......especially on russian space station.

    • @jasonc.4683
      @jasonc.4683 5 лет назад +1

      🤣🤣🤣🤣 dude that's so funny

    • @vivillager
      @vivillager 5 лет назад +4

      Russian, American, Mexican, doesn't matter, it's all made in Taiwan

    • @nightmarecivic
      @nightmarecivic 5 лет назад +2

      What is this the movie Armageddon

    • @ToXSicK1340
      @ToXSicK1340 5 лет назад

      @@vivillager Ya.... But NOT that Bad Ass Bald Eagle...… 'MERICA"!!!

    • @vivillager
      @vivillager 5 лет назад

      ​@@nightmarecivic, "I am the only certified astronaut, and I am saving your American tush!" Sorry, couldn't resist.

  • @jounatherton7294
    @jounatherton7294 5 лет назад

    the module was just made to brake, the internal electric parts baked from heat, all the module needed was a proper heat sink or a built in 12v fan .
    made to brake ....
    brilliant video cheers ... jj uk london

  • @mattsez2879
    @mattsez2879 5 лет назад

    I remember back in the day, when i was but a wee little wrench, my father standing in the drive way....hood open, and yelling to no one.."" ALL YOU NEED IS A CARB, A WATER PUMP AND AN ALTERNATOR.....EVERYTHING ELSE IS JUST SOMETHING TO BREAK "" I used to think to my self....wow, dad is so old fashion. But some times when working on a newer car, I do find my self wishing for a time when things were just alittle more simple

  • @rickb8808
    @rickb8808 5 лет назад +1

    -6 here in Pa. mountains. 1/2" of ice running on generator power. Gotta love winter.

    • @daviddelle774
      @daviddelle774 5 лет назад

      Richard, what part of PA? And, are you related to the "French Fry" Brickers?

    • @tanis143
      @tanis143 5 лет назад +1

      Yeah, I love the scenery in the north east states, just don't want the winter that comes with it. We don't get much of a winter here in Oklahoma, but the land is as flat as a board with a few minor hills here and there. Summers are hotter than up north though, for us 85 degrees is a cool day. We don't complain until it gets around 95 and up with the humidity in the high 70's or more.

    • @daviddelle774
      @daviddelle774 5 лет назад +2

      @@tanis143 And "breezy " to you guys is when the wind is only blowing at 50mph. ;)

    • @tanis143
      @tanis143 5 лет назад +1

      @@daviddelle774 To quote Owl "Just a mild spring zephyr"

  • @joehomanick
    @joehomanick 5 лет назад +2

    Hell yea good morning mr and miss O.

  • @TheCowgirlNiamh
    @TheCowgirlNiamh 5 лет назад

    Great job Eric! Pays to have experience ☺️

  • @airratchetjockey7605
    @airratchetjockey7605 5 лет назад

    Some of the dirtymaxs had a issue with a certain brand belt building static electricity and then discharging directly on the TCM.

  • @derrickodyes1934
    @derrickodyes1934 5 лет назад

    Tcm has solder migration and makes contact between soldered terminals when solder expands when hot

  • @glenjamindle
    @glenjamindle 5 лет назад +5

    Holy crap. $5k for that scan tool?! Why can't there be more affordable options?

    • @gearheadautomotivel.l.c.5476
      @gearheadautomotivel.l.c.5476 5 лет назад +7

      @Glen Atchison There are more affordable options but everything has a trade off. Bosch and Snap On tools will always cost more because they're paying the manufacturers to license use of their software. Autel and Launch make some more affordable products but part of how they can is where they're made, less support, and the fact that they seem to have found a loophole in the licensing. That's part of the reason auto repair has gotten so expensive. The individual investment by the technician alone is through the roof, not to mention the shop's for big equipment. If you're a diyer or a tech looking to grab their first scan tool, Launch and Autel have some units with pretty comprehensive coverage for a grand or less.

    • @ToXSicK1340
      @ToXSicK1340 5 лет назад +2

      And that's just for the Tool...… Haven't even disused the licensing cost's! (Just Crazy if you ask me!)

    • @robc8468
      @robc8468 5 лет назад +2

      I bet the return on investment in a professional shop like SMA and is probably 6 months to 1 year this is capital equipment that can be depreciated. The era of shade tree repairs is pretty much over. An oil change air filter and possibly a brake job is about the end of the line for DIY home auto repairs. My tools are used lawn mower/snow blower repair and maintenance. I do have a $40 code scanner so at least I have some idea what the codes are before I bring my cars into the shop.

    • @burtpilon1735
      @burtpilon1735 5 лет назад

      Also the ads 625 is not just a scan tool the specs are awesome !

    • @leedress2187
      @leedress2187 5 лет назад +1

      and you need the GM Subscription to program the module. That's not cheap either.

  • @alanmatthews5949
    @alanmatthews5949 5 лет назад

    On our next model the will attach it to the exhaust manifold because we can, GM!

  • @duramax4life720
    @duramax4life720 3 года назад

    People laugh at the claw hammer but the rubber oval handles or wooden handles work great for pushing the pistons back in ur calipers. I stick it in the caliper with the old pads and rotate it like an accentric and it pushes the pistons back in easy👌

  • @PaulyD0859
    @PaulyD0859 5 лет назад

    If I didn’t still use it for the exact thing you were using a torch, I’d send you my Blue Point YA-862 Choke Tester. Hot air out one side, cold out the other. A few months ago, I actually even used it to test a choke on a Holley. 😎
    I still see it on eBay, sometimes. A lot safer than a torch or heat gun.

  • @robburke8867
    @robburke8867 5 лет назад +2

    Another great video my friend!