GMC Yukon HVAC Blower Motor Won't Turn On

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  • Опубліковано 27 гру 2024
  • How to test the blower motor switches, blower resistor (which is a module on this one) and the blower motor itself will be shown in this video.
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КОМЕНТАРІ •

  • @wtfman5313
    @wtfman5313 7 років тому +30

    Paul Danner is a one in a million instructor. I didnt know anything about automotive controls a year ago, now I troubleshoot my own vehicles because SD Premium opened up that world to me. Thank you Paul!

    • @ScannerDanner
      @ScannerDanner  7 років тому

      Thank you for this comment! That is awesome to hear.

    • @mohammedeshag3866
      @mohammedeshag3866 7 років тому

      m

    • @mohammedeshag3866
      @mohammedeshag3866 7 років тому

      This is a right diagnoses and helpful.But there is still my be a soldiering problem within the bowler Model or a losing harness.

    • @ScannerDanner
      @ScannerDanner  7 років тому

      I did mention that and also that the harness was fine.

    • @SyedZaidi-r7l
      @SyedZaidi-r7l Рік тому

      @@ScannerDanner,

  • @Orell_Dee
    @Orell_Dee 2 роки тому

    That was a textbook diagnostic you did there. I'm new to the channel but would love to learn the ways of the Jedi. Electrical diagnostic that I could understand means that I could also learn how to do this stuff myself. That would make my family proud.

  • @2Jeezuzisreal
    @2Jeezuzisreal 8 місяців тому +1

    On my 05 Yukon the wires fried 2 times.
    bypassed that resistor you're holding. Eliminated it.
    I use the heavier 10 wire and ran it to the battery but decided to connect into that red box under the alternator. Used a 30 amp fuse. I bought a heavy switch mounted on the dash.
    Has only one speed.
    But I also have the rear heater variable. I've had unusual amount of problems with the actuator doors not opening or closing properly so I in the back I opened a hole through the sidewall and permanently put in a screw to hold the flapper door up in the heat position. Since my AC doesn't work anyway

    • @ScannerDanner
      @ScannerDanner  8 місяців тому

      The wires will "fry" when you have connection issues. Resistance equals heat.

  • @akawireguy1197
    @akawireguy1197 7 років тому +2

    You are so blessed to have a readily available camera man you already know how to communicate with. Having a living breathing mind behind that lens leaves you free to teach.
    I bet a close inspection of that board under a good magnifying lens would reveal just what you said. Thank you lead free solder.

  • @madmotorrepair1748
    @madmotorrepair1748 7 років тому +1

    Every day I go through preliminary steps and think of the variables to a situation to carry out a professional diagnosis, and it has made me more successful as a Semi Tech. I would never have known these steps if it wasn't for Paul. Learning from Paul has improved my life, and others that I have help along the way. Thank you.

  • @billk5727
    @billk5727 7 років тому +2

    Paul Danner is an awesome instructor. I've been a member of the Scanner Danner Premium channel since early 2015. You can't beat it!
    Bill K

  • @Travelingman-1980
    @Travelingman-1980 7 років тому +5

    Getting older is a bitch, we all need readers one day. Thank you Calib!

  • @pedrovaldez9559
    @pedrovaldez9559 5 років тому +6

    Wow...this is a great video! This guy is very interesting! I usually skip through all the unnecessary blah blah blah, but this guy here makes you want to watch and listen through it all. Great instructor! Best video I've seen yet concenring this subject! And I don't know anything about fixing cars! Lol!! This videos helps! Thanks man!!!😎👍

    • @ScannerDanner
      @ScannerDanner  5 років тому

      what a great compliment! thank you so much

  • @swfloridacarguy1987
    @swfloridacarguy1987 7 років тому +3

    Thanks Paul and Caleb. Being a old and former GM tech you two are keeping my mind very active with your channel. Also appreciated the Dodge Dakota vlog and the diagram you did at the end of that vlog...

    • @MechTech5000
      @MechTech5000 Рік тому

      I have power and ground to the module and ground from the module to the blower motor but no power to the motor. Also when I add ground and power to the motor it doesn’t run. Does that mean it beds both motor and module? Or could the blower motor be being bad cause the module not to provide power?

    • @sergioflores7169
      @sergioflores7169 Рік тому

      I have an issue with my blower module. I was told that if the blower module goes bad it can take out the blower motor and vice versa. If the blower motor has too much resistance ( a worn bushing maybe) it can damage the module. One should replace both at the same time, more so if they are original items on an older vehicle.

  • @actifenpleinair3784
    @actifenpleinair3784 10 місяців тому

    Wow, Great break down in simple terms, yet covering all the bases! I was able to pop open the cover and simply unplug ad plug the connector with key off, key on and the system works again. going to order a new controller if it ever happens again, will be a 5 minute fix! $21 at Rockauto or 40's locally, not a big worry for now!

  • @pichopalomares3517
    @pichopalomares3517 4 роки тому +2

    Thanks for the video, my issue was on the plug that connects to the blower. Same thing just unpluged and pluged it again and it started working like a champ.
    *same type of suv*

  • @matthewcohen3521
    @matthewcohen3521 2 роки тому

    Love that you overlayed the "sillyscope" to demonstrate the pulse width modulation, love a good technical demonstration.

  • @NoName-be5ir
    @NoName-be5ir 6 років тому +1

    Well no fancy gadgets, but seeing you plug that back in and bam working.. so first I found I had power at red and purple. Then I unplugged each one and bam working.. plug at the blower is bad. Blowing cold!!! Thanks , but keep us dummies in mind with only simple gadgets. Great video i learned something about the functions and the fancy tool did a good job showing the pulse from that little wire.

  • @jeffsummers7242
    @jeffsummers7242 5 років тому +1

    Replaced the module/resistor. Exactly what I needed, just watch the $50 at autozone, $30 on amazon. Mine old one had corrosion on the top fins, but at first blower would stop, and come back on with a whack, then wouldn't anymore, but would when connector wiggled a little, but not stay on. Thank you UA-cam for helping fix half of my problems.

    • @jeffsummers7242
      @jeffsummers7242 5 років тому

      Come to find out, module wasn't bad, but found wire connector was bad where it connected to fan. New wire bundle is $60at dealership.

    • @brandonueki4342
      @brandonueki4342 3 роки тому

      @@jeffsummers7242 same here. I cleaned the connector with electronic spray. Now it’s working again. Next time, I’ll replace the entire wire harness like you.

  • @cwj9202
    @cwj9202 7 років тому

    I have to complement you on the manner in which you explain the two powers and grounds and one signal wire. With old guys, I use a relay analogy, but I would say your method is way way better. Keep up the great work.

  • @jordydereus
    @jordydereus 7 років тому +4

    I am having dejavú. Pine hollow auto diagnostics had the same video!! good vid paul. we love you. keep up the good work.

    • @ScannerDanner
      @ScannerDanner  7 років тому +1

      Cool man. Tell Ivan I said hello! I don't have time to watch UA-cam videos, I don't even watch my own brothers videos.

  • @ralfsautomotive
    @ralfsautomotive 7 років тому

    I'm going to drop by there on of these days when I am up that way. I just like the way you go about teaching this stuff to young and old.

  • @mbarry9737
    @mbarry9737 6 років тому +5

    Love the superimposed scope over the video, great editing!

    • @koolpoll86
      @koolpoll86 3 роки тому

      Augmented reality! Rare to see this

  • @theadventuresofjavier8698
    @theadventuresofjavier8698 7 років тому

    Good morning Paul. That GMC is a diagnosis techs dream/nightmare. Always happy to see a vid from you. Cheers mate.

  • @nutsandbolts7407
    @nutsandbolts7407 2 роки тому

    Wow I definitely came back to watch this and it confirms that I did diagnose my neighbors Yukon correctly..at least in the right direction....the voltage does change(I checked with a multimeter) as I raise and lower the fan speed...so I believe the resistor is bad.....thanks for the great help again!!!! (Blower stays on without key)

    • @ScannerDanner
      @ScannerDanner  2 роки тому +1

      Good call on that module. There is no input we need to worry about when the fan module keeps the blower on without an ignition feed. Because everything is powered down. Make sense? Good job on checking your blower module (resistor) inputs though. Thank you!

    • @nutsandbolts7407
      @nutsandbolts7407 2 роки тому

      @@ScannerDanner yes since it stays on....we know that it has all the inputs needed to function? Power,ground,signal etc??

    • @ScannerDanner
      @ScannerDanner  2 роки тому +1

      @@nutsandbolts7407 it tells us the driver is shorted with almost certainty

    • @nutsandbolts7407
      @nutsandbolts7407 2 роки тому

      @@ScannerDanner oh ok.. awesome great help as always! Thank Yu for your knowledge....looks like il be changing a module tomorrow!

  • @radmilakrejci8581
    @radmilakrejci8581 3 місяці тому

    absolutely great video explaining how does blower module operates and testing with scope.

  • @evantac
    @evantac 7 років тому

    Your video is getting more and more interesting,like your meter reading and the waveform showing together while you were explaining,nice.

  • @rodneymccrea465
    @rodneymccrea465 2 роки тому

    Just done one on a 2002 Chevrolet Impala 3.4 liter, it was a motor resistor, blower motor was good

  • @bioticvictuals4999
    @bioticvictuals4999 2 роки тому +1

    Hey Paul, I see 3 comments with no answer...(also my question) What trouble shooting steps would you take if the moduel is NOT getting power? All fuses are good.

  • @ekimbrough1413
    @ekimbrough1413 9 місяців тому

    Thanks Paul and Caleb! Another great vid!

  • @dassme1
    @dassme1 7 років тому

    Yoo. What's up. Danner that noise you here is actually a mini fan up in the headliner that looks like a mini speaker/microphone . It is a fan that is all clogged with dust great vid danner !!!

    • @ScannerDanner
      @ScannerDanner  7 років тому

      someone else said that too. Thank you! I'm sure I'll get to hear about it 20 more times :-)
      Such is the world I live in now.
      Seriously though, I do appreciate the correction.

  • @murphytoadster9864
    @murphytoadster9864 Рік тому

    Just started watching the video but my question is the rear passenger ac control switch. Not the front ceiling control for the rear. There is a little screen that has the ac and radio control buttons that the rear passengers can use. But my rear fan won't turn on. It was working one day and cut out , but started working again and then by the time I got home it stopped working for good

  • @billyyoder8171
    @billyyoder8171 6 років тому

    Hi Paul. Just revisiting this PWM control. By the hvac control head pulling the signal to ground (higher duty % to ground = higher speed signal request / lower duty % to ground = lower speed signal request), does this mean the blower speed controller (near the blower) is the one who supplies the signal voltage to the hvac control head. Then it's the hvac control head job to pulse that voltage to ground and on the other end, the blower speed controller interpretation of that pulse width/duty % is the requested speed? Then the blower speed controller output pulses the blower ground circuit to ground to vary the blower speed? Thank you. Bless you and your family.

  • @sailorbob74133
    @sailorbob74133 4 роки тому

    Have any video's on testing a traditional divider resistor? I've got one where the blower motor was already replaced by someone else, the fan works intermittently ( will cut out after a few hours of operation ) and there is a 200 - 300 ma parasitic draw on the A/C circuit...

  • @DaveSender66
    @DaveSender66 7 років тому

    Another great vid Paul!!! I'd like to thank you for helping me troubleshoot a friends crank no start. Your vid on GM fuel pump relay testing was key!! Thank you for the incredible good energy you spread through the universe my friend !!!!!!

  • @andyd8185
    @andyd8185 3 роки тому

    thanks Danner (Paul) you saved me some time and money... keep up the great videos .. Cheers from Canada

  • @pdady21
    @pdady21 3 роки тому

    Any idea why on a suburban manual rear ac blower, there is power to the blower, new resister, but when plugged in to the motor/load the power drops to zero?

  • @brodericklancaster7237
    @brodericklancaster7237 Рік тому

    You can tell you are a dam good instructor, thanks

  • @insomniacinsomniac8172
    @insomniacinsomniac8172 3 роки тому

    Paul, thanks a lot for what you and Caleb are doing! I'm not even a mechanic, I'm just an IT guy, who's living overseas and like to repair his own cars, but the foundations and logic you teach are incredibly useful to me!

  • @arinhiwa4017
    @arinhiwa4017 Рік тому

    Well-done
    You could explain the GMC blower issues well , and diagnose the car problem in detail .
    TQ Instructor .

  • @mototechno834
    @mototechno834 4 роки тому

    Hi Paul...Can we do bypass test by giving ground on the wire using test light???? Second thing, as we increase the fan speed, the ground value keeps decreasing, like u said better and better ground. Paul i want to know how is it possible to change ground value to better and more better??? is this possible by using resistors??? Plzzz advise. Thank you.

    • @ScannerDanner
      @ScannerDanner  4 роки тому

      I need a time frame please. For the ground part you are talking about.
      Also, you cannot use a test light to do a bypass test if it is a higher current circuit. The test light will not support the current flow

  • @davidyork751
    @davidyork751 6 років тому +1

    I know what happens, just figured it out with all of them, the blower motor shaft gets rusty and causes the bearing to rust and shaft then puts a lot of pressure on the motor and causes the resistor to burn out or just shut down the motor completely, I just fixed it by adding a little bit of 20 weight oil to the shop to turn the remove the blower and turn the blower upside down with a squirrel cage is facing down for a little bit of oil in there at a time and keep spinning it and spin until it comes free and all fixed, so there isn't a sealed bearing in there and the condensing from the air conditioner causes moisture and rust everything up.

  • @juanitogaspar8728
    @juanitogaspar8728 4 роки тому +1

    Thanks for your videos! I had the same issues with my Avalanche. You saved me $$$$

    • @iameshu1146
      @iameshu1146 4 роки тому

      Same here but I replaced same module still doesn't work. Any suggestions? 08 Avalanche. Thanks.

  • @stephenmarshall5302
    @stephenmarshall5302 6 років тому

    Well done cailub. Sorry if wrong spelling. PAUL although this video is a fairly simple diagnosis I enjoyed it your the man. Keep it up

  • @mikehenderson2389
    @mikehenderson2389 3 роки тому

    Hey Dan I'm sure uv found out by now that the little thing in the headliner is not a mini speaker at all, but it is a little tiny squirrel-cage motor that draws ambient air into the cage which surrounds a little thermostat type sensor. Its part of the auto climate control system

    • @ScannerDanner
      @ScannerDanner  3 роки тому

      I have, thank you! Oh and my name is Paul Danner, thanks!

  • @JeffBrown1966
    @JeffBrown1966 6 років тому +1

    Sure you know by now but that is not OnStar making noise that you pointed to, it is a fan that measures cabin temp for the HVAC

  • @daleaustin1969
    @daleaustin1969 4 роки тому

    Awesome video 100% accurate and articulate step by step instructions for anybody that's weakness is auto electrical fixed mine in minutes than you Dan!!

    • @ScannerDanner
      @ScannerDanner  4 роки тому

      Thank you!
      BTW my name is Paul Danner 😉

    • @daleaustin1969
      @daleaustin1969 4 роки тому

      @@ScannerDanner all apologies.. thank you Mr. Danner

    • @ScannerDanner
      @ScannerDanner  4 роки тому

      All good, I get that a lot

    • @daleaustin1969
      @daleaustin1969 4 роки тому

      @@ScannerDanner soooo (exact same truck/symptoms as this video) and blower quit AGAIN... new module (per video) & fan spins instantly when bench tested w/ car battery. am i to assume the actual $300 hvac controller is the only thing left??

    • @ScannerDanner
      @ScannerDanner  3 роки тому

      @@daleaustin1969 not sure if you are still fighting this or not, but I would look at the parts you replaced first. Electronic parts are junk these days

  • @martyhart135
    @martyhart135 2 роки тому

    How do I know if it’s the switch located up roof or fan actuator in the rear???

  • @HomieHektor
    @HomieHektor 7 років тому +1

    Beautifully edited and explained, what program do you guys use to edit and over lay the voltages on the screen? 🎥💨

    • @ScannerDanner
      @ScannerDanner  7 років тому +1

      Cyberlink Power Director 15. If I could do it over, I would be using adobe premier. I just don't want to learn another program right now and this one serves it's purpose.

  • @MikeSmith-wl1bz
    @MikeSmith-wl1bz 3 роки тому

    I had this problem with an 07 Silverado. When I unplugged the fan connection at the module and plugged back in it worked. Turned out to be the connection at the fan motor. It had heated the plug and deformed it. I replaced the wire to the motor and no more problem.

  • @Blazer02LS
    @Blazer02LS 7 років тому +14

    That's not the onstar speaker, that's the interior temperature sensor aspirator for the automatic control HVAC system. The noise is the little fan motor in it that's blocked with crud. It's a thermistor with a fan pulling interior air over it. One common symptom of it's failure is heat output stuck at 80+ degrees with no heat below that.

    • @ScannerDanner
      @ScannerDanner  7 років тому +1

      ah great tip! Thank you

    • @Blazer02LS
      @Blazer02LS 7 років тому +3

      If the fan is still working you can sometimes pop the grill off and hit them with some air and blow the fan clean enough that it will start working again. Easier than pulling the headliner down to get in there. Every GM truck with the automatic HVAC system has one.

    • @SmittySmithsonite
      @SmittySmithsonite 7 років тому +2

      Ahh yeah - got the same noisy fan in mine too. Was just going to tell Paul about this.
      Of course, GM no longer makes the part if you need it! At least that's what I found last time I checked. Real nice of them to stop making parts on a vehicle that's barely 10 years old ...

    • @Blazer02LS
      @Blazer02LS 7 років тому +1

      ACDelco 22834330 should let you find one. That fits 2000-2014 GM trucks that use the aspirator. It's the current replacement with the latest revisions.

    • @SmittySmithsonite
      @SmittySmithsonite 7 років тому

      Thanks Blazer! I'll be writing that down on my maintenance folder. :)

  • @mikeoneill7360
    @mikeoneill7360 7 років тому

    Sorry Paul, I was confused, meant to say if it has power and ground, module/resister is probably bad, which is a very common issue on the GM fleet where fan speed is not working on all settings.

  • @kevinedward1234
    @kevinedward1234 7 років тому

    Paul, I just had a 2011 silverado come in the shop for a blower inop customer complaint, I did the same checks, and I found the blower motor wire harness melted @ the blower motor, so it is getting a blower motor and wire harness, I also unplugged the blower motor wire harness @ the blower control module and plugged it back in and the blower came on, so I wiggled the wires @ the blower motor and could make the blower go on and off, so I unplugged the harness @ the blower motor and it was melted. Did you find the same issue on this vehicle?
    Great video!!

  • @davesage9190
    @davesage9190 7 років тому

    Understanding that you don't really have the time or financial incentive to do so - but it is really satisfying to actually fix one of those modules. As you pointed out it is likely a cracked solder joint and the symptom pointed you to it likely being the motor ground connector pin. Just take a minute or two and get the big soldering iron (or gun) out and reflow the solder on the pin connections (and everything else nearby) on the pc board, adding a bit of solder to make it flow nice. It's a good feeling when you can save your customer - what? - maybe $100 and if it's your own vehicle, your own money. A feather in your cap too (and maybe future business) if you can tell the customer you saved them the money too.
    (Sorry I guess I've spent too many years in the electronics business fixing equipment to component level ) :-) I can understand if your industry has a different outlook.
    Good troubleshooting technique Paul. Thanks. I enjoy your videos.
    davesage.ca/

    • @ScannerDanner
      @ScannerDanner  7 років тому +1

      I'm totally with you Dave but what you didn't see in an edit was I was not prepared to fix this one. My eyesight is not what it used to be and I definitely needed a magnifying glass to even attempt it. Then the only soldering gun I carry with me is a butane one that is not meant for such small soldering.
      Thanks for watching! Next time maybe, I'll be able to do the component level fix. I wish I could have too

    • @davesage9190
      @davesage9190 7 років тому +1

      No Problem Paul. It wasn't meant to be a negative comment. More meant to let others know that there is a possible further step that can add great satisfaction if successful. Especially when it's your own piece of equipment and money your saving.
      My home furnace quit a few years ago and through a similar process I traced the problem to a cracked solder joint on the controller circuit board. Seems they thought it was a good idea to solder a heavy transformer onto the circuit board in a furnace that is continuously vibrating. Soldered it up and away it went. The alternative was to try to find an obsolete replacement controller or a new furnace for a few thousand bucks. Made me feel good to fix the whole problem.
      Thanks Paul. Keep up the good work.

    • @ScannerDanner
      @ScannerDanner  7 років тому

      I didn't take it as negative at all Dave. Thanks for the comment! I agreed with it

  • @mporter6775
    @mporter6775 7 років тому

    The fins or poles are to detect the temperature as the air flows over them so it can be adjusted automatically when on auto not cooling fins.

    • @ScannerDanner
      @ScannerDanner  7 років тому

      You sure about that? There is no feedback circuit from the blower module to the climate control panel. This blower module does no decision making on it's own as far as temperature of the air or blower speed.

  • @arfk1986
    @arfk1986 6 років тому

    Mr. Paul, how were you able to draw a LIN signal ranging from zero to 4 volts at fan maximum speed? What I knew about LIN voltage that it only ranges from slightly above zero (0.5) volt up to slightly under battery voltage (11.5). Thanks for your time and effort. We really appreciate that.

    • @ScannerDanner
      @ScannerDanner  6 років тому +1

      This signal was not part of a network on this model

    • @arfk1986
      @arfk1986 6 років тому

      ScannerDanner wow. I dont know how the life could be without you.

  • @scramshem613
    @scramshem613 4 роки тому

    Great video, easy to follow. I was able to replace mine in about 20 minutes. Except it didn’t fix my problem but I did notice that there was some blue stuff running out around the old one.
    Is there something else I need to do or could be another issue I don’t have a blower for heat or cool. Thanks so much
    .

    • @ScannerDanner
      @ScannerDanner  4 роки тому

      blue stuff as in corrosion on the terminals?

  • @francisobey325
    @francisobey325 2 роки тому

    Good job sir, pls what materials do I need to be a good scanner like you sir

    • @ScannerDanner
      @ScannerDanner  2 роки тому

      www.scannerdanner.com/join-scannerdanner-premium.html
      This will be the best spent $11 a month you will ever find in this field. I offer a 14 day free trial. Check it out!

  • @99rattle
    @99rattle 7 років тому

    Hey paul , nice to see you working over top of your $2 scantool to remove module :) Nice vid as usual , very informative, keep um commin

  • @wyattoneable
    @wyattoneable 7 років тому +1

    Great stuff Paul. I need reminders in electrical theory and these videos are doing just that.

  • @mercedesbenzs600bash
    @mercedesbenzs600bash 3 роки тому

    How reliable and durable are these trucks with the DOD/AFM system and have you had any problems with the lifters ???

    • @ScannerDanner
      @ScannerDanner  3 роки тому

      junk if you ask me and useless as $#@% in a mountainous region like where I live

  • @vitamulten1395
    @vitamulten1395 4 роки тому

    Top notch vid. Was wondering if you are going to autopsy the module at some time?

  • @giovannisantiago3001
    @giovannisantiago3001 Рік тому

    Very detailed and precise description. Awsome explanation. Ty!!

  • @ruthlyons54
    @ruthlyons54 5 років тому

    I have a 91gmc G2500. I replaced resister blower motor and dash module. Still no power to it. I previously took out all the ac..... did I somehow stop a circuit ground? My door locks are also clicking on and off, even without the motor on, is this connected. I feel I must have a bad ground somewhere. I’m an older female and this is making my brain bleed! Will appreciate any thoughts you have to share.

    • @ScannerDanner
      @ScannerDanner  5 років тому

      You need a good wiring diagram for your system. Door locks clicking on and off are also not good symptoms (bad ground or low voltage on a feed circuit)
      eautorepair.adtrk.biz/?a=10817&c=24&p=r&s1=

  • @drewsky1967
    @drewsky1967 6 років тому

    I have this same exact problem and switched out this module/ resistor and still same thing. Any suggestions ?

  • @deborahsmith7320
    @deborahsmith7320 4 роки тому

    My ac does not work at any speed but I can faintly hear the blower motor trying to turn on under passenger dash would my blower be bad or the resistor if so how would I be able to tell symptoms from the blower from the resistor also could the hvac over drivers head it has a small grill affect why no access rear or front works.

    • @ScannerDanner
      @ScannerDanner  4 роки тому

      voltage testing at the blower and resistor are needed to answer that

  • @leaguecitysmokeshow8088
    @leaguecitysmokeshow8088 5 років тому

    Very informative. What size socket did you use to remove the module bolts? I tried using my 6 mm but too big. Thanks again!

  • @wysetech2000
    @wysetech2000 7 років тому

    Very good instructional video, Paul. Well done by you and Caleb.

  • @vt2704
    @vt2704 7 років тому +1

    I love when there's a possibility of circuit board repair. 👍 video.

  • @jamesmays6826
    @jamesmays6826 2 роки тому

    Great video the impala is ground side switch like that one

  • @rodneymccrea465
    @rodneymccrea465 2 роки тому

    The module was good all fuses was good again it was a resistor on this particular car easy fix.

  • @ozzstars_cars
    @ozzstars_cars 7 років тому +1

    New module and shes blowing like a champ. Do they sell those at the mall? I need to buy my wife a present.

  • @alexandercabral1396
    @alexandercabral1396 5 років тому

    I did this exact test with my verus pro and got the same results. I changed the module and it fixed the issue. 2 days later stopped again, so I figured defective part. Got another one and worked great for a day and stopped again with same results. Can’t figure out why the module keeps dying.

    • @ScannerDanner
      @ScannerDanner  5 років тому +1

      Too much current from the blower motor burning it out, or you have a connection issues right there at the module.

  • @alphaomega687
    @alphaomega687 5 років тому

    Glad I've just so happen to come across this video very informative and instructional what kind of scanner are u using just in case u already stated it and I missed it

  • @mobilemechman
    @mobilemechman 7 років тому

    Ok. I totally understand this circuit now, but what I expected to see on the blower ground wire is actual square waves being pulled from battery voltage to ground with varying pulse widths. This system acts more like a resistor in that it drops a certain amount of voltage depending on the speed commanded. I am curious about the way this blower module accomplishes this?

    • @ScannerDanner
      @ScannerDanner  7 років тому

      You would be correct. The motor itself is not PWMed, only the signal input to the blower module is. Sorry for mis-speaking there.

    • @mobilemechman
      @mobilemechman 7 років тому

      No biggie bud. Thanks for clearing that up.

    • @ScannerDanner
      @ScannerDanner  7 років тому

      I'm not sure exactly how the blower module is doing this but it certainly looked like it was simply switching to different resistors internal to the board.

  • @swgarealtor
    @swgarealtor 6 років тому

    Thanks for the information. A lot to absorb. Good news is I know which part I now need to replace. Blower motor module

  • @rubbercementandsomeducttap489
    @rubbercementandsomeducttap489 5 років тому

    When i baught my truck the module was gone... i baught cheap ebay one and didnt work. I borrowed one from identical truck, didnt work. Gonna try your tests.. my truck also happens to have same onstar noise aswell.... ever figure that out?

    • @ScannerDanner
      @ScannerDanner  5 років тому

      Yeah, I was wrong, that is not on star, that is an air intake for an in car temp sensor

    • @rubbercementandsomeducttap489
      @rubbercementandsomeducttap489 5 років тому

      Mine has no power down at module at all... i tryed swapping out control unit on dash and still nothing, all fuses look good... not sure what else to check.

  • @MrBorntoroll
    @MrBorntoroll 7 років тому

    Thanks for the video! Case studies are fun.
    GM managed to invent a complicated module for a simple job :D
    It could be just a single n-channel mosfet transistor, a beefy one, looking at power ground and pwm controll, but I didn't see PWM ground (must be very fast switching), at least the one that could be detected with verus scope.

    • @ScannerDanner
      @ScannerDanner  7 років тому +1

      I don't think the ground was being controlled using a PWM principle , I had my scope set on a 6 mega sample screen and I definitely would have seen the pulses. The climate control module to blower motor control module signal was a PWM signal, but that was it. I misspoke in the video saying the blower itself was being controlled that way. It certainly looked like some type of stepped circuit where resistance was being added and subtracted. Not exactly sure how they were doing it to be honest.

  • @craigbaggett3370
    @craigbaggett3370 8 місяців тому

    Brushes in the fan motor?

  • @treymusser4197
    @treymusser4197 7 років тому

    Paul, would you say that the material covered in your book, as well as the lectures on SD Premium, will prepare me to take the L1 ASE test? I'm not entirely sure of the nature of the material that's on that test..

    • @ScannerDanner
      @ScannerDanner  7 років тому

      Absolutely! Sign up for the 14 day free trial here first. www.scannerdanner.com/join-scannerdanner-premium.html
      This way you will get to see what is in my book as I am teaching through the material. Start in one of the chapter playlists.
      Then you can decide if the book and SD Premium is what you are looking for BEFORE you make any purchases.
      Thank you!

  • @richarddaggert2630
    @richarddaggert2630 2 роки тому

    Well for starters, that’s not the onstar speaker, that’s part of the climate control system, it uses a fan and a temp sensor to sample drivers seat temps to inform the auto hvac module

  • @markferraro5250
    @markferraro5250 7 років тому

    great video SD I believe that the blower can also be load shedded on the smart charging system RVC thanks again

  • @nhhicks9
    @nhhicks9 2 роки тому

    Great video gave me a better understanding of what im looking at 👍🏽

  • @Automotive_Solutions
    @Automotive_Solutions 7 років тому +1

    Nice diagnosis. I refer to that style of resistor module as a 'hedgehog' here in the UK. Bit like a porcupine over there.

  • @MechanicTechnicianRepair
    @MechanicTechnicianRepair 7 років тому

    Excellent. Diagnostic. Master. My. Respect. For. Yuo. I have. Question a technician. For. Yuo

  • @charleslambert1280
    @charleslambert1280 4 роки тому

    what type of scanner are you useing

  • @blockbertus
    @blockbertus 7 років тому +4

    Thanks, Caleb! :)
    Also, great video, Paul!

  • @jennifer06131
    @jennifer06131 7 років тому

    Question? I i had to pick one source of information which will be your advice if i love to troubleshoot engine performance, electrical system, etc.[ Identifix, alldata or michelle ondeman?]

    • @ScannerDanner
      @ScannerDanner  7 років тому +1

      My preference is Mitchell On-Demand (same as Shop Key) simply for the wiring diagrams. They are all redrawn using the same format. No matter what you are working on, you will not have to study the legends and keys and color codes and segments, just to be able to read them.
      Factory techs hate Mitchell diagrams because of this. Alldata does NOT redraw them and will produce the actual factory diagrams as they are. Meaning every car is different. That's fine for a guy who works on one car line. But I work on 40 different manufactures cars and I want uniformity. So Mitchell/Shop Key it is.

  • @Mako-sz4qr
    @Mako-sz4qr 6 років тому +1

    Nose hair as an indicator .... nice. Great vid bro .

  • @MangoSlade.
    @MangoSlade. 4 роки тому

    Wow. Tapped it real hard and it came back on.

  • @gabrielcaldwell2723
    @gabrielcaldwell2723 5 років тому

    I have a Chevy Impala 2013 that I replaced the resistor and wiring harness to the resistor and after that it caught fire is there another underlying issue what do I do

    • @ScannerDanner
      @ScannerDanner  5 років тому

      Resistance equals heat, you missed something or caused a poor contact with something you wired

    • @gabrielcaldwell2723
      @gabrielcaldwell2723 5 років тому

      @@ScannerDanner the wiring harness deck goes into the relay under the dash was already burnt and I went to AutoZone and got it new plug I wired it up correctly but it must have another problem somewhere further down the wires

  • @paulputnam2305
    @paulputnam2305 3 роки тому

    Thanks Paul and Caleb

  • @ekimbrough1413
    @ekimbrough1413 9 місяців тому

    @17.59... Paul are you sure it's not the wires to blower motor? They look damaged.

  • @mostlymoparih5682
    @mostlymoparih5682 7 років тому

    My wife's 02 T&C had a low fan then no fan so I pulled the resistor or module and with a VOM
    I measured to see if there was an open or short. Back history, I had this happen on my T&C and so I know there are four pins that should have resistance reading on them. My wife's van had 2 pins with no resistance at all. So module or resistor is bad. But this was a deja vu so I knew where the Easter eggs were hidden. Now that I saw this I going to take that dew hickey apart and sea if I can see what you kneaded readers four4. Just kidding, gonna use a magnifying glass eye use readers two2. Great video professor and thanks.

  • @hasaamahmad867
    @hasaamahmad867 2 роки тому

    I have no power on my climate control panel. It was working at 1st an it was blowing just wasn’t getting cold cause my compressor was not coming on so I by pass my a/c compressor relay wit a paper clip then my compressor came on but then whn I got in my 2007 Denali my climate control panel would not come on nor was it blowing any air. I checked all fuses an nothing was blown. I need help wat is wrong??? Can u help me please?

    • @ScannerDanner
      @ScannerDanner  2 роки тому

      When you jumped the relay, did you jump the wrong pins at first?

  • @victornaja7927
    @victornaja7927 2 роки тому

    How many amps are to many when blower is bad

  • @SteveRobReviews
    @SteveRobReviews 7 років тому

    Nice one buddy , I almost wish you didn't unplug it - caused too many variables in my head. LOL Awesome camera work .

    • @ScannerDanner
      @ScannerDanner  7 років тому +1

      Why? It's a circuit board that gets stressed by a lot of heat. Nothing wrong with the connector and it would not have continued to work indefinitely. If I had time, better eyes and a magnifying glass, I bet I could have visually shown the failure on that board. Thanks Steve!

  • @pupupipichorrorelief4909
    @pupupipichorrorelief4909 6 років тому

    fathers 93 buick roadmaster wagon blower stays on and ac compressor kicks in and off every 2 seconds none stop unless I remove the fuse.auto climate control is weird it wont turn off at all ,blows strong air.but if I press off it just changes mode like if I was pressing mode but will not turn off.changed the climate control but same thing.disconnected resister module but still climate control still don't turn off.can it be a bad module or main computer?have to keep fuse off .any idea where to look ?thanks.

    • @ScannerDanner
      @ScannerDanner  6 років тому

      These older systems where horrible. You may have a control issue or you may just be low on charge and the compressor is short cycling because of it. Let's start with a psi reading on your AC system

    • @pupupipichorrorelief4909
      @pupupipichorrorelief4909 6 років тому

      thanks I will check charge.one quick qstion,does the blower motor resister module have anything to do with the climate control not working turning off etc?thanks

  • @Mista6I6
    @Mista6I6 5 років тому

    great detailed video that help me determine what was actually whats wrong with my vehicle, thx

  • @muladafatmack
    @muladafatmack 11 місяців тому

    When changing the module do the car have to be running

    • @ScannerDanner
      @ScannerDanner  11 місяців тому

      No, and the key should be off, with the circuit off, for the safest way to change any module

  • @juniormoreno400
    @juniormoreno400 2 роки тому +1

    I have a 2002 Yukon Denali with the same problem

  • @M3glamsquad
    @M3glamsquad 5 років тому

    First, great video!! Thanks Caleb! Next, I have a 2009 GMC yukon hybrid. I bought stickers to cover all the buttons where the black had flaked off and were green. (Like on this one) my auto button, my up and down on driver and passenger, and my passenger button. I put the stickers on and pushed hard to stick it all around. I'm a dummy and had my truck running so my ac kept popping on. I'd turn it off each time. The very same day, my blower stopped working. Then I opened and closed my door and it came back on. Then a couple weeks later, it did the samething. Then a month later, it stopped but now wont come back on. Did I kill something? Or could it be the module also? I need to figure it out asap cause I have no defrost and its gonna be very cold here very soon! I'm not working right now so I'm trying to find the least expensive way to get this done right, even if it's me doing it myself.
    Thanks so much!!!!!

  • @throttlebottle5906
    @throttlebottle5906 7 років тому +1

    also at 7:58 you can tell it's not resistor for lack of wires in total, plus the gauge of other wires :)

  • @blazers12369
    @blazers12369 7 років тому

    Bought a chevy s10 truck and the headlights werent working. For some reason there was no fuse there. I tried putting a new fuse but it isnt clicking into place?

  • @DTPmotorsports
    @DTPmotorsports 2 місяці тому

    What scanner wre you using?!