GM 8L45/90 Eight Speed RWD: Part 1

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  • Опубліковано 23 гру 2024

КОМЕНТАРІ • 55

  • @anthonymacneil2279
    @anthonymacneil2279 3 роки тому +14

    Have a 2017 Silverado with 8 speed, truck was bought new. Immediately I dumped the ATF for Amsoil and installed a Trifecta tune and never had any issues. Knock on wood

  • @debo_lt4_zo6
    @debo_lt4_zo6 4 роки тому +4

    Just took my 2016 Camaro SS in for trans shutter. They’re fix is trans flush with some new Mobile 1 trans fluid with a blue label. So far after 1500 miles the shutter is gone. We’ll see if it comes back. The service advisor at the dealership said they only had one come back and they replaced the torque converter.

    • @TransmissionDigest
      @TransmissionDigest  3 роки тому +1

      The new ATF recently released seems to work fairly well but not always. Sometimes, computer programming and /or converter replacement may still need to be done. After 1500 miles though it should be okay.

    • @billc3278
      @billc3278 3 роки тому

      My 2018 Colorado 4x4 developed the shudder in the first 7,000 miles. They did the fluid change and currently at 40,0000 shudder hasn't returned. Never have gotten a good explanation for the cause. Worried I should've bought the extended warranty.

    • @cardplayer85
      @cardplayer85 3 роки тому +1

      I had the flush with the new fluid in 2019, 20k miles later and the shutter is back. They are swapping the converter now but I don’t see how it could have been bad for 20k shutter free miles.

    • @billc3278
      @billc3278 3 роки тому

      @@cardplayer85 I'm worried about it coming back since I'm now out of warranty (2018 Colorado).....

  • @emmanuelm6090
    @emmanuelm6090 11 місяців тому +1

    I have a 2017 Colorado 4x4 and just got a new re manufacture trans and for some reason wen you put it in neutra it goes forward
    And I’m reverse it takes a lot of effort to move like it had brake a-plaid🤷🏻‍♂️ any help🙏🏻

  • @nadronnocojr
    @nadronnocojr 3 роки тому +3

    Great job gentleman, very easy to keep up thanks for sharing g your information and expertise

  • @chrisp3913
    @chrisp3913 3 роки тому +4

    So my 2016 Sierra has the same issues listed below such as hard shifting between 1-2 and hard downshifts occasionally. Is this a nuisance or will the tranny eventuall fail?

    • @mayomenace2636
      @mayomenace2636 8 місяців тому

      Curious on the same thing, looks like this trifecta tune may have a slight nullification on the hard shift? Still looking for info though.

  • @derrick9497
    @derrick9497 3 роки тому +4

    Good informational video. Your average driver should watch videos like this for and introduction to the complex modern automatic transmission. The over use of electronics and software to "fine tune" today's transmissions has made them inconsistent and quirky. As a 30 year tech in the auto industry, I am blown away by just how bad today's transmissions really are. Hydromatics, automated manuals,and CVTs included. The driving experience in a lot of vehicles is ruined by bad transmissions, from both hardware and software fronts. From time to time I have the luxury of driving older vehicles and I am amazed at how much better the transmissions were. Consistent, accurate shift points, tcc lock up, reliability, ect. Sadly, we have become acclimated to today's transmissions. The KISS (keep it simple stupid) philosophy should be brought back into engineering. The complexity, planned obsolescence, and the sheer lack of testing, has greatly reduced reliability. So much so, that many vehicles don't make it through the warranty period without overhauls or at the very least software updates. The owners of the gm/ford 10speed better pay close attention, as that transmission is a problem in the making. It is used in a lot of vehicles. Thanks, for letting me add my thoughts.

  • @markbremmer8642
    @markbremmer8642 3 роки тому +2

    I have an 18 Canyon that, I believe, has Torque converter issues. It has a tendency to shutter in 8th gear. What's the fix for this? I manually shift to 7th, and now it's doing it in no that gear as well.

    • @MWestern-m4g
      @MWestern-m4g 3 роки тому +1

      Fluid change is a good start. The synthetic recommended one.

    • @luisflores438
      @luisflores438 3 роки тому

      @@MWestern-m4g yup mine was shuddering as well...put the mobile 1 synthetic shifts and feels way better.

    • @MWestern-m4g
      @MWestern-m4g 3 роки тому

      for awhile--

    • @TransmissionDigest
      @TransmissionDigest  3 роки тому +1

      TCC shudder can be related to transmission fluid, computer strategy, torque converter or transmission issues. Engine-related issues can cause a similar feel. It does require a process of elimination to arrive at a fix.

    • @drf-1382
      @drf-1382 3 роки тому

      Mine has all of the tcc issues plus it feels like driving over rumble strips at highway speeds. The dealership fixed mine. They told me to drive slower or live with it. I can't wait to trade that pizza sheet away. Already had the fluid change, lasted about 3k miles. Torque converter changed 4k miles later, no change.

  • @daybicito
    @daybicito Рік тому

    Hello, could you tell me how is the procedure to measure the Atf. Thank you

  • @avonriley1798
    @avonriley1798 3 роки тому +2

    I have a 2019 Silverado Trail Boss with 5.3/8speed it shifts hard between 1-2, it also hesitates as if it’s finding gears and once/twice a week it will shift really hard so hard it feels like somebody hit me from the rear. I’ve taken it to the dealership and they keep telling me the codes are fine and it’s running normal which in my opinion is unbelievable if you can give me some advice on this issue as to what can be done I would really appreciate it

    • @boudroux1
      @boudroux1 3 роки тому +1

      My 2018 Sierra does the same exact thing. I’ve been complaining to my local dealership since I bought it new. It’s now over 60K miles and out of warranty. I’m beyond pissed at GMC.

    • @TransmissionDigest
      @TransmissionDigest  3 роки тому +2

      Unfortunately, hard shifting and lock-up shutter is why a class-action lawsuit was filed against GM. New fluid seems to fix some of the lockup shutter issues but not hard shifting. Sometimes resetting shift adapts will work but not always. Shift quality is a cross between computer programming and solenoid/valve body function. Currently, to my knowledge, there is not an aftermarket fix. Sorry.

    • @karlschauff7989
      @karlschauff7989 3 роки тому +1

      A hard 1-2 shift when it's cold is common with this trans due to clutch-fill times.

    • @1954saltydog
      @1954saltydog 3 роки тому

      Sounds about right....these issues is the reason I got rid of my 2016 GMC. It sad really, as the GMC was great truck, just an awful transmission

    • @karlschauff7989
      @karlschauff7989 3 роки тому

      @@1954saltydog Which is fascinating, because I've been driving a 2019 Silverado with the 8-speed and it's one of the best automatics I've owned. It's really a common situation with every new transmission. When the 4L60/4L60E was the new transmission, they were awful in the early years but later became great transmissions once the issues were solved. Then the 6L80E showed up and everybody absolutely hated it due to early issues. Once the issues were addressed, it because a pretty solid transmission. Then the 8L90 shows up and everyone hated it because of early issues, but once the issues with converter drainback and Dexron HP were fixed, it's becoming a good transmission. This isn't isolated to just GM either. The first few years of the ZF 8HP were notorious for issues. Even once it went into the Ram 1500, the first couple of years had plenty of complaints for hard shifts, bump downshifts, etc. Complaints came back again in 2019 when the new Ram 1500 received an "updated" ZF 8HP that caused all kinds of new issues with slamming downshifts, bump downshifts, becoming "stuck" in 2nd gear at a stop, etc. Ford had a lot of complaints with early 6R80's, the "updated" 6R80 in 2015, and the 10R80 when it was pushed into every new F-150 in 2018. When Toyota began putting the AB60E/F into the Tundra, it had issues with "slipping" sensations, solenoid failures, converter issues, etc. The 2016+ Tacoma's 6-speed has had massive complaints for flared shifts, terrible shift programming, delayed engagement, hesitation taking off from a stop, etc. The Toyota 8-speed that went into the Camry and other vehicles was infamous for torque converter failures, shuddering, delayed engagement, premature transmission failures, etc. It seems that no manufacturer has a flawless launch of a new or modified transmission design.

  • @blackwater1828
    @blackwater1828 3 роки тому +2

    What other 8 speed transmission can i get instead of this 8L45? For a ATS V?

    • @TransmissionDigest
      @TransmissionDigest  3 роки тому +1

      Due to vehicle complexity, today swapping transmission models is almost impossible. Aside from the 8L45 or 8L90 the only other possible option might be a six-speed like a 6L80. Even that would be hard to do.

    • @blackwater1828
      @blackwater1828 3 роки тому

      @@TransmissionDigest thank you i understand. I have the 8L45 on my Atsv with new the mobile one synthetic transmission fluid. It’s working good since doing that fluid change, do you thinking this transmission will last a while or should i be worried about it?

  • @josephbreen9955
    @josephbreen9955 4 роки тому +1

    I'm have a hard shift and when I put it in reverse the transmission shacks hard. My transmission is 8 speed in my 19 Silverado

    • @devinbellis9898
      @devinbellis9898 4 роки тому

      Bring it to chevy there is a special coverage on it and can be fixed for free under powertrain warranty. These clutch packs have a slow to fill issue and there are now updated pistons and calibrations to the tc to fix this issue

  • @thejeremyryan
    @thejeremyryan 2 роки тому

    How swappable is the 8l45 and the 8l90 in a zr2 colorado? I'm assuming the stock computer wouldn't the 90 correctly?

  • @caroliner6234
    @caroliner6234 3 роки тому +1

    Nice video fellows.

  • @razor4059
    @razor4059 3 роки тому

    Great video

  • @tommccallan8802
    @tommccallan8802 Рік тому

    Before he repairs your trans. He sings " Everybody Loves Somebody Sometimes "🎵🎼🎶

  • @Pitchithard
    @Pitchithard 4 роки тому +4

    Just enuf electronics to make my 2020 canyon run like I'm pulling a trailer. Thankfully I leased I will turn it back to GM and walk over to Toyota.

    • @MWestern-m4g
      @MWestern-m4g 4 роки тому

      Run over to Toyota

    • @karlschauff7989
      @karlschauff7989 3 роки тому

      Toyota has their fair share of transmission issues. Especially the 2016+ Tacoma, which has had nothing but complaints for flared shifts, delayed engagement, constantly shifting between gears (this is one of the worst issues), underfilled transmissions, seal leaks, hesitation issues, etc. That's on top of the 50% of owners that complain about howling rear diffs that Toyota claims is a wind resonance... even though the rear diffs howl when the truck is on a lift, stationary, and the rear wheels are turning.

    • @johnw4067
      @johnw4067 3 роки тому

      Excellent decision.....there is a lawsuit against GM over this transmission.

    • @commanderinsleep2779
      @commanderinsleep2779 3 роки тому

      Great I just Bought a ‘21 Zr2! 🤦 3500 miles on it so far!

  • @josephbreen9955
    @josephbreen9955 4 роки тому +9

    I really dislike the 8 speed transmission

    • @firebearva
      @firebearva 3 роки тому +1

      A very expensive vibrator.

  • @GH-oi2jf
    @GH-oi2jf 3 роки тому +2

    I think they mean “shudder.”

  • @bill_4888
    @bill_4888 3 роки тому +1

    All I know is that the 8L45 transmission in 2016-18 Cadillac CT6's was a mess.

  • @stevegriffith7236
    @stevegriffith7236 2 роки тому +2

    Come on guys. I can see using a speed handle during assembly on some applications, but what ever happened to air or battery impacts for an disassembly. Don't have time for hand tools in our build room unless it's a torque wrench.

  • @gdtruckern7632
    @gdtruckern7632 11 місяців тому

    Thanks for the video. and i can probably say this for thousands of people. What was GM thinking when doing this to all those people trusting their products and vehicles buying this junk mess of a transmission issues. SAD !! Come on NO dip stick tube!! Junk TC !! What a waste and mess just to service these transmissions. 5 year old can figure it out to put a drain screw in drain plug on botton of pan to drain it. Wtf you have to pump fluid up threw a dam hole instead of a regular dip stick tube to check level of trans fluid.

  • @crowdnine878
    @crowdnine878 Рік тому

    All the electronics make for new problems to work out over time. Just like when car makers went from carburetor to fuel injection. And ppl think they want a self driving car 🤔

  • @Outlaw-ok7tn
    @Outlaw-ok7tn 3 роки тому +2

    Bought my new gm truck a year ago..spends most of its time getting electrical fixed andbthat peice of junk transmission in it ugghhh My next New one will not be a Gm

  • @mikesettlemyer5052
    @mikesettlemyer5052 2 роки тому +1

    this old stuff turbo 400 worked

    • @mmaxon888
      @mmaxon888 Рік тому +1

      Yep, my '70 Chevelle has 197k on it and never had a trans issue! New fluid/filter every 30k is all. It's been towing boats all its life as well.

  • @1954saltydog
    @1954saltydog 3 роки тому +3

    Goodness I hate this transmission!

  • @firebearva
    @firebearva 3 роки тому +1

    I unfortunately own one of those defective 2018 GMC Sierra vibrating dildo transmissions.

  • @guydandrea3884
    @guydandrea3884 3 роки тому

    Putting an XK jaguar in neutral without starting the car

  • @SL-kg2pe
    @SL-kg2pe 2 роки тому

    You have a girl's working when are high speed transmissions no wonder they're failing