Jump to content

Recommended Posts

  • 7 months later...
Posted

Mine has been to the dealership four times with a shudder. (3 different dealers)   They say it's normal.  This is my last GM product. I can't stand driving my new truck

 

Posted (edited)
30 minutes ago, KC1 said:

Mine has been to the dealership four times with a shudder. (3 different dealers)   They say it's normal.  This is my last GM product. I can't stand driving my new truck

 

Take it to the dealer again and tell them there is a TSB 19-NA-121 out for TCC shutter this as it flushes and changes the trans fluid to the new type of Mobile 1 blue label fluid, I had this done about a year ago and all is fine. 

Edited by Silverado4x4
  • Thanks 1
  • 4 months later...
  • 2 years later...
Posted

@nichos I think I’ve been having the same problem on my 2019 Silverado 1500 5.3L V8- getting worse/more frequent the last month or two.
 

Did you get the Trans fluid flush done and have any benefit? 
 

Hoping I can get away with just the TSB that @Silverado4x4 mentions there.

 

thanks in advance!

-Gary

Posted

@Garystruder I think it did for a while but the problem came back. I took it in at the start of the year since I knew my 60k powertrain was expiring. The dealer said it would be covered and GM would rebuild it for free.

 

I was fortunate though, the dealer included a 100k warranty when I bought the truck and I was able to get a new transmission (see this thread: https://www.gm-trucks.com/forums/topic/263709-2020-chevrolet-silverado-1500-8-speed-shudder/#comment-2647696 )

 

Anyway, I have the new transmission, I wouldn't say it's smooth, but the shudder is definitely gone. Still had shift when she's cold.

 

Good luck!

  • 5 months later...
Posted (edited)

I experience the same thing a high frequency vibration. It’s not at a severe level yet I was concerned. I took my truck into the local Chevy garage. The service manager said it was due the torque converter. He wanted to replace the fluid in the transmission. He said that might help. $675 later with new fluid the high frequency vibration comes and goes as before. 
I’m planning a 2,000+ mile trip over Christmas. I’m concerned regarding possible transmission failure on the trip. The truck is a 4 door with a 5.3 liter engine - 4x4 of course. The truck has 130,000 plus miles on it. 

Edited by LHardy
Posted
19 hours ago, LHardy said:

I experience the same thing a high frequency vibration. It’s not at a severe level yet I was concerned. I took my truck into the local Chevy garage. The service manager said it was due the torque converter. He wanted to replace the fluid in the transmission. He said that might help. $675 later with new fluid the high frequency vibration comes and goes as before. 
I’m planning a 2,000+ mile trip over Christmas. I’m concerned regarding possible transmission failure on the trip. The truck is a 4 door with a 5.3 liter engine - 4x4 of course. The truck has 130,000 plus miles on it. 

Our team understands how this concern can be frustrating, and we would like to take a moment to learn more and assist as best we can. To do so, please send us an email to [email protected]. Be sure to include your Username and Forum name in the subject line with any additional details you find helpful. Our team looks forward to hearing from you. 

Posted
On 11/19/2024 at 7:36 PM, LHardy said:

I experience the same thing a high frequency vibration. It’s not at a severe level yet I was concerned. I took my truck into the local Chevy garage. The service manager said it was due the torque converter. He wanted to replace the fluid in the transmission. He said that might help. $675 later with new fluid the high frequency vibration comes and goes as before. 
I’m planning a 2,000+ mile trip over Christmas. I’m concerned regarding possible transmission failure on the trip. The truck is a 4 door with a 5.3 liter engine - 4x4 of course. The truck has 130,000 plus miles on it. 

We hope all is well. As previously mentioned, our team would like the opportunity to look into this matter on our end. To do so, please send us an email to [email protected]. Making sure your Username and Forum name are included in the subject line with any further information. Thank you and we hope to hear from you soon. 

Posted
On 11/19/2024 at 7:36 PM, LHardy said:

I experience the same thing a high frequency vibration. It’s not at a severe level yet I was concerned. I took my truck into the local Chevy garage. The service manager said it was due the torque converter. He wanted to replace the fluid in the transmission. He said that might help. $675 later with new fluid the high frequency vibration comes and goes as before. 
I’m planning a 2,000+ mile trip over Christmas. I’m concerned regarding possible transmission failure on the trip. The truck is a 4 door with a 5.3 liter engine - 4x4 of course. The truck has 130,000 plus miles on it. 

Our team would like you to know that we are just an email away if you are ever in need of assistance. Thank you and have a great day. 

Posted

Same deal.  2019 with 5.3L at 44k miles and started to experience a slight shudder at about 25mph with gradual acceleration.  I use a Range device to disable DFM.  Brought it in and had the Tranny flush....seems to have made a difference.  Do not have any symptoms afterwards and keeping fingers crossed.   Dealership was quick to point out either the Tech Bulletin for Tranny Flush or TC issue.     

Posted

I have been having this problem for the longest time! I have had several dials ran on it and nothing. Came across this thread and it looks like there is a TSB?! I thought GM service centers were supposed to check these when you bring your truck in for service?! I’m shocked at this discovery. I could have some serious damage happening to my truck and GM has failed to send me ANY letter of any sort stating there is a TSB! GM, please reach out to me to help come to an amicable resolution for both of us. I love my truck, 2019 Silverado Z71 RST, affectionately named “A10 Warthog”. 

Posted
22 hours ago, Amondy_19_Silverado_RST said:

Just brought my truck in to another service shop. Shudder is so bad…they recommend an entire transmission swap!!! How on earth can that be?! GM…if you’re reading this, would love to hear how we can work together to resolve this without lawyers. 

Our team is sorry to hear of this shudder concern you have been experiencing with your vehicle, and we would like to take a moment to learn more and assist where we can. Please send us an email to [email protected]. Be sure to include your Username and Forum name in the subject line with additional details. We look forward to your email. 

Posted
On 12/3/2024 at 2:18 PM, Amondy_19_Silverado_RST said:

Just brought my truck in to another service shop. Shudder is so bad…they recommend an entire transmission swap!!! How on earth can that be?! GM…if you’re reading this, would love to hear how we can work together to resolve this without lawyers. 

We hope you are doing well. As stated prior, our team would like to help in investing this matter further with you on our end. When you can, please send us an email to [email protected]. Making sure that your Username and Forum name are included in the subject line with further specifics. Thank you and we do hope that we hear from you soon. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    342,914
    Total Members
    8,960
    Most Online
    AidenVorpagel
    Newest Member
    AidenVorpagel
    Joined
  • Who's Online   0 Members, 0 Anonymous, 1,299 Guests (See full list)

    • There are no registered users currently online

  • Latest Articles

  • Posts

    • Thanks newdude!  By the time manual selection is needed, I'm probably too much of a control-freak to depend on the transmission sensing braking to activate automatic downshifting.  I would be anticipating the situation and already be manually downshifting.   This truck replaced a 2004.5 LLY diesel with the Allison 5-speed.  Putting it in T/H made noticeable differences (when the torque converter locked, upshift points, downshift behavior).  On this 2024 gasser with the 10L1000 I haven't been able to detect much, if any, difference.  Ok, I can never tell now when the torque converter locks up.  But I also don't notice differences in shifting.  For downhills, I've probably already manually downshifted by then anyway.  Since it's also more awkward (than the 2004.5) to engage/disengage I don't even bother.  Or maybe it doesn't really matter with just a 3k lb. camper in the bed?   Thanks also for the list of reasons the charging system might select various voltages.  However, what I am seeing doesn't fall into any of those categories.  It very definitely, and very consistently, rises after coasting/braking.  Maybe not immediately, but not very long after coasting/braking.  Very consistently drops voltage when no longer coasting/braking.  It might also be interacting with the camper battery charging (I might disconnect the camper and see if it changes the charging behavior).  I also need to recheck turning on headlights for when I want to force it to charge the camper.   Another JR, in June I converted the camper to LiFePO4.  Since it's not a good idea to try to charge lithiums directly using truck, I installed a Victron Orion XS DC-DC charger (which BTW is AMAZING!!).  Being cheap, I only had to buy that one item (besides the battery, of course) to do the conversion.  The camper OEM 120v battery charger (only 19 years old and works perfectly) and the truck feed the input to the DC-DC charger (not at the same time).  But I didn't want the camper charger feeding back to the truck so I kept the old separator.  I considered replacing the separator with a 30amp diode but that means more work and might add another 1/2 volt drop.  One thing that surprised me was the voltage drop over the long 10awg wire run, so I can only charge smoothly at 8 amps (because the DC-DC charger is completely configurable).  Another reason I don't want an added voltage drop with the diode.  I might also be a little lazy but all this work is being done under the sink with a small cabinet opening.    
    • apparently CA smog is (or at least was)  checking that the vehicle is using the oem and/or a ca smog approved tune, so I expect you'll fail inspection doing it.
    • yes, leaking exhaust will mess up o2 sensor readings, which in turn messes up fuel trims.
    • 286,740 Mile Services   8/6/2026   New AC Compressor. Refrigerant oil and dye, evacuate and charge system.  New exhaust system from cat back.  New Iridium plugs plus replace #3 coil Repair/rewire headlamp wiring (passenger side) and replace all forward bulbs. Polish lenses of both assemblies.  Pull rear rotors, clean and adjust parking assembly. Inspect, clean and grease front calipers. Check pads and shoes.  4 wheel power bleed of brake system. Dot 4 Reset idle speed 50 rpm higher New Serpentine belt.    Will need new pads in the rear in about 5K more miles.    Tax Title and License out the door just short of a grand.    AC clutch had bitten the dust. 1 year warranty on the pick and save replacement. Thing will make a Polar Bear cry Uncle.  He spent quite some time on the wiring. It was in the harness and he does nothing half. I got off cheap. I have considerable more light down the road. Sylvania Silver Star replacements.  Gas seal between the porcelain and shell of plug #3 was blown, cooked the coil. That was the cold miss.  Love the new exhaust. I can sneak into the neighborhood again.  Nice to have a working parking brake again. Belle Tire never got it done. That was disappointing.    This was one of her bigger bills and still way cheaper than a payment even given the oil consumption. This thing cost me under a hundred a month in repairs and normal routine costs. What is my incentive to replace it? 🤔           
    • hello I recently bought a 2012 gmc 1500 with a 5.3 and have a AFM disabler on it I'm interested in doing a cam but I'm worried if I remove the AFM system I will fail smog does anyone have info if they are able to detect that or a work around to it (not talking about hot smogging) please let me know thank you  
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...