Jump to content

Shudder/Vibration Issue

bigman32hockey
 Share

Recommended Posts

ForumUser Enthusiast

ForumUser

Posted
Posted

Service manager called back ...

 

He outlined what he had been told, then shifted to his experience driving loaner Silverados ... that his wife had asked him on way home one night ...”what is that?  What’s wrong with it? “. He told her “nothing, they all do it,” then explained he needed to have the trans fluid flushed.

 

I was kind and noted ,a agin, my experience with it and my online findings ...

 

He agreed, even though they couldn’t replicate the issue on mine, that there was enough evidence for them to change the fluid, as long as I knew it might not resolve it.

 

He then related story of a guy who had issues in 2018 for months and he finally authorized his guys to change the fluid in mid December, after they had received the fluid but had not been authorized to change it by GM .... has not heard back from the guy.

 

we’ll see

  • Replies 163
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

2017Darkness
2017Darkness

You KNOW this won't fix the shudder issue?? I write service for and Chevy dealer and can assure you the flush takes care of 98% of the vibration issue. I had my 17 6.2 flushed in early December and ha

bigman32hockey
bigman32hockey

My brand new '18 Redline Editon developed "the shudder" at around 450 miles.  Mine seems to shudder worst when around 50 mph and constant speed and again between 65-70 mph, where it will do it all the

SauceyMcB
SauceyMcB

There was another post on this. Apparently the guy took his truck in and had the driveshaft looked at. The specs were a bit off and it wasn’t true all the way around. I think he said it cost him like

Posted Images

pddug69 Enthusiast

pddug69

Posted
Posted (edited)

FYI,  went to local dealership and explained to the service manager this issue and he immediately confirmed that the fix is flushing the transmission fluid and replacing it with a different type of fluid (not sure about all the specs).  Am having this done Monday morning and will report the results some time next week.  BTW, also getting nitto ridge  grapplers 305/55r20 installed, truck has rough country 2 inch level up front.  

Also noted that the issue really wasn't present until the transmission fluid was at least 88 degrees or warmer.

Edited by pddug69
ForumUser Enthusiast

ForumUser

Posted
Posted

I may be duplicating my post - but, I can't find the post I saved so will do this again ...

 

They flushed and swapped fluids per the procedure shown on the attached photo ...

 

On 10 mile drive home seemed like a normal transmission ... no shuddering, no jerking ... didn't even clunk at intersections while slowing for the light.

 

Will see ...

IMG_1465.jpg

pddug69 Enthusiast

pddug69

Posted
Posted

Appreciate the info. Am sure about the temp in fahrenheit,  it was a cold night and the temp got to 117 deg F at it's hottest.

ForumUser Enthusiast

ForumUser

Posted
Posted

brrrr ... that is a cold night .... been reading on it ... pretty common to stay way lower temp since temp isn’t controlled like on the engine and there is no combustion sou CS driving it.

 

As a BTW, both service reps at my dealer said  they read in their GM info sheet that the shudder was more common in hot climates.  I don’t have any data at all on this point.

ForumUser Enthusiast

ForumUser

Posted
Posted

Put about 240 miles on the new fluid today .... noticeably less clunk upshifting from 1-2 under light throttle, and downshifting while easing up to traffic lights.

 

Rock solid rpm while cruising at 1200-1500 rpm ... no waver, no rumble strip feel and no weirdness as it upshifted with light throttle at higher speeds ... smooth downshifts while slowing from higher speeds.

 

Need more time, but seems much, much improved. 

  • Like 2
bigman32hockey Enthusiast

bigman32hockey

Posted
  • Author
Posted

Has anyone on here ever tried the Lube Gard Dr. Tranny Instant Shudder Fix?  I know it's not a permanent fix, but from the reviews I've read the stuff seems to actually work.  I am only looking for a temporary fix until my dealership receives the new tooling from GM.  This is supposed to be sometime in mid-February 2019.  I can't stand driving the truck around with it shuddering like it does.  It's just too annoying.  My only concern is if I add this stuff, I obviously don'y want it to do more harm than good.  I'm not sure if it will affect seals, etc..  It's all going to be flushed in a few weeks, but I want to make sure it won't affect GM's procedure to permanently fix the shudder issue.  Thoughts?

pddug69 Enthusiast

pddug69

Posted
Posted

Had the transmission fluid replaced 2 days ago.  So far the shudder issue is corrected.  Time will tell, thanks everyone for the info.

G3108 New Member

G3108

Posted
Posted
On 1/30/2019 at 5:18 PM, pddug69 said:

Had the transmission fluid replaced 2 days ago.  So far the shudder issue is corrected.  Time will tell, thanks everyone for the info.

How is tranny doing..

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
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • newdude
      Where is the Ambient Air Temperature Sensor on a 2021 Chevy Suburban?

      By newdude · Posted

      Yea that's pretty normal to be off a few degrees.  Usually 2-4 degrees from say a weather app or thermometer.  
    • studly
      Where is the Ambient Air Temperature Sensor on a 2021 Chevy Suburban?

      By studly · Posted

      I just replaced the ambient air temperature sensor.  Easy as pie. I simply had to remove about 10-12 clips on the plastic cover over the radiator and remove two T-10 torx screws on the hood release lever to liberate the cover (Amazingly, none of the clips broke.  All came out and went back in with zero problems). Once the cover was removed, the temp sensor is easily accessible. The sensor cable snakes through a few guides and can be pulled out for even easier access to the sensor. I was able to work the sensor out of the mounting hole.  There is a red sliding catch on the plug that must be pulled back to disconnect the cable.  The plug was quite tight.  I had to use a screwdriver to pry it out. I plugged in the new sensor ($6.45 from RockAuto), snapped it into the mounting hole and re-snaked the cable. I put the radiator cover back on and reattached the lever arm to the hood release.  All done!     I started up my Suburban.  The temperature read 82 °F. Other thermometers at my house read 80 °F.  Close enough.  It might be reading high as my vehicle was sitting in the sun.
    • StingerZ16
      Navigating senior years.

      By StingerZ16 · Posted

      Remember when you were 50 and they called you Old Man?
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      That one looks decent for the price   BUT..I want something that also supports OBDI/1.5. A lot of the prosumer-grade scanners don't have legacy support in order to keep costs low. I believe the Autel does if you go higher end with them.   For fun, I reached out to a local Snap-On rep because I was interested in the 2600. $1895 MSRP, says he can do $1595. That's still a lot, but then again, that's not a horrible discount for just asking out of the blue. Could probably do better if I was a regular buying off his truck, but I'm not.   Not sure if I mentioned but I didn't realize with USED scanners from Snap On that you need to make sure a) the serial number isn't flagged as stolen. On the newer ones, SnapOn can remotely disable the device if it's flagged in their system. And, customer service can tell you if it is, if you're thinking about buying used. B) Make sure it's paid off. If the seller still owes money to the truck or if they financed through Snap On, the device can be remotely disabled until the balance is paid. It's less clear if SnapOn will tell you if a balance is still owed; I didn't make it that far with the used model I was considering. I did read that SnapOn has no way of tracking any "truck financing" deals between the SnapOn rep and buyer, only if they financed through corporate. So there's that extra caution needed.   Still waffling on whether I go with a ~$500ish Autel/TopDon or spend bigger money. The value seems to be in the prosumer brands. I'm not giving them enough credit TBH, actual production repair shops use them daily BUT I'm still allergic to certain kinds of underdog products trying to unseat American companies with solid reputations. SnapOn's scanner isn't wholly made in the US, but it is assembled here and they have US support and probably the most proven/ robust legacy support.   Something to think about. Value, or principles? There's a $1k difference.
    • Atlas
      Winter Returned

      By Atlas · Posted

      I'm thankful to live where we don't have extreme weather. We might all be blown to smithereens when Mt. Rainier goes, but 80 is warm enough in the summer and I can generally count the number of hard freezes in the winter on one hand. The cars here don't rust and they don't get sun-baked, either.   We have finished off many of our average 52 days of "clear/sunny" weather, though. Sunsets are coming earlier, the nights are a little cooler. It's right around the first week of September when we get our first warning that summer is coming to a close with overcast skies and the start of "hoodie weather" temperatures during the cooler parts of the day. By October, it's usually time to ditch the shorts. By November, it's mostly raining.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...