Jump to content

TxTruckMan

Vibration in Floorboard, Not Speed/Tire Related

Recommended Posts

First off, I did a search and the only thread that appeared was the 41 page "Shake or Vibration" thread. But after looking through about half of it, nobody appeared to have a problem similar to what I'm observing.

 

Since I've taken delivery of my Denali in December, I've been noticing a slight vibration in the floorboard when accelerating, and then at certain RPMs. I've had tire and balancing issues before on other vehicles, and this is definitely not related to the tires or even speed - my truck rides smooth as glass. My problem is related to engine RPMs and slight vibrations and is only noticed at my floorboard. The vibrations aren't too bad, but the issue is that my feet (mostly left and right heel) start going numb on moderate to long length drives. When I was younger I had a job as a bike assembler using power tools all day and I would experience the same numbness/tingling in my hands after a long day of building bikes. When the vibration occurs, I can generally let off the gas a little and it'll go away. But it's present much of the time. It's so slight that I didn't really care, but now that it's causing my feet to go numb, I can't ignore it.

 

Has anybody else noticed something similar? It feels like maybe a motor/transmission or body mount is bad. I'm going to mention it the next time I'm in for service, but wanted to see if anybody else was experiencing something similar.

 

Thanks.

Edited by MotoMedic
Added Topic Tags
  • Like 1

Share this post


Link to post
Share on other sites

There is a PI out that addresses vibrations in the 30-35 mph range that is related to the driveshaft. Generally when we see a u-joint or driveshaft issue you will feel it in the floor and it can be more or less noticeable with a load on the drive train. Could be what is causing the issue for you.

 

Craig

  • Like 1

Share this post


Link to post
Share on other sites

I have the same vibration or sometimes sounds like a hum or drone. Since there is not a clear fix as advised as advised by my dealer to do nothing and wait for fix. When I hear or feel the vibration, I change to a speed that it doesn't do it. Have had the truck a month and has been in the shop 5 times and this time for two days now. The infotainment failed. Not happy. I don't know what to do next.

G

Share this post


Link to post
Share on other sites

There is a PI out that addresses vibrations in the 30-35 mph range that is related to the driveshaft. Generally when we see a u-joint or driveshaft issue you will feel it in the floor and it can be more or less noticeable with a load on the drive train. Could be what is causing the issue for you.

 

Craig

Nope, definitely not speed related. Happens from 2 mph to 80 mph just the same. Definitely engine RPM related.

Share this post


Link to post
Share on other sites

Nope, definitely not speed related. Happens from 2 mph to 80 mph just the same. Definitely engine RPM related.

There is another one related to the trans and motor mount but it is for a vibration at idle and in gear. It is supposed to go away off idle. It could still be your concern as anything that bridges across from the motor to the body can cause a vibration. It also could be something simple like a trans or oil cooler line that is slightly out of place and touching something. Best bet is to get it in to a decent dealership equipped with a vibration analyzer and a tech smart enough to use it. There is another PI dealing with escalating vibration concerns to GM technical assistance but the tech better have crossed all the "Ts" and dotted all the "Is" before calling in as the worksheet was pretty comprehensive.

  • Like 1

Share this post


Link to post
Share on other sites

Hello Black03Yukon,

 

I understand that you are experiencing vibrations in the floorboard of your vehicle while accelerating. I’m not able to offer technical advice, but I would like to reach out to your preferred dealership so that you can get this concern properly diagnosed. If you would like my assistance, please send a private message referencing this thread. I will be happy to help!

 

Kristen A.

GM Customer Care

Share this post


Link to post
Share on other sites

Interesting, I thought it was just my truck as I could not find any reference to this type of vibration in my searches.

 

For me, there is a vibration in the floorboard and can also be felt in the gas pedal. It is right around 1500 RPM and you can feel it if you are parked so for sure its engine related. I have to bring the truck in for the exhaust heat recall and I will ask them to check on this. I bet they brush it off though.

 

It seems the problem appeared after a couple hundred miles as I am sure it was not there when I picked it up. I recently installed running boards so I am wondering if that has anything to do with it. Tempted to remove the driver side board to see. But I doubt it.

 

As you mentioned, I was on a long trip and I kept changing my speed to get rid of it. You can feel it around 50-65, so I had to go over 70 so keep it smooth.

 

It runs nice and smooth at other RPM's so I am not happy that a new truck has this issue!

 

If anyone finds a solution, please post!

 

Mine is a GMC SLT crew cab with the V8 and Z71.

 

-Rich

Share this post


Link to post
Share on other sites

Mine does this. It kinda comes and goes as you drive along. A buzzing like sound, high frequency vibration. Not real bad but I notice it. Mentioned it to service manager already. Not driving much this winter, but if it keeps anoyning me him and I are going for a ride sometime. He suggested maybe I should drive another truck off the lot to compare. I'm thinking if a lot of people are having the same problem hopefully there will be a TBS or something eventually. Also I noticed it doesn't matter if it's in V4 or V8.

Share this post


Link to post
Share on other sites

My truck has that vibration as well, and in the steering wheel, very noticeable in V4 mode, but still there in 8mode. I have had a gm field service engineer address this, he replace two rear tires and balanced my drive shaft, picked it up slightly better, steering wheel still vibrated, and now after two days i can feel it in the flor again. They treid swapping tires to bridgestone duelers to no avail. It is escalated to gm district manager.

 

I hate my entire experience with this s-box truck. 44k does not get you much these days, lets hope GM steps us for us.

Share this post


Link to post
Share on other sites

Mines not the tires. Feels like the exhaust system or sometime vibrating to me. Has to be lugging just right to hear it.

Share this post


Link to post
Share on other sites

For sure mine is not the tires its the engine and the vibration is more of a buzz in the floor board. I think its something like the exhaust or motor mount that is not mounted or isolated properly. Only feel it between 1500 and 2000 RPM and its a little worse under load.

Share this post


Link to post
Share on other sites

For sure mine is not the tires its the engine and the vibration is more of a buzz in the floor board. I think its something like the exhaust or motor mount that is not mounted or isolated properly. Only feel it between 1500 and 2000 RPM and its a little worse under load.

Yeah, maybe if enough of them show same problem they will figure it out and issue a TBS on it eventually. Mines really not that bad I feel something.

Share this post


Link to post
Share on other sites

For sure mine is not the tires its the engine and the vibration is more of a buzz in the floor board. I think its something like the exhaust or motor mount that is not mounted or isolated properly. Only feel it between 1500 and 2000 RPM and its a little worse under load.

Exactly what I feel. A slight buzzing on the floor, low rpm, definitely not tire or speed related, more under slight load. I really didn't care too much about it until my foot/feet started to get numb. I wonder if the new hydraulic body mounts aren't spec'd correctly, or if some are bad?

Share this post


Link to post
Share on other sites
Yeah, maybe if enough of them show same problem they will figure it out and issue a TBS on it eventually. Mines really not that bad, but I feel something.

Share this post


Link to post
Share on other sites

I get a pretty good vibrating under harder acceleration. it seems to travel through the floorboard from the front to the back. I am going to wait a while to take in to dealer so they can try and iron the others first. maybe come up with a proper fix.

Share this post


Link to post
Share on other sites

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


  • Similar Content

    • By Chris Lee
      Just replaced e driver side engine mount. After the install, my idle/park started rough idling specially it has more vibration and noise during Reverse. Any idea what could cause this? 
    • By mattjohn245
      Good morning,
       
      So I'm finally going to reach out to my fellow Silverado and Sierra owners. I have been dealing with a harmonic vibration issue with my 2014 Silverado crew cab 5.3 2WD for around 5 months. I have taken my truck into 3 different dealers to only have the driveshaft replaced under the powertrain warranty and it fixed about 40% of my vibration issue. The vibration can be felt in the gas pedal, steering wheel, seat, and it can be heard. It sounds a lot like a phasing boom. The dealer that replaced the driveshaft has said they now believe its my "CHEAP hancook tires" but I can duplicate the vibration with the truck supported on jack stands under the axle housing (not changing the pinion angle) with the wheels removed. Now with the wheels removed the vibration is not as bad but its still the same vibration I'm experiencing. One dealer told me I have a bent axle but I don't have any wobble side to side with the wheel on. the driver side wheel does look like it has a highspot with the wheel installed (you can swap wheels with the same results). the tech that replaced the driveshaft said he checked the axles and the checked out okay... Now I have yet to get a good dry warm day to throw a dial indicator on it myself to check but I wanted to check with yall and see what you think. the next nice day I get I plan on pulling the diff cover and taking a look inside. but any help would be much appreciated. I took it in to see about trading back into a Toyota and they didn't want to give me hardly anything for it and the new TRD Tacoma I drove just seemed so cheap for the $36,xxx they wanted for it. My Silverado has a lot more features plus im a fan of the LS engines so I plan on trying to resolve this issue before I try to trade it again.
       
      vibration is felt from 20-70+mph the worst is 55-65mph. running boards have been removed, new trans mount, new complete driveshaft. tires have been rotated and the vibration is still coming from the rear center of the truck. Vibrates in V4 & V8, and in neutral.
       
      I also have a case opened with GM on this issue since October 2018 so it's well documented.
       
      2014 Silverado LT 5.3L 6l80e 2WD crew cab. (built in the mexico plant)
      87,XXX MILES.
       
      Please keep the stupid comments to yourself. I just want to get this issue resolved so I can enjoy this truck.
       
       

    • By Birdwatcher62
      My 2018 Sierra SLT Crew Cab has an annoying buzzing sound, rattle, or vibration when in motion that come from the headliner, overhead console area. When I lightly press up the headliner or plastic molding in this area the noise stops. I only hear it when no radio is on but annoying on a year old truck GMC. It is not the eye glass holder that I can tell. Any ideas? Do you think the warranty should cover silencing this vibration?
    • By Danny Harageones Jr.
      I'm new to forum,
       
      I have a 2002 Chevy Silverado 2500 Standard Cab 2 door ( Not a HD )
       
      My Center support Bearing for my driveshaft is Bad.  I have searched continuously for a video that has the support bearing (SB) in the same location and cant find one.  My SB is Not hanging like others but it was located above the frame. Is this correct? My truck has ran fine for years until this went and I was wondering if the SB was supposed to be installed below the frame ( appearing to hang). Thanks for everyone's cosideration and help
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Forum Statistics

    205,549
    Total Topics
    2,196,919
    Total Posts
  • Member Statistics

    174,803
    Total Members
    8,960
    Most Online
    sethcrouch
    Newest Member
    sethcrouch
    Joined
  • Who's Online   80 Members, 0 Anonymous, 630 Guests (See full list)

×

Important Information

By using this site, you agree to our Terms of Use.