Jump to content

Shake or Vibration Issues

Silver space ship
 Share

Recommended Posts

MRW412 Enthusiast

MRW412

Posted
Posted

Had an interesting surprise the other day. When I bought my truck I installed a leveling kit within the first month. I took it to the dealer to have it aligned after leveling. For the last 30000 miles the truck has had with a 'heavy' steering feel. It tracked straight without any steady pull in either direction. The steering wheel was centered. Even though it tracked straight, it required steady back and forth with any road imperfection or wind, etc. You always felt like you had to keep a little steering input one direction or the other and back and forth sort of tacking down the highway. I too have dealt with a slight vibration as long as I recall with this truck. Now for the surprise. I had it aligned and while they messed up the center line of the steering wheel (which they are correcting tomorrow), they found the front wheels had a toe and camber split that fought the other wheel. The amazing part was that my tire wear has been pretty dang good on these stock GoodYears. they have all worn very evenly. And the vibration is GONE. I have no vibration in my truck at all now. I sure hope they don't mess it up re centering the steering wheel.

 

 

Vibrations still gone after alighnment?

 

  • Replies 12.9k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

csckickass
csckickass

Well folks, I did it. After all the failed attempts at the Chevy dealer I traded it in for a 2015 Ram 1500 Larame. I have to agree with the other folks on here that have done the same thing, it was th

mafd2
mafd2

Apparently you and the other customer reps don't care. If you or GM would care y'all would put more effort in the matter. Just coming on the forum and stating the same repetitive posts and being a 3

DALaws
DALaws

Well I have some good news and bad news about my truck vibrations. Good news is that my truck has a significantly less vibration at speed. The bad news is my truck has significantly less vibration. Fo

Posted Images

pm26 Senior Enthusiast

pm26

Posted
Posted

Folks have accepted the issue for what it is and have vented their frustrations and have moved on, I suppose. What more can be done.

Yes, and evidently they continue buying these trucks, hoping against all odds that GM actually gives a crap.

EspoMan Enthusiast

EspoMan

Posted
Posted

Folks have accepted the issue for what it is and have vented their frustrations and have moved on, I suppose. What more can be done.

Pretty much. I'm giving up on this soon. Tired of worrying about it. Soon as I can I'll get a other truck and never look at a GM product again.
  • Like 2
Brakin7 Enthusiast

Brakin7

Posted
Posted

X2

 

Lost count of how many days in the shop in the 4 short months of ownership. Approaching 30 days, i think. Lost count of how many unreturned phone calls. Lost count of how many times I have had to get a little shitty just to get them to do what they told me they would in the first place. Lost count of how many days I came home pissed off because I feel like a dummy for dropping it off at the chevy dealership instead of at the Ford dealership. worst part is, I know they'll do the same shit.

 

Maybe I'll just save my $737 for a month and buy a 98 yota.

 

Sorry for the cussing y'all. It makes me fkin ill.

C6Bill Enthusiast

C6Bill

Posted
Posted

For any of you on the fence about opting out, you have to ask yourself is it worth the time and energy. One of these vibrators is like a toothache. I've been thrilled ever since I had mine taken care of, as are others who have done the same. I get it, it sucks losing money but this issue is just so damn frustrating and time consuming that it just isn't worth dealing with it. Lose the money and get your life back.

07Softail Senior Enthusiast

07Softail

Posted
Posted

I still can't believe nobody is having the Driveshaft checked or the outter edge of the axle flange. There are videos of these two components clearly out of wack, at least show the videos to the service managers after all they are not going to invest time on this because they won't get paid for it. I took it upon my self to take my driveshaft out to have it checked and I will be checking the axle flange to just for curiosity.

 

 

RT

C6Bill Enthusiast

C6Bill

Posted
Posted

I've seen a couple of folks saying they did have their drive shaft checked after your post. I haven't seen any of them jumping up and down about it fixing their issues, have you ? Maybe I missed it ?

Schmidt152 Enthusiast

Schmidt152

Posted
Posted

I would love to check mine. I even have a dial indicator that I could use, but I don't have any way of lifting my truck except for the jack that comes with it. I'm not about to crawl under my truck without jack stands or cribbing. My problem is that when I brought it to a driveshaft shop, they didn't want to touch it. I have no other shops without driving over 2 hours away. Dealership stated that they checked my driveshaft and said it was better than GM's spec but is hard to believe anything they say. I think no one is saying much right now because most people are probably in a holding patterning waiting for the dealerships to call them back. I'm currently waiting for new tires, AGAIN. This time is suppose to be different, they are putting on Michelins. I doubt its going to change anything but I still want to have some hope deep down. I will be showing them the videos of the axel flange and driveshaft and will be talking to the owner of the dealership to have them check it. I would like to be there when they are taking their measurements but idk if that will be possible.

steelcity Enthusiast

steelcity

Posted
Posted

Pretty much. I'm giving up on this soon. Tired of worrying about it. Soon as I can I'll get a other truck and never look at a GM product again.

That's what I did. Traded an 2016 Sierra ltz on a 2016 Jeep Rubicon Hard Rock. Took a small bath but at least I'm riding around smiling instaed of frowning

EspoMan Enthusiast

EspoMan

Posted
Posted

I still can't believe nobody is having the Driveshaft checked or the outter edge of the axle flange. There are videos of these two components clearly out of wack, at least show the videos to the service managers after all they are not going to invest time on this because they won't get paid for it. I took it upon my self to take my driveshaft out to have it checked and I will be checking the axle flange to just for curiosity.

 

 

RT

I did exactly that. Driveshaft was slightly out of balance. They fixed it and still vibrates.
EspoMan Enthusiast

EspoMan

Posted
Posted (edited)

Checked axle flange too?

 

RT

How would I check that? My dad and I rotated both rear tires while on the truck and they were spinning true. We put a dial gauge on the edge of both tires and had zero readings on the gauge. They were spinning true. I would think if it was the axle flange then my tire wouldn't be spinning true and the dial indicator would show a reading. Edited by EspoMan
14silverado4.3 Enthusiast

14silverado4.3

Posted
Posted (edited)

Great news at 51000 miles!

 

I am getting cyclic vibrations in V4. Feels like torque converter shudder. Most noticeable on long down hill grades with cruise on 71 and in V4, every 9 to 10 seconds I get a very noticeable vibration for 2 to 4 seconds then repeat until it shifts into V6.

 

My shifting in normal driving is erratic, feels like a dead spot in 2nd gear, engine revs peaks revs a little more and drops, and I mean drops into 3rd gear. There seems to be little throttle response in low RPM, really need to push down on the throttle to get moving then it wants to drop down a gear. City driving is stupid when cruising in 5th or 6th gear going 25, I can't put enough light throttle to get it going to 35, it has to downshift.

 

I am seeing and hearing some RPM changes when throttle position does not change.

 

The vehicle check engine light is not on, are there deep codes that will not throw the light but will be found with OBD scan?

 

Anyone want to guess what dealer will tell me next week?

 

My guess is "normal".

Edited by 14silverado4.3

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

    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      I will be doing that for sure, but I need to solve who has/ where I can find a bidirectional scan tool that will support OBD 1.5. I'm kicking myself because I ebay'ed a Snap On MT2500 that I didn't think I'd ever need anymore. D'oh!! I'd rather not buy another, so I'll contact a few local shops to see if they have one and how much they'd want to do the procedure. I'd rather have the ability to do it myself... I wish there was a modern tool that could do it all, but I'd have no idea what to buy.   The theory with the pulled timing is that it mimics a rich condition. The delayed spark causes incomplete burn and the O2 sensor picks up low oxygen levels. That's interpreted as a rich condition so the PCM pulls fuel and that shows up in the deeply negative fuel trims.
    • Chuck FB
      Joke Thread

      By Chuck FB · Posted

      An ultra wealthy man had the most beautiful daughter. But, there was a problem. Everything she touched would melt in her hands. No matter what, Metal, Wood, Stone. Anything she touched would melt. She could not feed herself. Because of this, men were afraid of her. Nobody would dare marry her. Her father was despaired. What could he do to help his daughter? He consulted doctors, scientists and anybody who could solve this problem. Finally one of them said, "If your daughter touches one thing that does not melt in her hands, she will be cured." He was overjoyed and came up with a plan. The next day, he held a competition. Any man who could bring his daughter an object that would not melt in her hands would be given billions of dollars to marry her. Three extremely intelligent and handsome young men took up the challenge. The first brought a very heavy steel rod, But alas, when the she touched it, it completely melted in a matter of seconds. He sadly went away. The second brought a beautiful diamond, knowing diamonds were one of the hardest substance in the world and would not melt. But alas, once she held it in her hand, it melted. He too was sent away disappointed. So now, there was one left He was very nervous & sweating. He approached the daughter & said, “put your hand in my pants pocket and feel what is in there." She did exactly what he asked. She felt something very hard. She held it in her hand, squeezing it as hard as she could. It did not melt & remained extremely hard. Her father was overjoyed. Everybody was overjoyed. She was finally cured. Nothing never, ever melted in her hand again. They married and they both lived happily ever after, raising a wonderful family. Question: What was in the the groom’s pants pocket??? Answer below ↓ M&Ms of course! They melt in your mouth, not in your hand. What on earth were you thinking?
    • asilverblazer
      Wow I'm in a pickle. (Broke down truck) and a story.

      By asilverblazer · Posted

      There's a bunch of tea leaves that you've read, but in any case the delayed timing is unusual. Not sure how that relates to the rich at idle vs. 'normal' while driving.   If you're in this deep, might be worth investigating, and re-learning the sensor. What have you got to lose? Plus, it properly fixes the timing cover leak.
    • asilverblazer
      Wow I'm in a pickle. (Broke down truck) and a story.

      By asilverblazer · Posted

      The only problem I have seen this cause is longer crank times. 
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      Injector is being sent off today for rebuild and I estimate I'll have it back in 10 days or so.   It may not be the injector...of course...now that I've torn down the intake again. But, let's rule out the injector and replace those spider legs that have been almost rubbed through.   The truck has always had negative timing and I'm reading "normal" timing at warm idle should be +16 or so. I'm negative 16 to 25 or more, and it's always been like that since I bought it.   A light turned on upstairs last night in the old noggin. Rare, I know...   This will be wild, if it turns out to be the cause!   In 2001, according to the old service documentation, the muffler was replaced. Why? I have no idea, it wouldn't have been rusted through by then. But they did a crappy job.   In 2019, another shop replaced it and noted the prior install was poorly done on the work order. "Exhaust system vibrates on crossmember". Except...I guess they just left it be? I believe the husband, the couple who were original owners, had passed by then. Maybe she said it's just not worth it to have the exhaust system fixed and declined repairs. Very few miles were driven between 2019 and 2025.   The exhaust system vibrates heavily on the crossmember and you can feel it and REALLY hear it, even today. Not always, but at idle, it gets going pretty good sometimes.   What if....   ....What if that's enough to trigger one or both of the knock sensors? Could it be tricking the sensors into sensing knock, so it's pulling timing aggressively? Pulling timing heavily means it's firing after the piston reaches full height which means incomplete burn which means the O2 sensor is sensing a rich condition, which means I've been chasing my tail, and what I thought was an inconsequential problem (janky exhaust) has been THE issue for this truck for 25 solid years?   That would be wild. Maybe it IS wild.   The service documentation thereafter, for years, shows visits for rough idle, replacing O2's, replacing the cat, replacing plugs and wires, a misfire condition, like they could never solve the issue. The injector has been replaced 4 times in 80k miles, that's just crazy.   The secondary theory....   The engine has clearly had a leak at the front seal for a very long time (the greasy trench...). I think the truck changed hands quickly ~2025 because there's Napa receipts from someone I don't recognize in the ownership history. They apparently replaced the timing cover seal, and they did a terrible job. There's RTV smeared all over and the leak I had reduced to a weep by snugging the front oil pan bolts is now a leak again.   HOWEVER....I read about replacing the crankshaft position sensor. Any time the ckp sensor is disturbed or timing cover is removed, the truck requires relearning, and that can only be done through a bi-directional scan tool. Skippy with the RTV probably didn't do the relearn procedure is my guess. His scan tool is lost in a pile of RTV goo somewhere.   So, it's very possible the sensor has been disturbed and the truck is just running on the old learn data but not setting a code for anything. The distributor has since been replaced and so has the camshaft position sensor, so all bets are off for that thing.   In the theme of one step forward, two steps back, I returned the accumulator for the AC. The gal I've been working with at O'Really's has been great. She refunded it under manufacturer's defect and we compared it to the replacement I ordered, and sure enough, the replacement is machined very differently (and a gauge actually fits on it!).   Got it home, installed it, started vacuuming it down.... and I couldn't get good vacuum.   The high side service port, where I replaced the old GM ball valve suspecting that was a source of the previous leak....well, I've clearly exposed whatever pre-existing crack in the line where the service port is welded, and made it much worse. Blessing in disguise? Except there goes another $25, now I'm waiting for a replacement AC line.   In 10-ish days ALL the parts will be here. Rebuilt injector, new exhaust system, new cat, new high pressure AC line.   Oh, did I mention the squeaking ISN'T coming from the AC pump? The truck still squeaks when started, and there were words after I started it with the new AC pump installed. But, there was more to replacing the AC pump for just a squeak. A truck with good working AC is something of value, for the comfort alone.   I've ordered a new harmonic balancer because, 30 years is a good run for one of those. Rule it out. The squeak may be something more sinister, though. I'm worried about that ckp sensor and if it was shimmed correctly, or if the timing set was installed correctly. The squeak may be coming from UNDER the timing cover.   At this point, once I get it put back together, I'm thinking I'll take a 50 mile victory lap and then promptly put it up for sale. This truck is cursed. Betty, from beyond the grave, doesn't want anyone messing with her Blazer. Or maybe she's getting revenge for 30 years of shop visits with that thing.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...