Shake or Vibration Issues

[4x4 350]

I purchased a set of BF's and they handle much better, but it didn't cure my 43-48mph vibe.

I have programmed afm off, balanced tires, replaced tires, checked the backlash on the ring gear(in spec), and nothing has fixed it. It's not bad, and I have chosen to live with it for now, or until a cure is found or acknowledged.

I'm not gonna let the dealer throw parts at what is obviously a variable issue between trucks, and the service dept have no idea what to do other than what a bulletin tells them to....trained monkeys for the most part. So few mechanics left these days.

I adjusted the air pressure in the tires today and noticed an improvement in my vibration. I notice something in the wheel now but its nothing I want to bring the truck back to the dealer for. They will probably say theres nothing wrong with it. At the point its at now ill live with it

[yojo]

I adjusted the air pressure in the tires today and noticed an improvement in my vibration. I notice something in the wheel now but its nothing I want to bring the truck back to the dealer for. They will probably say theres nothing wrong with it. At the point its at now ill live with it

That is what they hope for!!!!!!!!!

[bmet73]

After the dealer having my truck for almost 2 weeks they replaced 3 tires (2 tires when i bought the truck) and the vibration was gone... for an hour.. its back again. Interesting enough, on my service documentation it said they road forced the tires and it was 6lbs of road force, came back after "letting the bead set" and the same tire tested at 12 lbs?? WTF happened?

[pm26]

I took delivery of my factory order Sierra 1500 Denali right before Christmas and noticed a slight vibration at highway speeds. My truck has the stock 20in wheels with the (less than stellar) Goodyear LS2s. Took it into the dealer this morning, and they force balanced the tires. Now, here is the kicker. They've had several complaints about this, and so they use a force limit setting on the Hunter9700 that makes it more sensitive to problems to prevent repeat complaints. I think they said it was a value of 15lbs instead of the default of 30lbs? I do remember them saying GM doesn't want them to use a value that low, but they still do it to make customers happy. At any rate, using that value, they were able to find one tire was out of round that the default value would have let slide. They replaced the tire, and now vibration is gone.

 

So if you've had your tires force balanced and still have vibrations, check to see what value they used. If its the default like GM wants, see if they will change it to be more sensitive to tire or wheel dimension problems. Hopefully this info helps someone else in time and money.

As I said several times before, road force variation and proper balancing are two different things. You can have a perfectly round tire with zero road force variation, and if the guy doing the balancing balances it wrong for whatever reason, you will still have vibration. Not all dealerships invest in a set of Haweka lug adapters, which enable better balancing and more meaningful road force measurement. In fact, Hunter recommends that such adapters be used for road force measurement. However, they make them optional, and they are pricey, so some dealerships do not buy them. Doing road force measurement involves a pneumatic roller pressing against the wheel with force of about 700 lbs to simulate on the road tire loading. This kind of force applied on a wheel mounted on balancer with only a centering cone through the center hole is not optimal configuration and if the technician does not tighten the screw properly, can result in wheel damage. Hasty mounting using a centering cone on the outside can result in improperly mounted wheel and phony road force readings and incorrect wheel balance.

 

Many here seem to be convinced that if their wheels show low road force variation numbers, this guarantees a well balanced tire. No, it does not. Hunter 9700 machine first measures the road force variation (if that option is selected) , and then imbalance in the tire. The second step is crucial to proper wheel balance. And remember, the larger the wheel diameter, the more difficult it is to balance the wheel correctly if mounted on the machine only with a centering cone and pressure cup. And if the machine is not calibrated properly all bets are off.

Edited January 11, 2015 by pm26

[yojo]

sorry wrong topic

Edited January 11, 2015 by jy2014gmc

[MJFlores]

I should point out that...when I had my 14 GM I was convinced it was tires, but didn't want to invest in new ones "just in case" it didn't fix things. My new F150 has the same tires (GY SRA) and they actually ride pretty nice. I took the family on a nice drive yesterday, 208 miles mostly highway and the truck rode great...very comfortable. And, it was in the teens all day and I averaged 19.4 mpg the whole trip. Love my F150 with it's 5.0!

[MudMutt]

I should point out that...when I had my 14 GM I was convinced it was tires, but didn't want to invest in new ones "just in case" it didn't fix things. My new F150 has the same tires (GY SRA) and they actually ride pretty nice. I took the family on a nice drive yesterday, 208 miles mostly highway and the truck rode great...very comfortable. And, it was in the teens all day and I averaged 19.4 mpg the whole trip. Love my F150 with it's 5.0!

Yo cuz ... Nobody on this site gives a crap about your PoS F150 and how great you think it is. Your posting on the wrong site.

[keakar]

Yo cuz ... Nobody on this site gives a crap about your PoS F150 and how great you think it is. Your posting on the wrong site.

and your posting in the wrong thread, this isn't the "buy chevy for life no matter what" fanboy section.

 

he posted about having the same tires that we have on our trucks and they rode great on his ford and like it or not GM has forced most of us to look at other brands as the only solution to get a good riding truck

 

the only post that doesn't belong here is yours

Edited January 11, 2015 by keakar

[MudMutt]

and your posting in the wrong thread, this isn't the "buy chevy for life no matter what" fanboy section.

 

he posted about having the same tires that we have on our trucks and they road great on his ford and like it or not GM has forced most of us to look at other brands as the only solution to get a good riding truck

 

the only post that doesn't belong here is yours

Yeah okay ... That's not how I am reading it ...

[Silverado 6.2]

Mine rides great with Firestone destination AT, manufactures can get different quality good year tire and i believe Gm went with the shit quality ones.

[PMurray]

Can remember when this forum was for sharing GM product info. Sad to read how it has deteriorated. DON'T FEED THE TROLLS. From now on I'll whisper.

[keakar]

Can remember when this forum was for sharing GM product info. Sad to read how it has deteriorated. DON'T FEED THE TROLLS. From now on I'll whisper.

trolling is exactly what mudbutt did with his post so im glad you said that.

 

MJFlores and Silverado 6.2 posted the exact same way yet there where no posts by anyone telling Silverado 6.2 he shouldn't be posting that.

 

the only thing bringing this thread down is posts like mudmutt made and the people who support such rude posts.

 

but I do agree there are the ford fanboys around that just post BS and their comments are not needed here

Edited January 12, 2015 by keakar

[Silverado-Hareek]

I should point out that...when I had my 14 GM I was convinced it was tires, but didn't want to invest in new ones "just in case" it didn't fix things. My new F150 has the same tires (GY SRA) and they actually ride pretty nice. I took the family on a nice drive yesterday, 208 miles mostly highway and the truck rode great...very comfortable. And, it was in the teens all day and I averaged 19.4 mpg the whole trip. Love my F150 with it's 5.0!

 

I'm glad you're happy with your Ford. A co worker has a 2014 5.0 in burnt orange that looks really nice. But it's apples and oranges what you're saying here. There's no guarantee the Goodyear SR-A tires Ford has are the same quality GM has been putting on their trucks. Even if they were, the F150 has softer suspension than the Silverado so you could very well have the same crappy tires but you just can't feel it as your suspension is dampening it.

[MudMutt]

trolling is exactly what mudbutt did with his post so im glad you said that.

 

MJFlores and Silverado 6.2 posted the exact same way yet there where no posts by anyone telling Silverado 6.2 he shouldn't be posting that.

 

the only thing bringing this thread down is posts like mudmutt made and the people who support such rude posts.

 

but I do agree there are the ford fanboys around that just post BS and their comments are not needed here

 

Yeah, I may have been rude but just to make a point to this guy... Listen, I just traded a 2012 Dodge RAM Hemi Bighorn for my 2014 Silverado. I had a lot of issues with the Ram and even went through the Lemon Law process with it. I am real happy with the Chevy but you don't see me posting on the Dodge RAM Gen 4 site and telling everyone how great Chevy is and how I made the best decision getting rid of the truck when everyone on that site is driving a RAM. I just call it as I see it and you guys are the trolls here ...

[keakar]

 

I'm glad you're happy with your Ford. A co worker has a 2014 5.0 in burnt orange that looks really nice. But it's apples and oranges what you're saying here. There's no guarantee the Goodyear SR-A tires Ford has are the same quality GM has been putting on their trucks. Even if they were, the F150 has softer suspension than the Silverado so you could very well have the same crappy tires but you just can't feel it as your suspension is dampening it.

excellent point