Shake or Vibration Issues

[2strokesmoke]

Frame Beaming was a known issue in the past models, they GM have it all over again in the 2014-2017 models.

 

Condition/Concern:

 

Beam shake vibration is usually felt and occurring at speeds between 40-50 mph (64-80 km/h). Hertz readings using an EVA tool are normally bewtween 8-24 HZ. This condition is most common on extended cab and crew cab models but has also been noted in other models.

 

Recommendation/Instructions:

 

The severity of the beam shake may vary from vehicle to vehicle. To determine if the concern is beam shake, please perform the following:

 

1. Test drive vehicle to confirm the condition. A beam shake condition will usually respond to concrete type pavements more than asphalt, so the vehicle should be driven over both surfaces if possible.

 

2. Place 200-500 pounds in the pickup bed between the closed tailgate and the wheel wells. A beaming condition should dissipate.

 

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If the concern is determined to be beam shake, this a characteristic of the vehicle. GM Engineering has released updated body mounts to reduce this concern for the Crew and Extended Cab Models. There will be no changes made to the Regular Cab Models.

Above info was taken from last gen...model.

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It is more pronounced now from high tensile steel being used in their frames!

 

Thxs

Edited February 22, 2017 by 2strokesmoke

[daleone3]

I am told by a GM employee the issue is "resolved " for 2017 models. I asked what was fixed and was told the fix was dampening of every drive and suspension component so it is not fixed but more buried across dampening components. Not looking for an argument-just sharing info that was shared at the dealer level by a GM engineer brought in site to address issues in 2016 models that were coming back with recurring issue

 

 

Sent from my iPhone using Tapatalk

[2strokesmoke]

No.....part numbers are the same, only one part number changed as of yet?

Don't want a vibrator..... they know whats wrong....light weight high tensile frame steel allows vibrations to migrate throughout the cab and steering wheel. Solution is cab mount change, melt sheats throughout cabin body panels, and energy dampening frame stiffeners to reduce resonance of driveline components.

 

This is why they try to get tires road forced to get them lower on the resonance scale, same thing for driveshafts...ect! This gets the cabin and steering wheel within tolerable levels. However anything changes like new tires it goes back to the same problem.

 

I understand this problem, and it is cheaper to hang a few owners out to dry then to get a real fix in place!

Owners will be told the vehicle preforms as intended.....! Owners should ask about Frame beaming being the real issue here. Adding weight, and clamping plate metal to frame members will reduce vibration considerably for proof and testing.

 

Education trumps over bull*hit.

[Takeda]

Proof that it is a frame resonance issue that can't be pinpointed?

 

 

http://www.caranddriver.com/news/2019-chevrolet-silverado-1500-spy-photos-news?src=ha_m&mag=cdb&dom=fb

 

I find it hard to believe GM would be doing an "all new" frame after only a 5-6 year run.

 

3 possibilities: A stronger frame is needed for the aluminum body, they're trying to improve their crash test results, or fix the vibration problem

[rpoffen]

Beam shake vibration is usually felt and occurring at speeds between 40-50 mph (64-80 km/h). Hertz readings using an EVA tool are normally bewtween 8-24 HZ. This condition is most common on extended cab and crew cab models but has also been noted in other models.

 

 

Most people have the vibration at 70-80MPH, so something is different from the older models with frame beaming.

[2strokesmoke]

Most people have the vibration at 70-80MPH, so something is different from the older models with frame beaming.

Resonance occours at different speeds, and differently and individually to each truck. Metal thickness, frame temperamental body mount torqued bolts change range and intensity. Railroad iron can carry a trains energy via a resonance many miles up track. Each metal and its thickness will behave differently.

 

Gm is trying to minimize the energy from the driveline, tires, suspension, and engine and exhaust. GM knows it is cheaper to adjust those items individually and swap out if needed, as a frame swap is not an option economically.

It is this energy from those parts and their interactions with frame metal and body mounts that create these many different droans, and vibrations felt in the cabin and steering wheel.

 

Melt sheets, and tweaks at key points throughout the truck can eliminate many of these vibrations, by the way vibration is actually a byproduct of "energy" release!

 

In a nut shell GM built a light weight strong frame that is also great at transfering energy to the occupant in cabin.

 

GM time to thank your r&d dept for allowing this to span over MY 2014-2015-2016-2017 while your customers live with a madening problem!

Rattles and vibrations are number one after warranty failures by the way GM, then customers eventually leave in disgust.

 

Thxs

[trik396]

Ok so who is going to be the first one to try to dampen vibrations by clamping or bolting a plate of steel to their frame?

[2strokesmoke]

Ok so who is going to be the first one to try to dampen vibrations by clamping or bolting a plate of steel to their frame?

PICO will get you to an area, mass will alter vibrations until it is absorbed. Then you can add melt sheets inside when where possible. Mass dampening products are available research your options.

 

Hint a known area of energy release to body is front of leaf springs.

 

Test your vehicle if you want to find and rid most of your vibrations.

 

Take care

[Bikemobile]

WTH is a melt sheet....?

[2strokesmoke]

Melt sheet is an asphalt resin type of material, that is placed in areas know to cause noise or vibrations. What this does is absorb engine, road, driveline vibrations. It got its name melt sheet as it is usually installed at factory level before a painted car enters the ovens during paint the procedure.

 

Also known as dampening absorbing sheets.

 

Take care

[pickmeup]

Been reading a little on the ford forums and ford is dancing the line too. Not as many as GM it appears but their 15 up trucks seem sensitive to vibration too on a smaller scale . Interesting reading this frame beaming .

[trik396]

I was checking on various Sorbothane products. Interesting stuff but I don't have an exact location of my vibe issue and dont want to spend a ton of money on a crapshoot. I'm going to start with doing something with my rear leafs eventually

[mookdoc6]

It should be much less a problem due to the number of mounts on a Single Cab Vs. Crew Cab. As one of the previous poster mentioned about the steps GM takes to reduce the forces in this order to maintain "Order" instead of chaos!

 

Yet, you will have people on here screaming at top of their lungs....It's not the "FRAME PEOPLE"

 

As I explained, "I did a very inexpensive test that yielded fast enough results nothing scientific and it's FRAME-CABIN-MOUNTS. Everybody agreed and nobody knew why exactly.....Mine does not shake and what makes it different I have not a clue.

[Darth_Vader]

It should be much less a problem due to the number of mounts on a Single Cab Vs. Crew Cab. As one of the previous poster mentioned about the steps GM takes to reduce the forces in this order to maintain "Order" instead of chaos!

 

Yet, you will have people on here screaming at top of their lungs....It's not the "FRAME PEOPLE"

 

As I explained, "I did a very inexpensive test that yielded fast enough results nothing scientific and it's FRAME-CABIN-MOUNTS. Everybody agreed and nobody knew why exactly.....Mine does not shake and what makes it different I have not a clue.

Check your build sheet, you must have gotten a truck with the flexible frame and soft cab mounts RPO codes.

 

Luckily for me when I had new wheels and tires installed and it fixed my vibrations the tire guy let me in on a secret that he actually replaced my whole truck frame for free and solved my problem!

[mookdoc6]

Check your build sheet, you must have gotten a truck with the flexible frame and soft cab mounts RPO codes.

 

Luckily for me when I had new wheels and tires installed and it fixed my vibrations the tire guy let me in on a secret that he actually replaced my whole truck frame for free and solved my problem!

Darth,

 

You have already commented that you spent 1000.00's on Axles only to find out you had a bunk "Rim" I have only commented that "I have no shakes yet, a weekend, gas and beer is all I needed to know what really is causing this problem? To each is own and I know that at any given moment my could shake! Wow.......GM has and is in process of changing the components from how the cab/frame are attached..............A little birdie told me