2013 Chevy truck vibration?

In most all cases I have read about it was defective tires. The new stiff frame seems to make any out of balance tire much more noticeable.
http://www.gm-trucks.com/forums/topic/158371-2014-2500hd-ltz-vibration-passenger-seat-bobble-head/

There have been alot of posts on this issue. Fixes have been all over the board from tire replacement to high speed wheel balancing to who knows what. Google "GM Truck Frame Beaming" and you will get links to various forums for reading.

Thanks -- will check it out. Been truck shopping and found a 2013 XCab 2500HD 4x4 for a real nice price. But, remembered that vibration issue and want to buy NO headaches...

I run a '03 2500 now, best truck I ever owned, but its getting a bit tired for long trips. Worry a little when far from home ...

It seems to be most prevalent on 2009-2012 Extended/crew cab with the Z-71 package and the 5.3L engine. There have been very few reports of the problem on the 6.2L package or the diesel trucks.

monkey44 wrote:
Some time ago, I recall reading about an issue with some kind of frame vibration in new trucks -- can't remember if it was the 2013 GM or not.

I know a few guys on here had a problem with something - and dealer could not figure it out ... several actually. It's sticking in my brain, but I can quite grab it ...

Anyone recall it - and the fix result ... Thanks ...

Or point me to that tread - those threads?

It's called frame beaming and GM has put out a service bulletin, PIT3009 on it. My 2009 2500HD had it and my dealer fixed it even though it wasn't part of the recall.

#PIT3009L: Suspension Vibration Or Frame Beaming At 40-60 MPH (64-80 KM/H) - keywords front rear shake shock spring tire - (Dec 3, 2009)


Subject: Suspension Vibration or Frame Beaming at 40-60 mph (64 - 80 km/h)


Models: 1999-2009 Chevrolet Silverado and Silverado Classic

1999-2009 GMC Sierra and Sierra Classic
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Beam shake vibration is usually felt in the seat and occurring at speeds between 40-50 mph (64 - 80 km/h). Hertz readings using an EVA tool are normally between 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 beam shake may vary from vehicle to vehicle. To determine if the concern is beam shake, please perform the following:

•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.
•Place 200-500 pounds in the pickup bed between the closed tailgate and the wheel wells. A beaming condition should dissipate.
Note: Tires with excessive Radial Force Variation (RFV) or out-of-roundness can intensify the frame beaming concern. The following radial force variation numbers should be used as a guide:

P-Metric tires (2wd 1500)
12 lbs or less

Nice informative post Allen :B

Yes - thanks ... excellent

First time I've ever heard of frame beaming, I own a 2008 extended colorado and have had this problem for the last 5,000 miles or so. Didn't know what it was. Thought it might be a bad bearing somewhere in the driveline. will need to persue this. I hope there's a fix. I don't want to have to carry extra weight to avoid the seat of my pants vibrating like a cell phone on mute

Wasn't the repair to replace the rear cab mount bushings?

Engineer9860 wrote:
Wasn't the repair to replace the rear cab mount bushings?

That is "one" of a multitude of so called repairs for the 2009-2012 models. IMO, GM has NO idea what the problem is and what needs to be done to fix it.