Vibrations over 70 MPH - Chevy and GMC Duramax Diesel Forum

2011+ LML Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 1453 (permalink) Old 11-06-2011, 07:36 AM Thread Starter
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Vibrations over 70 MPH

I have a 2011 Danali HD 2500 with 18000 miles. When I bought my truck in January I had a vibration over 73 MPH. Not sure where it's coming from. I thought it was the shaft out of balance or wheel out of balance. The dealer told me this is normal but Im beginning to believe otherwise. It is perfect from 0-70. Anyone else having this problem?
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post #2 of 1453 (permalink) Old 11-06-2011, 07:43 AM
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I've had my truck up to 95 and never any type of vibration, its a 2008. That was before and after all I've done to it.

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post #3 of 1453 (permalink) Old 11-06-2011, 07:49 AM Thread Starter
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That's what I thought. He told me that all HD2500 had this problem. This vibration gets bad. Very annoying. Anyone else, or is it just me.
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post #4 of 1453 (permalink) Old 11-06-2011, 07:53 AM
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Fill out your Sig so we know exactly what's on the truck, and does the vibration go away, did you buy the truck new or used, has it been there since day one
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2008 Chevy 2500HD LTZ CC/SB LMM
NorCalTruck Stage 5 Cognito Leveling Kit - Cognito UCA, Fox Resi Shocks, Rare Parts HD Tie Rods, Cognito HD Swaybar Endlinks and HD pitman and idler arms.
BMF M80 death metal wheels 17x9 Nitto TeraGrappler 285/70-17
EFI LIVE with locking dsp5 switch tuned by Kory Willis
Edge CTS Insight with pyrometer, MBRP SS Turbo Back 4" exhaust no muffler w/ 5" tip, EGR Block Plate
Transgo Jr, PCV Reroute, Resonator Plugged
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post #5 of 1453 (permalink) Old 11-06-2011, 07:59 AM
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did they say anything about "frame beaming"

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post #6 of 1453 (permalink) Old 11-06-2011, 09:10 AM
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Sounds like a bad tire or out of balance tire, have them all balance checked and rotate positions. My 3500 is smooth but don't usually go over 70 mph,speed limits are lower here due to the sharp corners(and lots of them)here.

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post #7 of 1453 (permalink) Old 11-06-2011, 10:38 AM
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Ive had the same problem and am now at 5000 miles and its super aggrivating on a long trip. It could just be an out of balance tire idk I havent taken it back. Those guys pissed me off right from the get go. There was an earlier thread having to do with a wheel problem as well. Might want to search for it.

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post #8 of 1453 (permalink) Old 11-06-2011, 01:11 PM Thread Starter
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I bought the truck new. It has had vibrations from the day I drove it off the lot. I'll drop it at the dealer since its under warranty. Rebalance then rotate and Ill go from there. Speed limit is 70 mph in Tennessee... I drive 80 miles a day at 75 mph so you can imagine how annoying this is.
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post #9 of 1453 (permalink) Old 11-06-2011, 03:26 PM
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Yeah man. I may take mine in this week to. It needs it. Let me know if that corrects it.

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post #10 of 1453 (permalink) Old 11-06-2011, 04:26 PM
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By the way guys, these trucks are notorious for having the back wheels "hop" at freeway speeds. If you find a rough highway you can sometimes watch the tailgate bounce because there isn't enough weight in the back. Not saying this is your problem but I threw a couple hundred pounds of sand in the bed and my problem fixed itself...

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