Vibrations over 70 MPH - Chevy and GMC Duramax Diesel Forum
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Old 11-06-2011, 08:36 AM   eBay Motors  #1 (permalink)
bss
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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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Old 11-06-2011, 08:43 AM   eBay Motors  #2 (permalink)
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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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Old 11-06-2011, 08:49 AM   eBay Motors  #3 (permalink)
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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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Old 11-06-2011, 08:53 AM   eBay Motors  #4 (permalink)
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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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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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Old 11-06-2011, 08:59 AM   eBay Motors  #5 (permalink)
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did they say anything about "frame beaming"
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Old 11-06-2011, 10:10 AM   eBay Motors  #6 (permalink)
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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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Old 11-06-2011, 11:38 AM   eBay Motors  #7 (permalink)
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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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Old 11-06-2011, 02:11 PM   eBay Motors  #8 (permalink)
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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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Old 11-06-2011, 04:26 PM   eBay Motors  #9 (permalink)
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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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Sold-2013 ECLB DRW stock
Sold-2009 LMM CCSB- Twinned
sold-11 2500 LML CCSB stock
sold-06 2500 LBZ CCSB twin turbo
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Old 11-06-2011, 05:26 PM   eBay Motors  #10 (permalink)
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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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