another question virbration???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rddaves54 · 09-24-2010, 11:05 AM

I have a vibration at 45 miles an hour and it levels out or goes away around 55 miles an hour. I checked front tires, exhaust, motor mounts, u-joints, carrier center drive shaft bearing for tightness and they all seem good.

I was wondering if this has occurred for anyone else and what I might check next. I have had the truck finished and on the road (not much though) for about 12 months and when I first started driving it this was not going on.

When it goes to vibrate or shudder (I am not sure which) I can put it in neutral and it will stop and smooth out would this maybe be transmission related? I am going to look at transmission mount and see if it is tight.

cdowns · 09-24-2010, 12:22 PM

i'd start with wheel balance

Shaky · 09-24-2010, 02:47 PM

If all else fails, check your harmonic balancer and make sure the outer ring didn't move relative to the inner.

09-24-2010, 11:05 AM	#1
rddaves54 Registered User Join Date: Nov 2008 Location: Columbia SC Posts: 231	another question virbration???? I have a vibration at 45 miles an hour and it levels out or goes away around 55 miles an hour. I checked front tires, exhaust, motor mounts, u-joints, carrier center drive shaft bearing for tightness and they all seem good. I was wondering if this has occurred for anyone else and what I might check next. I have had the truck finished and on the road (not much though) for about 12 months and when I first started driving it this was not going on. When it goes to vibrate or shudder (I am not sure which) I can put it in neutral and it will stop and smooth out would this maybe be transmission related? I am going to look at transmission mount and see if it is tight. __________________ Chief mechanic for my, 54 Belair, 64 Corvair, 72 C/10Fleetside and 2002Tahoe. John 14:6 Jesus said, "I am the way, the truth, and the life. No one comes to the Father except through Me. My Book "Why Cancer is Not Bad Luck" by WestBow press

09-24-2010, 12:22 PM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: another question virbration???? i'd start with wheel balance __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-24-2010, 02:47 PM	#3
Shaky Six in a row makes it go... Join Date: Mar 2009 Location: Vacationland: Maine Posts: 1,346	Re: another question virbration???? If all else fails, check your harmonic balancer and make sure the outer ring didn't move relative to the inner. __________________ 67 C20 long step resto: http://67-72chevytrucks.com/vboard/s...d.php?t=342086 66 C10 long step build: http://67-72chevytrucks.com/vboard/s...=1#post3814790 CT to Alaska in a 67 C10: http://67-72chevytrucks.com/vboard/s...d.php?t=399224 “The height of sophistication is simplicity." - Clare Boothe Luce



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