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#1
06-15-2005, 07:01 PM
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Help Me Please with vibration
I have a 2001 blazer 4 door, 4.3 lt engine, it has 100,000 km on it. The problem I am having is when i drive the highway for a half hour or more and exit the highway, I get a vibration from the floor area. This only happens when the truck is warmed up, , it seems to do it more when turning left or right, but will do it on the straight. After comming off the highway onto the city streets and pully away from stop signs or turning corners real slow and using very little gas this is when it starts.
I AM LOST TO WHAT IT COULD BE. I AM HOPING ALL YOU CHEVY PEOPLE CAN HELP ME. PAUL 
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#2
06-16-2005, 09:13 AM
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Re: Help Me Please with vibration
Quote:
Not sure but when is the last time you had your drive line serviced ? I.e. Rear-end....could be low.... Could be wheel bearings.....so we'd need to know if it's coming from the front or rear....when turning (putting a load on) a particular wheel could bring out the wheel bearing noise. When is the last time you replaced them ? (if ever)...
__________________
1999 Blazer LS 4WD 4.3L "W" 2004 Silverado 2500HD Duramax 
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#3
06-16-2005, 11:43 AM
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it seems to be mid ship, and only when you start off ever so slow, barely any gas at all. not as much a noise as a vibration or small shimmy, it only last for a second
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#4
06-16-2005, 03:23 PM
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Re: Help Me Please with vibration
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4WD ? Do you have 4-auto, as a selection on your 4wd ? Reach under , loosen the fill plug on transfer case and check what kind of fluid (color) is in the Transfer case if 4WD...... Wolfox or others can chime in on more technical details.... 
__________________
1999 Blazer LS 4WD 4.3L "W" 2004 Silverado 2500HD Duramax
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#6
06-16-2005, 04:08 PM
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Re: Help Me Please with vibration
More improtantly, I would start with the simple stuff. Ihad the same trouble with mine when i first got it. It just needed a tune-up.
 It would wobble and miss just so slightly under light throttle when pulling away from a complete stop. As I said, easily fixed, search this forum using the search feature in the upper-right hand corner to find "Tune UP" - loads of info here on what it entails.
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#7
06-16-2005, 05:01 PM
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Re: Re: Help Me Please with vibration
Quote:
 Everytime I see that Avitar I laugh out loud haha
__________________
1999 Blazer LS 4WD 4.3L "W" 2004 Silverado 2500HD Duramax
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#9
06-16-2005, 11:36 PM
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Paul, Have your rear diff fluid changed. I believe there is a friction modifier additive as well, but check with the dealer. I had the same problem you mentioned. 1-2 hours of highway driving, get off highway, stop at light, take off and I would get a shudder. The shop foreman at the dealer told me it was the rear diff fluid. I thought he was blowing smoke up my ass, but I had it changed with the additive and have not had the problem since. I'm at 99,000 km's now.
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#10
06-17-2005, 08:58 AM
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Re: Re: Help Me Please with vibration
Quote:
I know the male enhancement commercial....that's why I laugh haha 
__________________
1999 Blazer LS 4WD 4.3L "W" 2004 Silverado 2500HD Duramax
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#12
06-17-2005, 07:43 PM
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Re: Help Me Please with vibration
thank you for the info, i will have that checked, it sounds like the same thing you were having, I will let you know, I am heading to Ont on vacation next month and would like to have it fixed before I hit the road. Thanks , paul
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