Driveline Vibration under deceleration

rmeitz167 · 06-28-2008, 06:24 PM

When i let off the gas you can hear vibration. At first it sounded like it was in the front of the truck but when i opened the rear sliding window it sounds like its in the driveshaft/rear. Any ideas?

Deeze49686 · 06-29-2008, 09:05 PM

rear u-joint rusted.

supertrucker1978 · 06-29-2008, 09:08 PM

More than likely its the rear u-joints. Thats where I would start.

tt85_GM · 06-29-2008, 11:40 PM

Wow what is up with all these driveshaft issues

rmeitz167 · 07-03-2008, 01:51 PM

k ill check out the u joints

rmeitz167 · 07-03-2008, 10:50 PM

where can i buy new rear joints?

tt85_GM · 07-03-2008, 10:55 PM

Any auto parts store.

Did you find anything wrong?

kamesama980 · 07-05-2008, 12:41 AM

could be the diff... the gear tooth angle is such that under decel, the pinion is pushed toward the diff carrier. if the pinion bearing goes bad, the pinion travels toward the carrier and if it's bad enough, it'll hit it. grab the rear u joint and shake... if hte u-joint shakes, replace it, if the pinion shakes, you need a rear end rebuild or a new rear end.

http://s29.photobucket.com/albums/c2...t=DSC02759.jpg

rmeitz167 · 07-06-2008, 06:34 PM

Quote: Originally Posted by kamesama980

could be the diff... the gear tooth angle is such that under decel, the pinion is pushed toward the diff carrier. if the pinion bearing goes bad, the pinion travels toward the carrier and if it's bad enough, it'll hit it. grab the rear u joint and shake... if hte u-joint shakes, replace it, if the pinion shakes, you need a rear end rebuild or a new rear end.

http://s29.photobucket.com/albums/c2...t=DSC02759.jpg

Anybody have a pic of what exactly the U joint is and where it is on our trucks? As far as the transmission back goes i know absolutely nothing

06-28-2008, 06:24 PM	#1
rmeitz167 my truck is slow Age: 18 Join Date: Dec 2005 Posts: 391 Location: PA User is: OffLine	Driveline Vibration under deceleration When i let off the gas you can hear vibration. At first it sounded like it was in the front of the truck but when i opened the rear sliding window it sounds like its in the driveshaft/rear. Any ideas?
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06-29-2008, 09:05 PM	#2
Deeze49686 I'm slap happy, bitches! Age: 35 Join Date: Dec 2007 Posts: 1,217 Location: User is: OffLine	Re: Driveline Vibration under deceleration rear u-joint rusted.
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06-29-2008, 09:08 PM	#3
supertrucker1978 Back.....In black????? Age: 30 Join Date: Feb 2008 Posts: 2,183 Location: Princeton MN User is: OffLine	Re: Driveline Vibration under deceleration More than likely its the rear u-joints. Thats where I would start.
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06-29-2008, 11:40 PM	#4
tt85_GM I AM CANADIAN Age: 23 Join Date: Feb 2006 Posts: 3,693 Location: Ont. Canada User is: OffLine	Re: Driveline Vibration under deceleration Wow what is up with all these driveshaft issues
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07-03-2008, 01:51 PM	#5
rmeitz167 my truck is slow Age: 18 Join Date: Dec 2005 Posts: 391 Location: PA User is: OffLine	Re: Driveline Vibration under deceleration k ill check out the u joints
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07-03-2008, 10:50 PM	#6
rmeitz167 my truck is slow Age: 18 Join Date: Dec 2005 Posts: 391 Location: PA User is: OffLine	Re: Driveline Vibration under deceleration where can i buy new rear joints?
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07-03-2008, 10:55 PM	#7
tt85_GM I AM CANADIAN Age: 23 Join Date: Feb 2006 Posts: 3,693 Location: Ont. Canada User is: OffLine	Re: Driveline Vibration under deceleration Any auto parts store. Did you find anything wrong?
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07-05-2008, 12:41 AM	#8
kamesama980 The Eye is watching you!! Age: 23 Join Date: Nov 2007 Posts: 765 Location: dekalb, IL, USA User is: OffLine	Re: Driveline Vibration under deceleration could be the diff... the gear tooth angle is such that under decel, the pinion is pushed toward the diff carrier. if the pinion bearing goes bad, the pinion travels toward the carrier and if it's bad enough, it'll hit it. grab the rear u joint and shake... if hte u-joint shakes, replace it, if the pinion shakes, you need a rear end rebuild or a new rear end. http://s29.photobucket.com/albums/c2...t=DSC02759.jpg
	[Reply w/Quote]

07-06-2008, 06:34 PM	#9
rmeitz167 my truck is slow Age: 18 Join Date: Dec 2005 Posts: 391 Location: PA User is: OffLine	Re: Driveline Vibration under deceleration Quote: Originally Posted by kamesama980 could be the diff... the gear tooth angle is such that under decel, the pinion is pushed toward the diff carrier. if the pinion bearing goes bad, the pinion travels toward the carrier and if it's bad enough, it'll hit it. grab the rear u joint and shake... if hte u-joint shakes, replace it, if the pinion shakes, you need a rear end rebuild or a new rear end. http://s29.photobucket.com/albums/c2...t=DSC02759.jpg Anybody have a pic of what exactly the U joint is and where it is on our trucks? As far as the transmission back goes i know absolutely nothing
	[Reply w/Quote]

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