Weird vibration at around 55mph

Chevy96 · 10-31-2009, 09:42 PM

Hey guys the truck is a 1996 chevy silverado 5.7 v8 with a 4l60e, when i reverse and stop and put the truck into drive i hear aloud CLUNK from underneath the body, and when i reach about 55 it starts vibrating pretty bad. Could this be something to do with my drive shaft ?
Thanks in advance,
Tye

supjim1981 · 10-31-2009, 10:27 PM

Could be bad u-joint, or lack of grease on the slip yoke and u-joints.

Chevy96 · 11-02-2009, 07:28 PM

bump.. any more advice guys. can i lube the u-joint myself ?

supjim1981 · 11-02-2009, 08:08 PM

As long as it has a grease fitting.

pgemma · 11-02-2009, 09:29 PM

Could be a u joint or motor mount.

***Matt*** · 11-03-2009, 08:18 AM

Sounds like a ujoint. If it is, the joint needs to be replaced, not lubed. Any ujoint with any amount of play in it is done and needs a replacement.

**Hit Man X** · 11-04-2009, 04:54 AM

I am going with Ujoint. Had a few vehicles that would vibrate with speed.

Of course inspect the balance of the tyres as well as the tyres themselves for tread issues.

badlandsblzr · 11-05-2009, 01:13 AM

ever seen what happens if you don't fix it.. a goof i knew with an old bronco, mid 80's unit, drive shaft came up through the rear floor panels.. hit the ground and shot up with enough force to split the floor and stay there..

HighRollerRich · 11-05-2009, 01:17 AM

U JOINT!

happened to me last weekend. it was so baaaaad

the ujoint had broken off and dug itself a new hole into my tcase rear output shaft Yoke.

Replace asap before it breaks and ur left stranded

the clunk from switching gears is a give away

10-31-2009, 09:42 PM	#1
Chevy96 GMFS Member Join Date: Aug 2007 Location: Texas Name: Tye Age: 19 Posts: 131	Weird vibration at around 55mph Hey guys the truck is a 1996 chevy silverado 5.7 v8 with a 4l60e, when i reverse and stop and put the truck into drive i hear aloud CLUNK from underneath the body, and when i reach about 55 it starts vibrating pretty bad. Could this be something to do with my drive shaft ? Thanks in advance, Tye
	Current mods: 2" drop shackle, 20x8.5 MB Senna , di/do dynomax dumped, debadged, custom two tone bench seat Future Mods: 6.0 w/ TR224 cam, longtube headers, and a tune by nelson, 2/4 drop

10-31-2009, 10:27 PM	#2
supjim1981 I don't give a fuck Chevrolet Owner Join Date: Oct 2009 Location: here Name: Branden Posts: 39	Re: Weird vibration at around 55mph Could be bad u-joint, or lack of grease on the slip yoke and u-joints.

11-02-2009, 07:28 PM	#3
Chevy96 GMFS Member Join Date: Aug 2007 Location: Texas Name: Tye Age: 19 Posts: 131	Re: Weird vibration at around 55mph bump.. any more advice guys. can i lube the u-joint myself ?
	Current mods: 2" drop shackle, 20x8.5 MB Senna , di/do dynomax dumped, debadged, custom two tone bench seat Future Mods: 6.0 w/ TR224 cam, longtube headers, and a tune by nelson, 2/4 drop

11-02-2009, 08:08 PM	#4
supjim1981 I don't give a fuck Chevrolet Owner Join Date: Oct 2009 Location: here Name: Branden Posts: 39	Re: Weird vibration at around 55mph As long as it has a grease fitting.

11-02-2009, 09:29 PM	#5
pgemma 00Silverado Chevrolet Owner Join Date: Sep 2007 Location: Canton, Ohio. Morgantown, WV for school Name: Paul Gemma Age: 21 Posts: 1,471	Re: Weird vibration at around 55mph Could be a u joint or motor mount.
	2000 Silverado Z71 5.3 K&N intake. Dual Flowmaster. Cranked Torsion bar's and 285/75/16 BFG's

11-03-2009, 08:18 AM	#6
*Matt* Word Chevrolet Owner Join Date: Mar 2004 Location: Dallas, TX Name: Ill Age: 23 Posts: 10,839	Re: Weird vibration at around 55mph Sounds like a ujoint. If it is, the joint needs to be replaced, not lubed. Any ujoint with any amount of play in it is done and needs a replacement.

11-04-2009, 04:54 AM	#7
Hit Man X 1985 300SD TURBO-DIESEL Chevrolet Owner GMC Owner Cadillac Owner Hummer Owner Join Date: Jan 2004 Location: Hell Name: Doktor Eric von Broski Age: 29 Posts: 13,918	Re: Weird vibration at around 55mph I am going with Ujoint. Had a few vehicles that would vibrate with speed. Of course inspect the balance of the tyres as well as the tyres themselves for tread issues.
	MINE IS ASTRAL SILVER The superior man is modest in his speech, but exceeds in his actions. - Confucius '01 Chev Z71 LT - '83/84/85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 280S Euro '80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 560SEL - '98 Volvo V90 Let's face it, the red hair... makes 'em wet. © THE AVERAGE PERSON IS A MORON

11-05-2009, 01:13 AM	#8
badlandsblzr gm and chev owner Join Date: Oct 2009 Location: alberta canada Name: angel Posts: 43	Re: Weird vibration at around 55mph ever seen what happens if you don't fix it.. a goof i knew with an old bronco, mid 80's unit, drive shaft came up through the rear floor panels.. hit the ground and shot up with enough force to split the floor and stay there..
	gotta love a dirty truck, means you had fun..

11-05-2009, 01:17 AM	#9
HighRollerRich GMFS Member Chevrolet Owner Join Date: Sep 2007 Location: Waco, Texas. Baylor Name: Richard Averitt Age: 21 Posts: 1,970	Re: Weird vibration at around 55mph U JOINT! happened to me last weekend. it was so baaaaad the ujoint had broken off and dug itself a new hole into my tcase rear output shaft Yoke. Replace asap before it breaks and ur left stranded the clunk from switching gears is a give away
	1999 Chevrolet Tahoe 4x4. Last Year of the 2 Door Tahoe

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