SHIMMY/SHAKE what could it be? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MIKE'67 · 10-05-2003, 10:03 AM

My '85 Suburban developed a very annoying rough ride. It occurs at about 55 - 60 MPH. I had a universal joint replaced but no help. I have changed the wheels and had them balanced 3 times without any luck. I thought it was a tire but my Goodyear dealer says they all balance. By the way each time I had them balanced they said they all needed balanced. I used two different shops. Any suggestions what else to look for? Thanks.

*Zilverado* · 10-05-2003, 10:35 AM

My first thought would be unbalanced tires, too. I just went through that with our Pathfinder. We got 4 new BF Goodrich All-Terrains put on this spring. Recently I noticed a vibration, brought the wheels in to be rebalanced and was told the same thing - "they were all out of balance" - go figure.

My other thought would be drive shaft. Take a look to see if it has thrown a weight. It should be noticable on the shaft if a weight is missing.

Just my $.02.

Mike76251 · 10-05-2003, 01:47 PM

I would bet the dealer says that because he doesn't want to replace the tire that is bad.
Keep in mind that he is a mechanic and they are ALL crooks.
Like the old sain' goes;
When you are too sorry to be a cop...........you become a mechanic.

**old Rusty C10** · 10-05-2003, 02:26 PM

its gotta be a tire definit cure change out the tires one by one witht he spare and see if the vibration goes away or lessens or something that way you can try to isolate it some

78SilveradoSWB · 10-05-2003, 02:36 PM

Could one of the wheels be bent or out of round?

apstguy · 10-06-2003, 12:20 AM

I have the same type of problem. I balanced them all and it still is there. I had a tire blow out and get replaced and it is almost all the way gone.

apstguy · 10-06-2003, 12:22 AM

Just a thought - might be a bald spot on one or more of the tires.

BTW: I had replaced all my tires for a while with another set and it made it worse.

10-05-2003, 10:03 AM	#1
MIKE'67 Registered User Join Date: Nov 2001 Location: Albertville, Alabama USA Posts: 299	SHIMMY/SHAKE what could it be? My '85 Suburban developed a very annoying rough ride. It occurs at about 55 - 60 MPH. I had a universal joint replaced but no help. I have changed the wheels and had them balanced 3 times without any luck. I thought it was a tire but my Goodyear dealer says they all balance. By the way each time I had them balanced they said they all needed balanced. I used two different shops. Any suggestions what else to look for? Thanks. __________________ 1977 Short Stepside, black, 350/350. Located in Albertville, Alabama.

10-05-2003, 02:26 PM	#4
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	its gotta be a tire definit cure change out the tires one by one witht he spare and see if the vibration goes away or lessens or something that way you can try to isolate it some __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

10-05-2003, 02:36 PM	#5
78SilveradoSWB Senior Member Join Date: Apr 2002 Location: Beaverton, OR Posts: 1,615	Could one of the wheels be bent or out of round? __________________ Mitch 1978 Chevrolet Silverado C 10 454 BB, TH400

10-06-2003, 12:20 AM	#6
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	I have the same type of problem. I balanced them all and it still is there. I had a tire blow out and get replaced and it is almost all the way gone. __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

10-06-2003, 12:22 AM	#7
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	Just a thought - might be a bald spot on one or more of the tires. BTW: I had replaced all my tires for a while with another set and it made it worse. __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

10-05-2003, 10:35 AM	#2
Zilverado Account Suspended Join Date: Nov 2002 Location: Winnipeg, Manitoba, Canada Posts: 798	My first thought would be unbalanced tires, too. I just went through that with our Pathfinder. We got 4 new BF Goodrich All-Terrains put on this spring. Recently I noticed a vibration, brought the wheels in to be rebalanced and was told the same thing - "they were all out of balance" - go figure. My other thought would be drive shaft. Take a look to see if it has thrown a weight. It should be noticable on the shaft if a weight is missing. Just my $.02.

10-05-2003, 01:47 PM	#3
Mike76251 Senior Member Join Date: Mar 2003 Posts: 2,499	I would bet the dealer says that because he doesn't want to replace the tire that is bad. Keep in mind that he is a mechanic and they are ALL crooks. Like the old sain' goes; When you are too sorry to be a cop...........you become a mechanic.



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