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GMC Jimmy Vibrations

26 messages,  Last post on Feb 04, 2012 at 11:17 AM

You are in the GMC Jimmy Forum.

What is this discussion about? GMC Jimmy, GMC S-15 Jimmy, SUV

Messages Page 3 of 3

#17 of 26 Did you find the problem- i have same problem!! by chispied

Jul 27, 2006 (3:08 pm)

Hi
I have same problem, my is at 220,000, shakes really bad...esp around 90-100k..mine increases the shaking with speed.

#18 of 26 Re: Bad Shake/Vibration 250,000 miles 93 Jimmy [repairdog] by wings_2007

Jul 27, 2006 (5:12 pm)

Replying to: repairdog (Jul 01, 2006 3:32 am)
Thanks for the info. It's been a while since I first posted but I've still got the vibration. Haven't had much time to check the vehicle myself or to check with my mechanic. We have checked the torsion bar mounts and they seem ok. Although I did have to replce them about 150,000 miles ago. We checked the bolts to the frame and everything seems ok. I got some new tires last week (Good Year's) and hope to have them put on this Saturday.
 I will post an update ASAP.

#19 of 26 Re: Bad Shake/Vibration 250,000 miles 93 Jimmy [wings_2007] by repairdog

Jul 29, 2006 (4:30 am)

Replying to: wings_2007 (Jul 27, 2006 5:12 pm)
Rear pinion bearing, U-joints, rear xfer case bearing. Get the tire/wheels force balanced (better machine) that makes sure both are good and heavy areas offset. At 250k its getting old and tired I guess. Finally check those rear drums for out of round - seen that and have to run it on a lift or jack stands to see the oval drum wobble - be careful.

#20 of 26 Re: Bad Shake/Vibration 250,000 miles 93 Jimmy [repairdog] by wings_2007

Aug 20, 2006 (6:42 pm)

Replying to: repairdog (Jul 29, 2006 4:30 am)
Thanks again for your suggestions. I think I finally found the main problem - a bad body mount. I guess my mechanics somehow overlooked it. I decided to crawl under there the other day with a crow bar to get a closer look at things. I noticed the mount near where the front door and fender meet on the passengers side was rusted. (Actually I guess it's the plate that the mount attaches to that's rusted.) So I took the crow bar and discovered I could move the body away from the frame/mount at that spot rather easily. I'm guessing that would give me the horrific vibrations. It should be fixed this week. I will post an update.
Hopefully to say the vibratrion is gone!

#21 of 26 Re: Bad Shake/Vibration 250,000 miles 93 Jimmy [wings_2007] by wings_2007

Aug 23, 2006 (4:11 pm)

Replying to: wings_2007 (Aug 20, 2006 6:42 pm)
Finally after all this time the problem seems to be fixed. The mount was bad, the plate it attaches to was terribly rusted, and the floor board under that was all rusted away (13 years of Michigan winters and road salt will do that). Although you couldn't tell the floor was rusted just by looking. GM puts a rubber mat type thing in that spot of the floor board which holds it together even when rusted. It's defintely not an easy job having to replace the mounting plate and part of the floor but it was well worth it! Now when I hit bumps it's nice and smooth - Or as smooth as can be expected for an SUV with over 250,000 miles on it. I hope top get at least another 100,000 more miles now. GMC rules!!

#22 of 26 michael 79 possible rear bearing noise by michael79

Jul 01, 2009 (5:28 pm)

the noise started a few days ago, sounds like metal was caught on the rotor, but now after really listening to it, it is on the right rear side when i turn to the left and nothing when i turn to the right, it is getting worst, last longer, grinding sound now.
thanks for the help

#23 of 26 Re: Vibrations and Slugish [moldyg] by smokin_s15

Dec 22, 2009 (2:33 am)

Replying to: moldyg (May 31, 2007 4:38 pm)
sup dude.... i had the same problems with my jimmy but its a 2001. i had my fan replaced and my engine mounts replaced also and it stopped all the vibration in my jimmy. The fan got replaced because over time it wears out and starts to crack which throughs the fan off balance and causes it to rattle. and the other problem was the engine mounts, i found out that i had to change my engine mounts every two years on my jimmy because so it wont snap later on down the road.
 
anything else just hit me up

#24 of 26 shakes at freeway speed (60 to 70 MPH) by monzatom

Jan 02, 2012 (9:41 am)

I have a 1988 GMC Jimmy 4x4 that shakes on the freeway. It has good/newer tires that are balanced. New Pro comp ES9000 shocks and the tire shop said the stock steel wheels were ok. I am getting ready to rebuild the entire front end but it is still in decent shape for 215k miles. It has a newer motor with 63k miles and a custom built 700r4 and it did the same before the trans rebuild . Any advice??

#25 of 26 Re: shakes at freeway speed (60 to 70 MPH) [monzatom] by michael79

Jan 02, 2012 (10:03 am)

Replying to: monzatom (Jan 02, 2012 9:41 am)
could be a pitman arm, or idler, i'd also check the hub bearing, i did my idler arm about 170,000 and bought it from autozone, changed it twice sense, i have 221,000, upper ball joint also could do this and will wear the hell out of the tire. the garage put in a bearing for me and it was the upper ball joint, so make sure you check the play in the tire, or mechanic but at least watch him. i get my work done very cheap but still, don't do anything unless it needs it at these kinda of miles.

#26 of 26 Re: Vibrations and Slugish [repairdog] by lacosse

Feb 04, 2012 (11:17 am)

Replying to: repairdog (Jun 01, 2007 2:47 am)
spider injector is common problem with jimmys can you smell raw fuel from time to time an have horrible fuel milage ?

Messages Page 3 of 3

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