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99silverado vibration problem

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Comments

  • mmaskmmask Member Posts: 6
    To...kingfishgus
    My truck is 2000 with 3.42 ? don't know if locking or not. 4.3 V6 Short WB Auto/Air only
    nothing more. I now has 3400 miles on it, I started complaining the next day I bought it.
    About 20 miles on it.
    Built in the Indiana Plant 6/99
    They want you to put a lot of miles on it so that when they have to buy it back they can charge you for miles used. Don't listen to them demand they take it and "Try" to fix it.
    Get yourself about 4 to 6 work orders from the service department showing you have been in to have it fixed, these will have the dates and miles on them.
    Go back every couple of days if you have to...
    It is a pain because they will keep it for at least a day to balance the tires
    several different times, they will change out your tires and even possibly the front hubs, but you will need this kind of paperwork to pursue the Lemon Laws or the BBB Autoline.

    Sorry for the long winded spill...best of luck.
  • lawlertlawlert Member Posts: 11
    Funny that someone else noticed this annoying little clunking, bumping noise and feeling ahead and below of the steering wheel at relatively low speeds on washboardy roads etc. Took my 99 Silverado 5.3 4WD EC SB because I thought maybe a shock of something was loose. Found nothing. Did see a site somewhere relating to loose steering boxes but haven't had time to check it out. All I know is that it really annoys me when I'm out hunting or driving on gravel road where I'm bouncing a little. If you or anyone else out there finds a fix for this please let the rest of us know. Also, this vibration thing that sounds so prevalent is definitely something I want no part of. I'm not near as patient as some of y'all. Have no vibration with factory Firestone Wilderness A/T's 265/R75/16's but am having a new set of Bridgestone Dueler A/T's installed tomorrow. They are supposed to be the roundest tire out there. Hope I don't inherit this problem. There's not any chance at all that GM won't get this truck back if I get it. Not going to pay that much money for a truck that does that. Never had one and it sure isn't going to be this one.
  • bob259bob259 Member Posts: 280
    Had my truck back to the dealer a few times so far on this. No major break throughs to report though, in fact going back tomorrow for another visit. However, on the last visit the mechanic re-torqued all the front suspension bolts and calipers which diminished the noise/clunk quite a bit. But, it's still there only less noticeable. I'll keep everyone posted if we make any progress.
  • mgdvhmanmgdvhman Member Posts: 4,157
    Maybe we LIKE conference Bloat!?

    Quit freezing topics.

    - Tim
  • bezojrbezojr Member Posts: 11
    After sending my lemon law demand and getting a refusal, calling chevy and getting the run around, i have now filed a complaint with 1, the BBB 2, the Office of Consumer Affairs and 3, The attorney Generals Office....will this help? who knows, i only know my truck is falling apart from the vibration. I drove 100 miles the other night and lost one hubcap. the drivers seat lock has broke for the second time. The dashboard now vibrates almost constantly.
  • jpfltawjpfltaw Member Posts: 43
    JUST GOT BACK FROM A 3RD DEALER. CHEVY SET THIS APPOINTMENT FOR ME. ALL THEY DID WAS PARKED THE TRUCK IN A LOT, WHILE THEY HAD ME BELIEVE IT WAS ON THE RACK FOR AN ALIGNMENT, THEN TOLD ME THAT THEY COULD NOT DO ANY WORK ON IT BECAUSE CHEVY WAS AWARE OF THE VIBRATION.

    THEN I CALLED CHEVY CUSTOMER SERVICE TO FILE ANOTHER COMPLAINT, THEN WAS TRANSFERRED TO A SERVICE REP MANAGER. HE ADVISED THAT THE DEALER WAS WRONG WHEN THEY DID NOT EVEN DRIVE IT TO SEE THAT THE ALIGNMENT WAS OFF CENTER AND THE STEERING WHEEL WAS CROOKED. NOW THEY ARE CALLING DEALER NO. 2 ( THEY ARE CLOSER TO ME ), AND GET IT STRAIGHT THAT THE TRUCK HAS TO BE DRIVEN TO CONFIRM THE ALIGNMENT PROBLEM AND FIX IT.
  • meuse66meuse66 Member Posts: 5
    Will just got 99Silverado back from shop.Vibration from 3rd to overdrive is gone.Only drove 6 miles time will tell.They reprogramed PCM with update to raise TCC engagement speed.Tcc does not come on until higher speed.No more growl or rattle.This fix from Chevy I think is just a quick fix to please the customers.We bought these trucks for for fuel mileage to.Overdrive does not come in until truck hits 50 mph now was at 40 mph.Going to see how fuel milage is first.Then going to see about false advertising by Chevy.What away to get around the EPA.
  • xam1xam1 Member Posts: 7
    If the dash rattles and shakes, through it out. If the passenger seat jumps, open the door and through it out. If you hear wind noise around the rear window, kick out the window and let the wind in. If the steering vibrates, lock it down with a chain. If the drive line vibrates, have it rebalanced. If you have a frontend vibration, do away with the 4WD and get 2WD. If the backend bounces on bumps, put some weight in the bed.
  • jpfltawjpfltaw Member Posts: 43
    tried 5 (5 gal) buckets of wet sand 80 lbs each, rear end still bounces.
  • bob259bob259 Member Posts: 280
    Well just got back from the dealer and they are still trying to determine what is causing the clunk felt in the steering wheel that a few of us are experiencing. They have check everything in the suspension and drive train and found nothing loose. They had decided to replace the steering shaft to see if that helps. I'm still not convinced it's the shaft, but will let them eliminate it from the list. The rear spring noise is getting worse as well, but they say that is NORMAL??? Who knows I maybe driving a Tundra yet.
  • kingfishguskingfishgus Member Posts: 112
    Got truck back from first dealer visit. Service rep said there is a long list of items to check/repair for vibration. They did through balancing tires. Didn't help. Also complained of stearing wheel shaking badly when hitting bumps with front tires. They said they found a tie rod end loose. Seems to have helped, I think. Does generally steer better, maybe they did an alignment.
  • kingfishguskingfishgus Member Posts: 112
    In looking at the 2000 Silverado topic I picked up a good link to the National Highway Transportation site at
    http://www.nhtsa.dot.gov/cars/problems/
    check out the complaints for 99 Chev Truck Silverado and see how many of us complained there. Bunch of vibration problems.
  • cfunkcfunk Member Posts: 13
    Rear springs finally arrived at the dealership. I will be bringing it in on Monday to have the springs installed.

    This will be GM's last attempt at fixing the shudder launch and cab vibration. I opened a case with GM this week and made it very clear this will be the 4th time it has been in for service to fix these 2 vibrations and if this doesn't fix the problem I want the truck bought back.

    They have tried the following to fix the vibration problems:

    -Balanced tires on two seperate occasions

    -Replaced the rear shackles and bushings per TSB
    General Tires don't fall within the guidelines set forth by the same TSB. The truck was built Jan. '99 so it SHOULD have the B9 hubs. TSB indicates no need to check if built Jan. '99 or later.

    -Funk

    1999 Ext. Cab, 4.8, 3.42, General Tires, locking rear.
  • chevy4mechevy4me Member Posts: 203
    The new leaf springs seems to have fixed the launch shudder on my January 99 built ext.cab 3.42 locker with the Generals. I checked myself and found I had the B9 hubs.
  • kingfishguskingfishgus Member Posts: 112
    Someone asked me in an earlier post, my vibrating truck was built 8/99, it's a 2000. 4800, auto extended cab, locking rear end, 2wd, 1500.
  • cfunkcfunk Member Posts: 13
    Just another data point.

    Drove a 2000 2wd 1500 with 5300, auto, extended cab, 3.42 locking rear on Saturday and it did not have the launch shudder or the high speed vibration.

    Neither did the 4x4 Z71 that we drove.

    -Funk
  • toroktorok Member Posts: 2
    I just received my new 2000 2dr 2wheel drive sportside, It came with a vibration at 68 miles per hour, dealer found tires out of balance and one tire with a hard spot, mounted spare tire on wheel,balanced and vibration gone. I have the 5.3 engine with 3.42 locking diff. I hope this takes care of the problem.
  • cfunkcfunk Member Posts: 13
    Just thought I would update everyone:

    After the dealer replaced the springs, the launch shudder is gone, well 98% gone.

    The rear end seems to stay in line a lot better. Before is was prone to hopping out of line quite a bit when going over "decent" bumps at speed. Front end still seems to vibrate quiet a bit over same bumps.

    The in cab vibration is still there at 68-72 mph. I am not being picky about this as we drive at that speed for 40 minutes each day, one way on our commute. I am going to push for new tires/rims from the dealerhip as a test to fix. So far they have been reluctant since they would have to purchase said tires/rims from GM.

    -Funk
  • 99chevy99chevy Member Posts: 1
    A friend of mine has a 99 Silverado and had the vibration problem, well GM tried everything to correct it. He finally went to arbitration and come to find out 1 out of every 5 made there is a defect in the rack and opinion system and ended up getting a 2000 model...just thought I would let the vibrator's know...I know I've had some problem's with mine....ie.. lower engine knock, wont shift out of 3rd, and erratic idle..I'm satisfied with it but those liitle thing's really irritate me. Performance is good but the 2000 is awesome....
  • jed1894jed1894 Member Posts: 337
    I got 2000 model....it had vibration too. New tires/driveline angle adjustment/and about 3-4 other things finally stopped 60% of the vibration. Still haven't fixed the towing vibration or launch shutter. But, I can live it now.....oh well.
  • ferris47ferris47 Member Posts: 131
    There is no problem with the trucks. Chevy just outsourced their design and production to Microsoft. The Trucks work just like windows. They sell them will all kinds of problems and then give you service packs down the road. Sorry just a bit of humor. I have been following these problems as I had a Silverado on order. It came in wrong, I continued to see problems and visited quite a few service centers at dealerships and found out just how widespread the problem really is. I jumped ship and bought a Tundra that I am completely satisfied with. Very nice truck, flame away, I really wish all of you the best of luck though, I was very dissapointed to not get a Silverado, but being the kind of person I am, were I to have spent 30K on a truck and have it in the shop more than it was on the road, somebodys blood would have eventually been on my hands. I still follow this problem and If I should happen upon an answer I will post it immeediatly.
  • cfunkcfunk Member Posts: 13
    New rear springs will solve the launch shudder. The added benfit is the bed doesn't squat as much under load and the rear end stays in line better when going over bumps at speed.

    My dealer replaced the springs with this part number:

    15746407

    Good luck and get it fixed!

    -Funk
  • quadrunner500quadrunner500 Member Posts: 2,721
    You tried everything but to own the new Silverado. Not to flame you, but my truck was born without those problems. And 15,400 miles later, I haven't even balanced the tires. Love my 1500 LS 4x4 Reg Cab, 5.3L, Z71, 4.10 locker, long bed.
  • lidar99lidar99 Member Posts: 2
    I recently had my '99 2wd in the shop for the launch shutter problem. They replaced the rear springs and it seems to have fixed it. It also seems more stable than before.
  • lincoln5lincoln5 Member Posts: 40
    You are right about the process of elimination. In my case the vibration was mostly from a bad set of tires. Replacing the springs took care of the rest. Based on the build date only the shackles needed to be replaced but when they got the truck on the rack, they discovered that the shackles were okay but the springs needed to be replaced.

    The new springs also seem to have made the ride a little bit softer. At least my wife says she can feel a difference.
  • jpfltawjpfltaw Member Posts: 43
    HAD THE NEW SPRINGS / TIRES / SHACKLES, VIBRATION IS LESS BUT STILL CAN BE FELT AT HWY SPEEDS.

    NOW THE HOOD AND REAR SEAT RATTLES WHEN HITTING ANY BUMPS.....AFTER ALL THE HASSLES WITH THE SERVICE DEPARTMENTS ( 3 DEALERS )....WILL GIVE SERIOUS CONSIDERATION TO CURING THIS VIBRATION PROBLEM ONCE AND FOR ALL.....

    GOT A CALL FROM A FORD DEALER YESTERDAY ON A F250
    THAT DOES NOT VIBRATE.

    VERY TEMPTING.

    SEWELL CHEVROLET, NEW ORLEANS S U C K S !!!!
  • bezojrbezojr Member Posts: 11
    As of Thursday, Chevy has agreed to buy my truck back and after talking to Steve Craw I am seriously considering a 2000 x-cab 4x4 with the 5.3 and 3.73 he tells me there is almost zero problems with this build..he mentioned one thing and said it is a 20 minute fix...I'll have to find out how Chevy is going to treat me in the re purchase price.
  • n4lqn4lq Member Posts: 6
    I've driven 3 2000 Silverados now and they all shake to a certain extent. I fell in love with a Pewter, 2wdr, 5.3engine, 3.73, hd supension, locking rear end. Drove it at 60-70mph and it about shook the wheel out of my hand. The dealer started the tire balance song and dance. I told him I didn't want to suffer through the ordeal. Then I drove a GMC Sierra outfitted nearly the same but without the locking differental. Not nearly as bad and just slightly noticeable shakes on some surfaces. The passangers couldn't feel it but I could. Maybe I'm spooked now but when I drive a big Dodge Ram, I don't feel any vibration. Rams are like driving Sherman tanks in comparison though. Next, I'm going to try a Chevy without the HD supension and see if that helps.
    I really want a Chevy bad but refuse to have one that shakes.

    Are the 4x4's really better about this? If so, maybe I need to try one. Could it be that a 4x4's ride is rough enough to mask the vibration?

    One Dodge salesman told me the problem with Chevy's was due to shipping. Seems they pull them down too tight to the trailers and bend their suspension causing the vibration. If that's all it is, I'll go the factory and buy one from a local dealer.
  • g8trg8tr Member Posts: 77
    I've been going around and around w/my local dealer about the vibration. Mine is strictly the rear end. Had the shackles and bushings replaced last week per TSB but not much of a difference. Shop foreman is willing to replace parts with a truck that rides good (beginning to wonder if they exist) to find out what the problem is. I have a SL reg cab, 4.8, 3.42, smooth suspension. What else could it be? Leaf springs? A rotor out of balance? Please let me know--running out of options. I've done the tire swap and on my 3rd set of sorry Generals!

    Cheyy4me, did you ever find out about your rotor and is it normal?
  • chevy4mechevy4me Member Posts: 203
    I never found out anything more on the rotor. I did get the leaf springs replaced (part # 15746407)same as on others I've read about here. It seems fixed but I am still detecting a slight vibration nothing like before. I don't know maybe I'm just hypersensitive to it now. Did you check to see if your hubs are the b9's?
  • g8trg8tr Member Posts: 77
    I didn't think hubs are on the rear-end. Maybe I'm ignorant of how the rear is assembled. Enlighten me! I guess leaf springs could be a problem and I'll have the dealer add that to the list of things to check out. I like the truck and I hope this is settled soon. If not, I'll have to do like some others and see if GM will buy back the truck. I have been dealing w/this on and off since July 1.
  • marcmarc Member Posts: 21
    I had new rear rotors put on my 99, well the part where the pads rub had a funny glaze look to them with stains. Like clear coat on top of the stains. Also, the part where the disc connects to the part that has the lugs on it, ( how's that for proper terminology) has a bunch of rust. They insist these are new rotors but I think they are used. Is there a way I can call GMC and ask if they show new rear rotors being put on my truck.

    I still have a clank when I put the truck in R, sounds like bad u-joints.
  • kingfishguskingfishgus Member Posts: 112
    New tires took the low speed 35-45 mph shake out. Still have high speed shake. The more I talk to other owners the more I think that most of the extended cab 2wd trucks shake. Chevy really shafted us on this one. I'm not going to keep it if it can't be fixed. Of those of you who had Chevy buy it back, what kind of settlement did they give? So much per mile deduction?
  • gl3gl3 Member Posts: 31
    Still fighting with Chevy to buyback my Xcab
    Z71 but my salesman says if they do, they will
    reinburse me for the amount paid minus .25 a mile.
    and for any add-ons left on the truck if I produce
    receipts. Have heard that they will not do this too so don't take my word. Will be speaking with
    Chevy again tomorrow, will try to find out then.
    I think they stall everyone so the miles go up and
    they spend less money or people just sell/trade them off as if they buy it back, it has to be
    noted that it was if they resell it. To get the
    ball rolling you have to call Chevy Cust service
    and get a file started, they will give you a file
    number to refer to everytime you talk with them.
    Hope this helps and good luck.
  • ovalleyovalley Member Posts: 135
    I had GM buy back a 99 reg cab 2wd because the dealer wasn't able to fix the vibration. My dealer started the process for me without any persuation from me. I had about 6800 miles on it when it was turned in with no charges for mileage. I was told that if I could produce receipts for add on they would reimburse me. I only had a drop in bedliner which I kept for me new 2000 GMC ext cab. I'm not sure why they did not charge me for mileage, but I did loose on the value of my original trade-in. It seems to me that Chevy had an individual deal for each situation from the people I have talked to. Bottom line, I think they structure the deal so it comes out best for them. GM even reimbursed me for the payments I had made to date, including interest. I even had an option to upgrade through GM, but the upgrade was MSRP to MSRP, non-negotiable. All and all I guess I can't complain too much. Good luck to those going through this. It took me almost 2 months from start to finish.
  • bob259bob259 Member Posts: 280
    If you are experiencing the steering wheel clunk like I did here is an update. GM replaced my steering shaft yesterday and it fixed all the problems and noises I had in the front and steering of my truck. The GM part number is 26083324 - F shaft. Hope this helps if you are experiencing the same problem. Also when they balanced my tires it got rid of the vibration I had.
  • tigermeattigermeat Member Posts: 1
    Hey bob259, was your steering noise problems on a 4X4?? I am having a similiar problem on my 99 Z71, the steering column rattles when going over small bumps and driving straight. It seems worse when cold.
  • strasgstrasg Member Posts: 6
    I have the same steering clunk rattle noise on a 99, 3/4 ton silverado 4x4 extend a cab. The noise only started after 10 000 miles. Looks to me like those universals in the steering column are to loose. Anybody find a fix for this?
  • bob259bob259 Member Posts: 280
    I have a 99 Z71 1500 and the problem will be the same on both of yours. Have the dealer replace the F shaft with the Part Number I listed above and it will be like new. I hear there was a bad batch and we were the luck ones to get them.

    I tested it over all the roads I normally got the noise and clunk on and the new shaft fixed it. It's like a new truck again....
  • lawlertlawlert Member Posts: 11
    Thank you very much for the steering shaft revelation. I agree with you tigermeat that it appears to be worse when cold but still hangs around when it's warmed up. Got an appointment tomorrow to have it looked at. Told the service mgr. what the apparent solve was. He basically informed me that they would have to go through all of the GM authorized procedures rather than assuming any of the rest of us know anything. I informed him that if he anticipated that was going to repeat the steps of all of you that have gone before me trying to solve this that he was barking up the wrong tree. I'm not up to an appointment every week for the next few months. Anyway he didn't express any interest in going with me right to the root cause. I know with 100% certainty that my problem is mimicing the descriptions that y'all have given so I assume it will ultimately turn out to be the shaft literally and figuratively. I am going to take as much stuff off these web sites as possible to support my contentions. Anyway thanks again. I just want this annoyance to go away. When you're driving you just keep thinking this can't possbibly be a new truck.
  • obyoneobyone Member Posts: 7,841
    If you are running into a roadblock with the Service Manager, and are tired of wasting time (both yours and his), you may want to take it up with his boss which would probably be the dealership's General Manager. You may be surprised at the results. After owning my second Silverado in three months, if I'm not satisfied with the Service Manager's response, I'll ask him one final time if it is his "final answer". If he replies "yes" I contact the General Manager and set up a meeting. After a few meetings, I assure you that the Service Manager will no longer stonewall you. Worked for me. Good luck.
  • lawlertlawlert Member Posts: 11
    I own a 1999 Silverado LS 4X4, Ext Cab, Z71.
    There are many things that I really like about this
    truck but, I have experienced a number of problems
    with it. Vibrations, Steering Wheel Clunk, Sticky
    Throttle Cable, Leaky Cab, Wind Noise, Bad Tires,
    etc...I have perused all of the postings in the
    topic list that relate to this particular vehicle
    and there are a number of extremely common threads
    that are very widespread. I think we all know what
    they are by now. The Vibration one is a really
    serious one that GM has started buying back trucks
    that simply cannot be fixed to the owners
    satisfaction. Has anyone entertained the idea of a
    class-action suit? It appears that it would be
    well warranted. The issue that concerns me is
    resale or trade-in values. As all of these issues
    leak to the forefront who do you think y'all are
    going to get someone to pay fair market value for
    what is likely to become a lemon model year??? I
    think that as exposure widens it is likely that the
    public may regard this entire '99' year of GMC
    trucks as something to shy away from. Who do you
    think is going to personally take the hit for
    several thousand dollars when that happens???
    Looks to me if these problems are as serious as
    they appear to be we should all stick together
    rather that fight our own personal wars with our
    individual service departments and GM. Don't get
    me wrong, I think this truck is a winner in most
    respects but these issues are no laughing matter.
    Do you really think this isn't going to make a
    difference? Somewhere along the line it looks like
    we are all in for a beating. Any class-action
    takers?


    I own a 1999 Silverado LS 4X4, Ext Cab, Z71.
    There are many things that I really like about this
    truck but, I have experienced a number of problems
    with it. Vibrations, Steering Wheel Clunk, Sticky
    Throttle Cable, Leaky Cab, Wind Noise, Bad Tires,
    etc...I have perused all of the postings in the
    topic list that relate to this particular vehicle
    and there are a number of extremely common threads
    that are very widespread. I think we all know what
    they are by now. The Vibration one is a really
    serious one that GM has started buying back trucks
    that simply cannot be fixed to the owners
    satisfaction. Has anyone entertained the idea of a
    class-action suit? It appears that it would be
    well warranted. The issue that concerns me is
    resale or trade-in values. As all of these issues
    leak to the forefront who do you think y'all are
    going to get someone to pay fair market value for
    what is likely to become a lemon model year??? I
    think that as exposure widens it is likely that the
    public may regard this entire '99' year of GMC
    trucks as something to shy away from. Who do you
    think is going to personally take the hit for
    several thousand dollars when that happens???
    Looks to me if these problems are as serious as
    they appear to be we should all stick together
    rather that fight our own personal wars with our
    individual service departments and GM. Don't get
    me wrong, I think this truck is a winner in most
    respects but these issues are no laughing matter.
    Do you really think this isn't going to make a
    difference? Somewhere along the line it looks like
    we are all in for a beating. Any class-action
    takers?
  • bezojrbezojr Member Posts: 11
    I was checking out this topic today to see if there was any interest in class action. Chevy is putting together the numbers to repurchase my truck, the ASM told me I could buy another chevy and i would get a "net-net" price...he lied..they want to charge me the difference between the two stickers(my original truck against any new truck)I feel like i've been lied to, harrased and put off for 6 months..now as a final slap they try to get me to pay more for the new truck than i could get with GMbuypower. go figure?
  • bob259bob259 Member Posts: 280
    While I'm not totally disgusted (yet) I would be interested in it. The interesting thing I found out last week was if I traded my 99 for a 2000 they wanted over 5K for a 1 year swap. (So much fr the best resale value. oops I didn't read the fine print on that statement.....
  • drendondrendon Member Posts: 1
    Well, Everybody I just finished reading a 111 pages of complaints. We all have the same problem. I have also gone through the BS of all the attempts of trying to fix the problem . But now I am going to try and see if the dealership will help with buy back option. I will keep anybody interested updated.
  • mike38mike38 Member Posts: 15
    My 99 Z/71 5.3 locking 3:73 reg. cab. I changed over to my winter tire setup - steel GM wheels and new Goodyear AT/S 8 ply tire. The truck is rock steady. The other tires I run in the summer are the rt/s goodyear and alloy rims. The AT/S is a really nice tire - I think the extra wieght and steel belts helped.
  • shebasheba Member Posts: 3
    Chev bought back my 1999 Silverado for full purchase price, NYS tax included. The dealership is not allowed to deduct mileage. Contact the BBB in Va. They were very helpful. If the issue cannot be resolved arbitration may be necessary. I rode around town for two months with vinyl lemons that I cut out of yellow placemats on my truck for several months. The exposure helped me and most certainly made someone question whether to buy a Silverado or not. The end result was the tires. The tires need to be absolutely perfect, which as we know is next to impossible. Over 16 tires were tried on the truck to find an exact set. What happens when you have to purchase tires? Don't think your local tire dealer is going to go through all of that. It is what the pressure will bear. Just picked up my 2000 2500 Ram Diesel. Hope this works out. Hope this all works out for those of you wanting to pursue a buyback.sheba
  • butch23butch23 Member Posts: 6
    I purchased a '99 Silverado in January and have been to the dealer 6 time for the "shakes". They have replaced the rack & pinion, balanced the drive shaft, installed new rear leaf springs, shackles and bushings, replaced the brake rotors, and installed five new tires...even the spare.
    Today I visited my dealer and he is initiating the buy back. He didn't provide many details but did say there was a deduction for mileage, but a reimbursement for any add on's. He is to call me tomorrow with further information. It is a shame that GM can't find a fix for this problem. It is a really fine truck otherwise. Just miserable to drive.
  • g8trg8tr Member Posts: 77
    butch23
    At least your dealer is initiating the buy back. I have also gone through five tires, leaf springs, shackles and bushings. Still shaking. I'm suppose to have another tire installed next week and I feel pretty confident that it won't be fixed. I will start the paper work for the Lemon Law (in Fla.). I agree, the truck is pretty sound but the annoying vibration is too much to deal with.
  • ve7zrve7zr Member Posts: 2
    Having read the posts about the different Chev/GMC problems here's what I have. The truck is:
    1999 GMC Sierra SLT Ext Cab SB
    5.3 L Engine
    Auto Trans
    3.73 Locker
    Z85 Firm Ride
    Built 1/99

    YES - It has the Launch Shudder in 1st and 2nd gear. Dealership replaced rear springs, bushings and shackles as per GM TSB. New springs solved the Launch Shudder when the truck is empty but not with a 650 lb. load. Launch Shudder was actually worse with the new springs and a small load.

    Dealership sent the truck to a Spring Shop and had an extra leaf added. Again NO Launch Shudder when the truck is empty but the shudder still occurs with a load, but only for about the half the distance.

    Although the new springs have decreased the Launch Shudder they have created two other vibrations that were not there with the original spring set. Now have an almost constant vibration/shuddering between 30 and 40 mph., very slight but its there. Also an inconsistent but very noticeable vibration/shudder between 50 and 60 mph. Feels like you're driving over 1" deep groves cut into the highway. The lower speed vibration occurs most of the time. The higher speed vibration only occurs occasionally and will stop when the throttle is backed off.

    I bought this truck to tow a 22'- 4500 lb. 5th wheel. From what I've experienced so far, I hesitate to invest the money to install the hitch. This truck looks great, but for $38K (Canada) I doubt that it will tow a small tent trailer.

    It looks like GM has dumped these trucks on the market without proper testing and is letting the Dealerships give the buyer the run around.
This discussion has been closed.