Did you recently rush to buy a new vehicle before tariff-related price hikes? A reporter is looking to speak with shoppers who felt pressure to act quickly due to expected cost increases; please reach out to PR@Edmunds.com for more details by 4/24.
2000 Chevy Silverado Vibration - II
This discussion has been closed.
Comments
Test drive with service shop foreman scheduled for today. New vibrations have surfaced. I believe when they changed my rear leafs, changed pinion angle as truck rear sits about 1 1/2" higher than before. Vibes start to be noticeable at 35 - 65. Just a steady vibration all the way through. It's kinda like getting a free massage...don't think the truck likes it though.
On the deleted post, I had used the "a" word after "pain in" describing the job of changing the carrier bearing/universals. Your deletion must have been complimentary. LOL
From what I have seen they are NOT consistent with how they govern themselves and this forum. But they would get along well with the mayor of NY City, he rules by his "judgement" also, end result for him is he will loose the election for state senator because of it and President Clintons wife Hillary will win. Now back to topic.....
Hope you get this problem resolved soon it sounds like you have been dealing with it for toooooo long.
Ray T.
He claimed basically that if corporate engineers don't acknowledge any problem, then it isn't their place to. WHAT A CROCK! I focused mostly on the launch shutter, high speed wobbles, and idle shake. He claimed that they all do that. Of course I told him " That don't make it right! " My questions were leaning towards that of the procedures the tech goes through. Wondering why they aren't looking into other possibilities such as just a vacuum gauge to see if there is anything in there maybe causing a rough idle, or if they have put a string line to the drive shaft. He told me the tech does not get paid to perform these kind of procedures. There's a SNAFU. Well now it seems I will have to take my service to another (further) dealership. I tried to maintain, but I guess it got a little heated before I finally walked out. Oh well, I get a feeling any other service dept. would be a much greater help.
2 Pc. Drive Shaft... I looked down my drive line, I can't believe that it is supposed to be that crooked. I know being a 2 Pc. it ,CAN absorb a change in angles, but will it perform smoothly. I put a string line down it, side to side about 1 1/2" here and there. My '71 Chevy Pickup with a 2 Pc. is a straight line. Imagine that. And what's with the "Made in Mexico" printed on my rear leafs? HA HA that's not funny...
Anyone else notice if their 2 pc. shaft doesn't sit straight or have a reason why they don't.
But one fact of life for u-joints....unless both halves of the joint rotate on the same axis, the velocity of the output half superimposes a sine wave to the velocity of the input half. The greater the angle, the more discontinuous the velocity of the output half. That sort of vibration is inherent.
The vertical axis I can understand changing while under load or acceleration. But my '99's lateral axis changes at every point. The shaft out of the tranny heads right (appx. 3/4"), until the carrier bearing, then off to the left (appx. 1"), reaching the rear end. Then, add a vertical change while under load....
I plan on having my truck hoisted, so I can get the entire drive line strung, and get some pics.
I am wondering if there are any straight dual shaft set ups out there. Mine is visually obvious. I do have a serious launch shutter.
2nd question: If the 2 pc drive shaft is suppose to angled, what is the angle suppose to be? Can it be measured with handy-man tool?
My drive shaft is angled (upwards) probably 20-25 degrees at the connection point. Do you think that's normal? The dealer adjusted with shimms.
I also have launch shutter.
Thanks John
I have a 2000 Silverado 1500 extended cab 4WD (4dr) Z71 pickup. I replaced the factory shocks (46mm Tenneco Shocks that come with the Z71 package) with a set of Edelbrock IAS shocks. I think that these shocks should be included with the Z71 package. Much softer ride yet great handling. Well worth the money.
I have the P265 WOL Firestone tires that I keep at 40 psi. It has the 3.73 locking rear axle.
My question is does anyone with a 4WD extended cab have these problems??????
rcoos
p.s. Meredith, will you allow this post or are you going to do your little totalitarian censorship again???
jed1894
How did the drive shaft sit prior to dealer shimming it or...what was the net result in relation to the 20- 25 degrees that you have now? How did he determining how much to shim it?
Does your 2 pc. shaft appear straight and not shift from SIDE to SIDE at all?
Mine while stationary is obviously crooked from side to side, as well as the vertical angle...
I don't know how it looked prior to them shimming it, however, it now has two shimms on each side where it bolts to frame and the connection point. The service manager did the work himself based on tech. assistance advice. So if I had to guess, by looking at the two shimms, I'd say the difference was about 1/4 inch difference in the angle.
Krc32:
I think I understand you now. I thought you were saying that the vertical angle was wrong....I understand now. I haven't checked the "side to side" angle yet, but I will when changing oil next time. Check with a string, right?
Anyway, now that I'm on the right page, anyone know what the proper vertical angle should be?
John
The 5.3 is the old 327 resurrected from the dead & I have it in my 2000 Silverado 3/4 ton ext. cab. short box & love it.
As for vibrations in the older model trucks I don't believe there were any, the new frame style/wheels/driveshaft angle seems to be the culprits from what I have understood from this forum, I do not have any problems to date w/my truck & hope I never do.
Ray T.
Ray T.
my 2000 silerado x-cab 1500 has not one
of those problems. I have 8800 miles on
it, I have had it six mos. I talked to a
guy today with a 1999 that has had all those
problems windows/vibrations. He had his
tires rebalanced, same problem, the dealer
told him he had some kind of design flaw in
front suspension (to make it ride better).
He gave me this adress. Good luck everybody
happy22
When I go in I usually put together quite a few items for them to do. USUALLY the same as the last time!! I make sure they have a truck reserved before I drop off my truck. First time the rental co. paid the upgrade(Dodge X-Cab), when I questioned why I was supposed to, instead of the dealer. The 2nd time I told my advisor I didn't want the same trouble again getting a truck, so he covered it (Chevy Long Bed ). The 3rd time my NEW advisor, said (usually base car only )so he had to clear it through a rep first, approved in 24 hours, before drop off. Now in a Ford X-Cab~ The Chevy beats them all hands down in style and comfort. The ride quality...well...I am still waiting.
Dealers WILL pay the upgrade..
Has the machined aluminum wheels with 235 Goodyear ST tires. My only complaint is that this truck comes with the worst engineered set of floor mats every made. I will continue to report as the mileage rolls up. So far all the hype about vibration is like Chichen Little saying, "The Sky is falling".
advmason
Surfing is what it's all about with learning computers, I'm not one for reading the manuals on computers as for my trucks , that's a different story.
Ray T. :-)
When you trade a perfectly good truck for a 26K vibrating truck, it's not a small deal.
Happy trails....
I really did not think that my tire suggestion would solve some of the obviously serious vibration problems, but it was worth a try.
Good luck.
Is anyone surpised at that fact? I think not.
I have to confess that I was amazed that the tires fixed my vibration problem because I had never had a vehicle even come close to shaking as much as the 2000 Silverado. Another part of the fix is the installer, who is a genius with tires and wheels. Incidentally, he balances the wheels and tires off the truck which, as I am sure you know, is not always the preferred method.
Of course, the dealer should always give you a copy of the service record. I have purchased 17 cars and trucks from the Chevrolet dealer near my home, and I have, on a few occasions, had to ask for a copy of their service record. Having asked, it was immediately forthcoming.If it had not been,I would have had to assume that they had a problem with record retrivial or that they did not do the work. I am not suggesting that your dealer did not perform the work, but I know the owner of the local dealership, and he tells me that they are under more and more pressure from GM to control warranty work (and, hence, costs). If you are working toward a possible buy-back, then the service records obviously become even more important.
It is absurd that we have to try to help GM solve some very wide spread problems, but I am convenienced that the whistling problem I had with this truck would not have been solved so easily had it not been for a web site such as this.
More later.
I just put a set of Edelbrock IAS shocks on my truck and it did help. They really do give you firmness while cruizing down the road and still soak up bumps like the stock "solid smooth ride" shocks. It seems like the faster you are driving the firmer they feel. Noticed a big difference when moving slowly, like over a speed bump. It has been 6-7 months since I drove a truck with the firm ride factory shocks, but from what I can remember the factory firm ride seemed stiffer. Maybe it's the Edelbrock valving working as promised. Climbing in the bed of the truck it seems much more solid now.
Professor2
Did you mean to say balances wheels and tires "on" the truck? One interesting thing on the tire balancing. I had the tires balanced a total of four times and only one tire/rim combo out of four balanced to "0" on the initial attempt at all four dealers. Each balancing machine showed that the previous balance was off anywhere from .25 to .5 oz. These balances were done within a week to ten days of each other. What concerns me is that one of the tires has 1.75 oz weight on the inside. Fine for Mack or Kenworth not so good for the Silverado.
The tech also told me that he just got his '00 2500 LS and was glad he got a 2500. Had to wait 9 months for it but shares none of the 1500's problems.
BTW w/1500# payload (firewood) the truck was sitting level and I actually got to put the Tow/Haul mode to work. Makes a big difference in shift points, they are stretched out longer and it shifts quicker when it does. Probably similar to what a Hpertech 3 would do if I installed one but I believe the tow/haul feature does just what the Hypertech unit does w/changing of shift points.
Ray T.
BACKGROUND:
My truck is an Indiana built 5/99, Z/71, 5.3, reg cab, 3.73 posi, short-box(step-side)P265 - alloy rims.
The vibration since about 500 miles was in the typical 60-65 mph range. The dealer did acknowledge it is a common problem but no suggested GM fix had yet proved effective according to the dealer. Therefore I simply had it documented on the workorder and did not want them experimenting on my 40K truck. ( I am glad I took this root,I see its still the case 8 months later). As experienced owners can attest too, every time a dealer works on a fix they inevitably create another problem.
The truck came with Firestone Wilderness AT's, P265/75R-16's. I simply didn't like the look or ride so I bought a new set of Goodyear RT/S at about 700 miles, same size and had them balanced at a local tire shop. The vibration in the truck remained the same as was the case with the Firestones, at about 60 to 65 the steering wheel rapidly shook back and forth about a 1'4 inch, it was some times triggered by a bump, sometimes it just started on its own as the mph increased.
What have we learned so far...the change in tires did not seem to change the vibration condition. The story continues...to save my precious alloy rims from our Canadian winters I bought a set of steel GM rims and another fresh set of Goodyear tires. This time, AT/S LT265- 75R-16's. Guess what, the vibration was gone ! Well lets be really exact and say that it was 98% corrected ! Really.
My conclusion, and feel free to comment, is one of several things may be happening here. First, I may have an alloy rim(s) that are not straight (remember both the new Firestones and the new Goodyears tires vibrated - despite 2 different sets of tires and two different balancing methods, ie: factory and aftermarket highend shop). Could it be two sets of bad tires from 2 different tire manufactures - highly unlikely.
I believe the answer lies in the added recipocating weight and mass of the LT, read LIGHT TRUCK 8 ply tire and the heavier steel rims which have effectively nullified the vibration that was occuring. Ill keep ya posted. Although I must tell you the vibration issue is pale in comparison to the newly aquired clacking/knocking sound I am getting at the DR. side rear area of the 5.3. It happens when its hot only and is most noticable at 900 to about 1500 rpm, under load or free reving. ( I use mobil1). It used to have the cold start knock (lifter bleed down?), thats gone and replaced by the 900rpm clack, I think it may be valvetrain, I hope she goes away as I continue to put miles on her, 10K to date.