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Chevy Silverado Problems



  • txyank1txyank1 Posts: 1,010
    and noticed it took a long time to hit OD. Dealer couldn't tell me why, but that's kinda what I figured after I realized it always did it.
  • Would like to Thank those who repsonded to my transmission questions. Overall for my first month of service I really can't complain about the truck. It rides smooth and the 4.8 has plenty of power for a guy coming out of a 4 banger.
  • The bulletin on wind noise and the additoinal list, it is most helpful....Service guy here said that the main body man was out sick or something and that I would be better off to try back next week. While I still belive there is noise comming from that rear window, I believe the nuisance noise I am hearing may be comming from the driver's side door moulding, going to check it out and try a few things to see.
    Still wondering if that Fuel injection cleaning was worth the $90? But I guess that's sunk now anyhow.

    Thanks again,
  • abc246abc246 Posts: 305
    My 4.3 V-6 is making a lot of noise at idle again in my 99 Blazer. I posted in the Blazer and S10 section but did get any help and I think this is a common problem. When it was under warranty the dealer replaced a tensioner or pulley last time it was making noise. I can't tell from the paper work what was replaced last time. I should the swap parts off my 2k Silverado!! My question is, what goes bad, the idler pulley, the tensioner pulley or the tensioner?
  • I am new to the forum, so 1st I'd lke to say hello and 2nd ask a question about my 1996 350 vortec engine. I have always heard of the knocking problem but my truck didn't have enough of a knocking sound to bother me, UNTIL recently it just hit 60,000 miles and oil pressure has not changed but when cold the knock is getting more pronouced and the knock sound speeds up with engine rpm as you are taking off and stops shortly after warming up. It sounds more like piston slap to me and the sound is worse when it is cold outside. I live in the south so it ain't to cold and I have always used 10w30 oil changed at 3,000 miles. Is this a serious problem or will it last a long time. Like I said since about 55,000 miles it has started to get louder and last longer than the use to be 3 to 4 seconds now seems to be like a minute or so.
  • prd1prd1 Posts: 4
    i bought a 2000 silverado new after selling my 92 corolla big mistake. its now got 18000 miles on it and am starting to see some things like rattles engine knock 4.8. tranny slip elec problems driver side window not working sometimes. power steering whine that is driving me nuts.
  • ryanbabryanbab Posts: 7,240
    have you taken it in to the dealership for any of the above problems?
  • prd1prd1 Posts: 4
    no not yet but i need an oil change in the next 1000 miles and will address them when i go. i understand that new vehicles have some bugs but there seems to be alot of them on these trucks i did have a few problems on my toy but not untill after about 98000 miles.
  • prd1prd1 Posts: 4
    after reading all the stuff in these letters its funny that i dont seem to have the same problems as most other owners are having such as wind noise and vibration problems. hope i dont later.
  • txyank1txyank1 Posts: 1,010
    on my '99, but all I have with 'he '01 is the notorious expansion joint "Bounce". 1 yr+ and 15,000 miles.
  • To reduce that bounce, you might try to get some feed or dog food sacks, put about 75 pounds of sand in them and put them in the back of the bed. They are easy to move out if you need the space for a load. Even if you leave them behind, you have lost nothing. I carry about 300 pounds and it significantly reduces the bounce. I went to Calif. at about 7000 GVW and came back with 7500 GVW - not all due to sand - and it was not a bad ride at all.. I have a Line-X bedliner and those feedsacks have never moved - maybe I haven't hit the brakes hard enough yet. I keep detailed records and I can't see any difference at all on gas mileage.
  • rayt2rayt2 Posts: 1,208
    RE Post 1820
    TSB #00-07-30-006 for Stall/Surge at Stop or When Shifting to Drive or Reverse (Install Updated Calibration)
    The geocities site does not seem to work anymore for some reason.

    Ray T.
  • ryanbabryanbab Posts: 7,240
    that crackeregg site no longer works. Many people think GM had something to do with it. They stepped in and shut it down

  • obyoneobyone Posts: 8,054
    cause it gives dealers the fits when you give them the TSB. First question asked is where did you get this.....course some dummy probably told the truth.

    A/T - Stalls and/or Surges at Stop

    File In Section: 07 Transmission/Transaxle

    Bulletin No.: 00-07-30-006

    Date: May, 2000


    Stalls/Surges at Stop or When Shifted to Drive or Reverse (Install Updated Calibration)

    1998-2000 Chevrolet and GMC C/K Models and G Van with Hydra-Matic 4L80-E Transmission (RPO MT1)

    This bulletin is being revised to include additional model years and new Correction information. Please discard Corporate Bulletin Number 87-71-63 (Section 7 - Transmission/Transaxle).


    Some owners may comment on an engine stall or a slight surge at a stop or when the transmission is shifted into drive or reverse.


    The transmission calibration may not be optimal for the best engine/transmission performance.


    Install the latest new calibration.

    Parts Information

    The calibrations listed are electronic calibrations and are NOT available from GMSPO. Calibrations will be available from Techline starting January 2000, on the TIS 2000 Disk 2 CD ROM.

    Warranty Information

    For vehicles repaired under warranty, use:

    LaborOperation Description Labor Time
    J6355 On-Car Reprogramming. Use published
    Transmission labor operation time
  • ryanbabryanbab Posts: 7,240
    obyone you should start your own site

    I have scanned the nickel plated slip yoke tsb and the one for new 4 door latchs (ext cab doors hard closing when cold)
  • mwillemwille Posts: 15
    my 00 2500 Extended cab 4X4 6L loaded 8' box now has 44k needs a third set of rear tires.chevy checked everything frame,etc.says every thing is ok.I have lost control several times with the rear end fishtailing.(had some damage to the truck). Also has the engine knock. Has been to the dealer alot of times. BBB who't help(milage to high)GM hot line is a joke(talked to them aleast 20 times).HELP PLEASE anyone know GM'S "CEO" home telephone number.Thanks
  • Can you post the TSB's for the slip yoke and the doors?

  • ryanbabryanbab Posts: 7,240
    I gotta rescan them then i can email them to you

    Send me an email to remind me ok
  • Is the TSB on the nickel plated slip yoke the current TSB telling dealers not to install it?

    Last I heard was that GM is advising not to install it and that they were working on a third fix.

    The nickel plated yoke works for about 3000 miles and then the noise comes back. Similar to greasing the splines.

    Here is the original TSB

    Info - Discontinue Flushing and Replacing Transfer Case Fluid Due to Bump/Clunk Concern #99-04-21-004A
    Discontinue Flushing and Replacing Transfer Case Fluid Due to Bump/Clunk Concern
    1998-2000 Chevrolet and GMC K1-2 Pickup and Full-Size Utility Models

    1999-2000 Cadillac Escalade

    with NP246 Automatic Transfer Case (RPO NP8)

    This bulletin is being issued to cancel Corporate Bulletin Number 99-04-21-004. Please discard Corporate Bulletin Number 99-04-21-004 (Section 04 - Driveline/Axle).

    This bulletin is being issued to advise dealerships to no longer flush and replace the transfer case fluid when a customer comments about a "bump" feeling when the vehicle accelerates from a stop.

    When Corporate Bulletin Number 99-04-21-004 was issued, a new transfer case fluid had just been developed to correct this condition. Currently, a nickel-plated slip yoke is being developed that will correct this condition. A new bulletin will be issued as soon as parts are available.

    Please share the information in this bulletin with customers who may inquire about this condition.

    © Copyright General Motors Corporation. All Rights Reserved.
  • mannwimannwi Posts: 29
    Hi all and Ryan,

    I originally posted #1738 on these problems and went to the dealer in January. The hydraulic lifters and the limited slip are "live with it" sort of things. The limited slip is a design thing. The hyraulic lifters have been a complaint with other customers, but the dealership has not been able to fix, even after taking one engine apart. So, if the lifter does not make the noise all the with it.

    The muffler is a different story. They believed me about the "oil can" problem and ordered a new one, indicating that others had the problem too. The "oil can" noise is what you hear once when the muffler is heating up, and again once when it is cooling down. It probably helped that I told them what I thought was wrong inside the muffler, based on having worked for a muffler co. for many years. Well the new one has "loose insides." Parts inside the muffler rattle a lot when cold. You can hear the parts rattle when you tap the tail pipe or muffler with your fist. We are waiting for another replacement muffler.

  • My 1998 Chevrolet extended cab Z-71 transmission just went out at 86,000. This truck was never mistreated and all maintenace was done as recommended in the manual. I knew it would be a shot in the dark to try for any assistance from the Chevrolet Corporation but it never hurts to ask. They did admit that a transmission should not go out after 86,000 miles but they would not give me any assistance because of mileage (I didn't really expect it). All of my budies said that my transmission would go out at 75 or 80K as theirs did, so I am guessing this is a widespread problem. Also, I asked for a stat on how many trucks like mine have had this problem and the lady said they don't have that information. I don't believe that, does anyone have any info.
  • prd1prd1 Posts: 4
    anybody ever get a rattle in the passenger side airbag cover? i live in phoenix so it only gets in the 30-40s but thats when it happens when it gets cool.
  • nerdnerd Posts: 203
    I am working to get rid of my 2000 Sierra due to numerous problems. I know a couple of guys who have told me "if you have a GM with auto trans, you had better be driving by a repair shop when you hit 100K miles because the trans will conk out then".
  • morin2morin2 Posts: 399
    My last Chevy truck trans lasted 40K easy no-tow miles. Cost $2325 to replace. Chevy dealer was so helpful to point out that if reliability was important to me, I should have bought a Toyota. Dealer was Bayside Chevrolet/Toyota in Prince Frederick, MD. I don't go there anymore, YMMV.

    A lot of us use Mobil 1 or other synthetics in our engines - but I don't worry about the engine -it is most likely going to last much much longer than the GM tranny. Anybody have a auto trans fail after using synthetic trans fluid? Should we all start "GM tranny savings accounts"?
  • rayt2rayt2 Posts: 1,208
    Forget about writing to GM CEO, I did that when I was first trying to buy my Y2K 2500 Silverado from a dealer who could not get an allotment for the truck, Got NO reply to my letter what so ever. If you still insist on writing go to the GM web site and thru there you can track down the CEO and his corporate address, that's how I got it.

    Ray T.
  • chevy4mechevy4me Posts: 203
    My 99 silverado 5.3 auto is doing what I call 2nd gear starts again, only intermitantly but about once a month. From a stop it is sluggish then clunk its in 1st and then it goes normal.Does anyone know if there is a cure or is this one of the "normal" things these trans. do? I'm a week away from warrantee expiring and would appreciate any info. Thanx Todd
  • obyoneobyone Posts: 8,054
    has your dealer updated your trans programming? Might want to check into that. Other than that, when did you service your trans last? Just curious on the second question.
  • I'm wondering if anyone has this problem and knows what might be causing it: When I start my truck, 5.3l, when it is cold in the morning I get an annoying buzzing sound that seems to come from the engine compartment. It goes away after the engine comes off fast idle. The noise is fairly loud and my guess is that something in the engine compartment is vibrating against a part of the chassis or body.
  • chevy4mechevy4me Posts: 203
    I had it at the dealer for this and they gave me the old "can't duplicate problem".So as far as I know no reprograming was done. The truck has only 26k miles on it so I haven't serviced the trans.
  • gator36gator36 Posts: 294
    Is it more like a shudder? I thought I saw a tsb in the past for a driveshaft replacement on the 2wd models. Going from a 2 piece to a 1 piece driveshaft? You might want to check with the local dealer.
This discussion has been closed.