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Chevy Silverado and GMC Sierra Noise and Vibration

jabo2jabo2 Posts: 1
I have a 2005 Chevy Silverado 1500 crew-cab,2wd.I have a noise coming from under the hood somewhere that sounds kinda like a whining car horn.When you push down on the gas pedal, that's when you hear it.After a few seconds it will go away.I took it in to the dealer and of course they could not find any problem.This is something I listen to everyday,and they could not find or hear the noise 1 time,so they give me a clean bill of health.Is there anyone out there having a similar problem?Thanks.
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Comments

  • It's called Chevyitis - it basically means you bought the wrong truck. Don't worry - I'm sure a few recalls down the line it will be fixed.
  • gumpp08gumpp08 Posts: 1
    I have an 02 silverado it has 79000 miles and the motor makes a tapping sound. It sounds like a lifter, I took it in under warranty and they say that it is typical. They say it is carbon on the pistons. They won't do anything about it. Anyone have this problem and what did you do??
  • obyoneobyone Posts: 8,065
    The engineers at GM have determined that this tapping noise will have no effect on longevity of the motor. That is why the dealer will not do anything. Course they are suppose to explain that to you. Now whether you beleive that or not well that's another story.

    BTW, there is a TSB out addressing this and it does state what I've typed above.
  • jamcijamci Posts: 1
    2005 Sierra - same noise - nobody knows what it is.
  • p100p100 Posts: 1,116
    Actually, the engineers at GM have determined that there is nothing they can do about it because the upper management told them to STFU. It can probably be stated that the tapping noise will make the engine readh the 100k mark, and that's probably good enough for them.
  • jnealjneal Posts: 247
    I had a strange noise under the hood of my old Chevy once while cranking it......mama's cat never was the same after that!! :sick:
  • noobie1noobie1 Posts: 326
    Longevity aside, what the engineers and that TSB (GM) do not address is the lost value to the vehicle caused by the tapping. I, and I assume most smart buyers, would not buy one making that noise (without significant discount).

    -David
  • My 2002 Silverado 1500 makes a high pitched sound when I start the engine. Although the sound goes away after a few minutes of idling, when I engage the drive and give it gas it starts again and the pitch increases/decreases depending on if I push the gas pedal down/let go. This is when the truck is in motion. Is this the fuel pump?
    Thanks in advance for your help.
  • I just bought an '07 Silverado 1500 crew cab,
    short bed, 5.3L, 2 wheel drive, 3.23 rear. The
    stock exhaust has an irritating low frequency
    drone when I give it gas. I have tinnitus and am
    very sensitive to noise. I need this thing to be
    near silent! There are several options:

    1) leave it be for a while and let the muffler
    break in. Maybe it'll quiet down.
    2) add a resonator (a dynomax super turbo, for
    instance) before the muffler, but that would put
    it right under the cab.
    3) wrap the stock muffler with some kind of sound
    insulation.
    4) insulate the cab with acoustic material.

    Has anyone else noticed that this automatic
    transmission whines under certain conditions?

    Other than that I like this truck. Reasonably
    quiet (besides the wind noise). It doesn't feel like I'm driving a four story building (F150).
    It also puts out relatively low electromagnetic field (EMF) emissions. For other truck EMF ratings see, www.ahappyhabitat.com
    Warning to Toyota Tundra drivers: You are being exposed to a good deal of EMF.

    Best,
    JES
  • l204l204 Posts: 6
    Sounds like the serpentine belt is slipping and or you may have a broken or weak tension pully. When you first start it up its under strain because the alternator, water pump and A/c all kick in. Then they get up to speed until you step on the gas and speed everything up. A fuel pump is under a steady pressure. You can check this by taking the belt off and starting it. Just dont run it long. NO Engine COOLING with out the belt on. Also keep in mind if its a bearing in the alternator or water pump it will also go away when you take the belt off. Where is the sound coming from? Under the hood or back Of the truck?
  • I have a noise coming from the drive shaft area. Thought it was a disc brake squealer, turned out I was able to eliminate those. Sounds like it may be coming from the drive shaft center support bearing. Does this seem to you, that this may be where the problem is? If so what are my repair options?
  • My 2000 Silverado is making the same noise. It started this summer with about 55k miles. It sounds like a "steam teapot" or a coil of wire violently unwinding and only lasts for a second or two. My guess is something in the torque converter.

    If you do a search for "steam teapot" on the forum you will see someone else had the issue, but did not leave me a way to reply. He had a newer truck also.

    If you search on "Driveline Vibration/Growl Noise" (msg# 329) there looks like there is a TB on reprogramming the PCM. I just started looking into this issue and the TB mentions something about the torque converter clutch exciting various driveline components.

    Other than the noise, I have not noticed any other symptom or side effects.

    Let me know if anyone else discovers additional info.
  • The searches I mentioned earlier are located at:
    GMC Sierra: Problems & Solutions
    msg# 329 - Tech Bulletin
    msg# 1454 - Other post about issue.

    Good luck
  • Here is the TB info:

    Driveline Vibration/Growl Noise (Reprogram PCM) #99-07-30-024
    Driveline Vibration/Growl Noise (Reprogram PCM)
    2000 Chevrolet and GMC C/K Utility and Pickup Models (Silverado and Sierra)

    with 4.8 L or 5.3 L Engine (VINs V, T -- RPOs LR4, LM7)

    and Hydra-Matic 4L60-E Transmission (RPO M30)

    Condition
    Some customers may comment about a driveline vibration/growl noise at speeds between 56-80 km/h (35-50 mph) with low engine speeds.

    Cause
    Engine torsional vibration when the torque converter clutch is engaged at low engine speeds, 1100-1400 RPM, can excite various driveline components. These driveline disturbances can cause noises and vibrations that the driver may feel and/or hear.

    Correction
    Reprogram the Powertrain Control Module (PCM) with the calibrations listed in this bulletin.
  • Hello everyone,

    First time to this site and all I will say is wow there is enough awesome info. here to keep me up way too late at night learning. Anyway I shall be purchasing a new Silverado by the end of January and was very interested of course in finding out if anyone out there has or is going to be doing the same and what the heck people are paying for these expensive machines. I have invoice and MSRP already but I don't have anyone in the business so I won't be getting any "plan" discounts. Any help would be great. Thanks ya'll.
  • jcee3jcee3 Posts: 3
    I noticed this about a week ago when I stopped at a gas station in the middle of the night to buy a pack of smokes.

    As I returned to my already running truck I noticed a humming/buzzing sound coming from right behind the driver side , where the cab meets the bed of my truck.

    To give a better idea of what kind of noise it was making imagine a leaf blower from a hundred yards away.

    I drive my truck for a living and have 180,000+ miles on it already.

    Does anyone have an idea of what this sound could be?

    Thx in advanced for any help.
  • gmcjoegmcjoe Posts: 11
    Although the board moderators might frown upon you starting a new thread for this, I'll attempt an answer here. I'm no expert, but if your truck was running as you stated, you were probably hearing the electric fuel pump, since it is located in the tank just inside the left frame rail. My '00 makes a slight buzzing noise that is more pronounced when the tank is empty. I've heard others describe the same symptom, but I don't know if it means that pump failure is imminent. I'll worry about that if and when it happens to mine.
  • jcee3jcee3 Posts: 3
    Thanks for the help I apologize for starting a new thread , I wasn't sure where to post...

    my buddy suggested it was the fuel pump as well but I wanted to get some confirmation from a third party before getting it fixed...
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