GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 9 of 9

Thread: Dash Noise

  1. #1

    Default Dash Noise

    I have a 2008 Silverado Ext Cab with a 5.3L. When I'm going down the rode at a steady pace between 30 and about 50 mph I get a sound coming from the dash. It sounds like a vibration or rattle. Almost like its a very small ball bearing shaking around in a very small area. Does anyone else get this or know what it is. I'm also wondering if it is a switch or something to tell the convertor to lock up. Driving me nuts

  2. #2
    Jr. Mechanic
    Join Date
    Dec 2007
    Lincoln Nebraska


    Try removing the black plastic engine cover, (it snaps into rubber grommets) then go for a ride and see if it's gone. My 08 Sierra did the same thing and it was a wiring loom rattling on the engine cover. I used wire ties to secure everything and the rattle has been gone ever since.
    2014 Silverado

  3. #3


    I get a rattle in my 99 Seirra that seems to be right in the middle of my dash. Sounds about the same what you have. I will try the same suggestion though.

  4. #4


    I have the same exact noise from the dash of my 08 1500 4x4. I took it to the dealer a while back and of course it would not reproduce the noise while it was there. I am going to try taking off the engine cover also.

    Bobby - North Carolina
    2008 4x4 5.3L V8
    6" Suspension Lift and 1.5" Body Lift
    20x9 Ballistic Jesters w/35" Toyo Open Country MT's & 1.5" rear wheel spacers
    4:56 Yukon Gears
    Hypertech Speedometer Calibrator
    Baja style bed mount spare tire carrier
    Flowmaster 40 series dual exhaust
    Recon Smoked LED tails/3rd brake lights/black projectors w/switchback LED's in the corners
    N-Fab Nerf Steps
    K&N CAI
    No Fear Pedals
    Tint, Line-X bedliner, Window visors, Rear wheel well liners
    Painted front grill, bow ties and door badges, de-"lettered" tailgate
    Powder coated front and rear bumpers

  5. #5
    Jr. Engineer lsutoms's Avatar
    Join Date
    Sep 2009
    baton rouge louisiana


    i seem to have this noise that ya'll are talking about in my 09 ext cab... except mine comes more often on my drivers side column it sounds like.... i cant figure out what it is....
    "I'll Sleep When I Die"

    2009 Chevy Silverado LT1
    295/70/17 Toyo MT's
    2" rough country leveling kit
    magnaflow exhaust
    custom tune
    spray in Line-X bedliner
    deep low profile took box
    6000K HID's
    5% + 20% tint on door windows and rear + layer of 10% rear glass and 5% tint strip
    2 12" Kicker CVT's
    custom sub boxes
    1000 watt hifonics sub amp
    4 6.5" hifonics door speakers
    4 hifonics tweeters
    320 watt hifonics amp
    Quad bell train horn
    5 gallon air tank with 100% duty Viar compressor
    galls street thunder deluxe siren/PA

  6. #6
    Sr. Engineer
    Join Date
    May 2009
    Manitowoc, WI


    The trim around the windshield can make a rattling noise, its really noticeable if you have a bug shield on the truck. A little silicone adhesive under the rubber molding on the sides of the windshield will stop it if thats whats causing it.

  7. #7
    Jr. Apprentice mkruluts's Avatar
    Join Date
    Jun 2009
    Pittsburgh, PA


    My truck has a knock sound that seems to come from the dash as well... It only happens in cold weather and I just assumed it was the tubes and hoses under the cold conditions...

  8. #8
    Jr. Mechanic
    Join Date
    Mar 2010
    Blog Entries


    A friend of mine has a 99 gmc and his had the plastic part in front of window that rattled going donw the road. Might be the same thing

  9. #9


    its pretty common for the front dash trim (the long piece under the windshield w/ the sunload sensor) to rattle. pop it off and put tape around the retainers. you want a "bushing" between the panel and dash

    05 silverado shortbed

Similar Threads

  1. Noise in dash when braking
    By JAnderson2 in forum Lifted & Offroad Suspension
    Replies: 7
    Last: 06-16-2012, 11:17 AM
  2. Help.... under dash noise
    By propilot82 in forum General Chevy & GM Tech Questions
    Replies: 7
    Last: 02-27-2010, 07:55 PM
  3. Crackling noise in dash
    By brogers93 in forum General Chevy & GM Tech Questions
    Replies: 1
    Last: 01-12-2010, 02:33 PM
  4. chevy silverado dash vents dash part ac heat vents
    By ChevyFan in forum Chevy Parts eBay
    Replies: 0
    Last: 10-15-2009, 06:00 PM
  5. New Under-the-Dash Noise
    By F E Knucklebuster in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 1
    Last: 07-25-2009, 06:57 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts