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  1. #1

    Default Noise in dash when braking

    I just recently purchased an 02 Suburban w/ 45k. This is my second 02 and my first was quiet and no issues, but this one has what I hope is just the “Piston Slap”, noisy vent fan and a noise in the brakes. When I press on the brakes a noise comes from what seems to be in the front middle of the dash. It’s in between a whine and a squeal and get louder the hard you engage the brakes. Light braking doesn’t make any noise, but anything beyond slightly aggressive makes the noise. I believe it is on the inside of the firewall in the center of the vehicle under the dash, but could possibly be under the hood. Any ideas?

  2. #2


    maybe a vibration is causing it. does the steering feel tight? any vibrations when you brake?
    1997 K1500 Silverado 4X4. Black Exterior, grey/black interior. 35X12.50X15 wheels and rubber, ProComp 6inch lift 6 shocks in the front 2 in the rear, 3 inch body lift, a few cosmetic mods. Nothing major. Custom leather interior, and stereo upgrade is the future mods.

  3. #3
    Legend mmorgan1865's Avatar
    Join Date
    Feb 2010
    Port Orange, Florida


    You've checked the pads and rotors and everything is fine there?
    2010 Silverado Ext. Cab LTZ 2 WD 6 ft bed
    5.3L 6 speed w\ 3.08 rear end
    Navigation Package
    Westin lighted boards
    Undercover SE tonneau cover
    It's a start!

  4. #4


    need... more... information... lol

  5. #5


    Everything seems to be fine, it drives nice and no vibration or pulls in the wheel, it just has a noise when engaging in the brake. I may not be able to add much more info, I strongly believe it is coming from in the dash. It may be a something loose in dash that squeaks shifting forward and is noticed when breaking. I’ll keep looking, let me know if anyone has any additional comments.


  6. #6


    I have similar problem in '03 silverado, Some how I believe it had something to do with booster, not sure though.

  7. #7
    Sr. Engineer Dana W's Avatar
    Join Date
    Dec 2011
    Chuluota, Florida


    See if there are any possums up under there.

  8. #8


    Could be 2 coons in a gunny sack??? could it be something thats with the brake pedal itself??

    2009 Chevrolet Silverado 1500 LT Z71 Crew Cab "All-Star Edition"

    Line-X'd Bed
    Line-X'd Custom Brush Guard(Heavy Duty)
    5.3L Flex Fuel
    275/65R18 Toyo Open Country AT2's
    2" Rough Country Leveling Kit(want to get the 2.5 RC kit)
    EGR In-Channel Vent Visors
    Exterior PLUS Package
    Interior PLUS Package
    K&N Drop-In Air Filter
    Cat-Back Dual Exhaust
    Black Bowties
    Diablo Sport Predator(AFM Disabled)
    Towing Mirrors
    Next Planned Mods
    Blacked out Tail Lights
    Aftermarket Rims

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