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  1. #1
    Jr. Apprentice
    Join Date
    Jan 2009
    Location
    Sun Prairie, WI
    Posts
    15

    Default remove air dam under bumper

    I have a 08 chev silverado nbs, ext cab, 5.3l, 4wd, G80.
    My question is the purpose of the air dam/spoiler under the front bumper ...Does it actually serves a purpose.
    What will happen if i take it off, it looks easy to do? Darn thing scrapes on everything when wheeling (lightly)

    GSPMAN


    Hunting Rig:
    08 Silverado Ext Cab Z71, 4X4,5.3 liter w/ems, G80, 5:73 gears,Auto,17 in wheels

  2. #2

    Default

    I don't know for sure, but I do know that on the earlier models the lower air dam is good for a little better fuel mileage. I had '99 that I thought would look better without the air dam and lost at least 1/2 mpg. I ended up reinstalling it and sure enough my mileage went back up. It is for a "cleaner" flow of air under the truck. Good luck!


    2010 Z/71 Colorado C/C
    Black 4X4 w/5.3L V8
    ===============
    2007 Winnebago Adventurer
    w/8.1L Chevy & Allison 6spd.
    Canyon Lake, Texas

  3. #3
    Legend bry2500's Avatar
    Join Date
    Oct 2008
    Location
    Gloucester, MA
    Posts
    2,201
    Blog Entries
    4

    Default

    If your wheeling gas mileage is not an issue to you very much. ZTake it off for wheeling and through it back on for highway driving. They come on and off pretty easy.
    BRYAN

    "IF YOU DON'T TREAT IT LIKE A TRUCK IT'S JUST A REALLY BIG CAR"

    02' Avalanche 2500 Onyx Black
    8.1L Vortec
    43,000 miles

  4. #4

    Default

    I have an 09, and in the owners manual is says that you can remove this piece for off-road applications. They recommend replacing it afterwards.

    I took mine off the truck with 23 miles on it, and it remains in my shed until now. I haven't made a real good effort to check my MPG, but I like the stance it give the front of the truck much better without the piece in place
    2009 Silverado 1500 CC Black Granite Metallic - 8000K HID Low/High, K&N 63 series Intake, Fire and Ice lightbar, Truxport Tonneau, Debadged Tailgate, Billet front Bowtie, Chrome Grille Inserts
    2009 Pontiac G8 GT 361HP - Wife's car
    1988 Chevy Monte Carlo SS - Black - 64K Original Miles! Bone Stock

  5. #5

    Default

    I do believe that it's to help catch air and blow it up into the rad. and such. But overall i don't think it's gonna make that much of a difference.
    Last edited by 04SilverChevy; 03-30-2009 at 05:06 PM.

  6. #6
    Legend cascott325's Avatar
    Join Date
    Aug 2008
    Location
    Lawrenceburg, Kentucky
    Posts
    1,709

    Default

    i never thought ofit oin the newer models, but i dont like it on the older body styles
    2000 silverado with a 5.3l v8, shorty headers, upgraded plugs, 10 mil wires, magnaflow high flow cats, flowmaster 80 series muffler(2 in 2 out) w/ 18 inch stainless silverline tips. i have a k&n CIA. its a 4x4 z71 offroad package. Ls model.
    extended cab 160k miles, truxedo low profile bed cover, diablo sport predator tuner.
    reman tranny @ 130k miles
    Chris

  7. #7

    Default

    i never liked to look of the air dams, i would take it off

    2003 Z71 Silverado LS
    Access roll up cover
    Bed Rails
    Billet Grill insert
    Bed Rug
    CB with PA system
    Waiting to be installed
    Two 8in RF HX2 punch( would have 12s but they got stolen)

  8. #8

    Default

    i took it off my new body sierra and it doesnt run any hotter and gas mileage stayed the same

  9. #9
    Sr. Apprentice
    Join Date
    Sep 2008
    Location
    Knoxville, IA
    Posts
    65

    Default

    I 'took' mine off when I put the 'Burb into a shallow ditch a couple Winters back! Not the way I would suggest doing it, but luckily it was the only damages! I have thought about putting it back on (or a new one anyway) to see if anything improves.

  10. #10

    Default

    Thanks for giving me more ideas

    edit-done! I didnt know it was as simple as removing 2-10mm screws!
    Last edited by 5point3; 06-02-2009 at 04:14 PM.
    1973 Chevy Nova Drag Car 10.34 @ 128-Still not fast enough!
    2008 Chevy Silverado LT Z71-Sold
    2006 Chevy Trailblazer LT-Sold

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