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  1. #1

    Default 2003 topkick lug nut size?

    Can anyone tell me the socket size i need to remove the wheels
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    on a 2003 c4500 I think it's 30 mm but not sure

  2. #2


    You're not trying to steal the wheels off that ambulance, are you?

    Seriously though, Welcome to the club!

    I don't know the answer to your questions, but I know we have a few Topkick / Kodiak owners here so I'm sure someone will be able to answer your question soon.

    2001 Silverado Reg. Cab Not-So-Base -- SOLD
    2003 Avalanche Z71. No Cladding. Check out my Mod thread.
    1974 Triumph Spitfire 1500 - Work in Progress
    2003 Sierra 3500 Duramax. The Newer, Better Work Truck

  3. #3
    Jr. Mechanic pychokenny's Avatar
    Join Date
    Jun 2010
    Parkin, Arkansas, United States


    Year Model
    Bolt Circle
    Lug Nut
    Set Number
    "U call we haul U bitch we unhitch.''
    "Gear grindin, Tire burnin, Diesel smoke blowin. Truck Driver."
    | Pycho Kenny..... |||""'|""\__,_
    | _____________ l||__|__|__|)

  4. #4


    Just pull into the local parts store and they will let you size up a socket. Some will even bring a couple out and help you get the right one. Or go to a discount tire store and ask them . they will even check your air for free while helping you
    2010 Chevy Silverado Z71 ext cab.4x4
    72 Monte Carlo 350-415 hp- sold (June 2011) to pay medical bills
    79 Impala 350 4bbl 375 hp- sold (June 2011)to pay medical bills

    "If He asks you to go a mile go two"

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