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Thread: Stock Gears?

  1. #1

    Default Stock Gears?

    im a noob when it comes to all this rear end gear talk. ive been reading and trying to figure it all out. How do i know what gears i have now?? I have a 09 silverado LT 5.3L?

  2. #2

    Default

    Quote Originally Posted by ..chevy4life.. View Post
    im a noob when it comes to all this rear end gear talk. ive been reading and trying to figure it all out. How do i know what gears i have now?? I have a 09 silverado LT 5.3L?
    The way to find out What Gears you have......In your Glove Box is a White Sticker and on it....you will see the Trucks Vin # and a Series of Letters and Number's,those are RPO Code's....Which stands for Regular Production Options....In Short it what your Truck came with from the Factory.

    To find out what Gears you have you will be looking for the following,

    GU5......3.23
    GU6......3.42
    GT4.......3.73
    GT5.......4.10
    Last edited by 99'HEARTBEAT; 11-16-2010 at 08:10 PM.

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  3. #3

    Default

    Yea thanks i actually just found that out. Its the G80 and i looked it up and all it says is Positraction limited slip. what ratio is that tho?

  4. #4

    Default

    Quote Originally Posted by ..chevy4life.. View Post
    Yea thanks i actually just found that out. Its the G80 and i looked it up and all it says is Positraction limited slip. what ratio is that tho?
    In my Post above......You are going to be looking for.....One of those Sets of Letter's and Number's......for the Gear Ratio.....

    The Rear Gears I have in my Truck.....are 3.73......Which is RPO Code....GT4

    The G-80 is Pos/Traction,Limited Slip......It is Not a Gear Ratio....I also have the G-80 in my Truck.
    Last edited by 99'HEARTBEAT; 06-09-2010 at 08:32 PM. Reason: Added infor.

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  5. #5

    Default

    oh ok. yea i looked the first time and G80 was the only G i saw but i guess i looked to quik lol. Thanks for your help. i have 3.42

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