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Finding out Rear end gear?

This is a discussion on Finding out Rear end gear? within the Drivetrain forums, part of the LSx Technical Help Section category; I read the FaQ but it just told how to fing out what rear end gear by counting the teeth. ...

  1. #1
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    Finding out Rear end gear?

    I read the FaQ but it just told how to fing out what rear end gear by counting the teeth. Is there a way to find out what you have by the VIN #? A sticker somewhere on the car maybe? Thank you!

  2. #2
    Senior Member Danger731's Avatar
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    auto is either a 2.73 or 3.23,
    m6 3.42.
    If it's auto the option code GU5 on the door means 3.23 rear.

  3. #3
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    Look at the RPO codes on the drivers side door:

    GU2 2.73
    GU5 3.23
    GU6 3.42

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    Junior Member billabong26z's Avatar
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    How do you know what abs the car has?

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    You mean 3 or 4 channel? The NON TCS cars are 3, with one sensor on top of the pumpkin - TCS cars are 4, with a sensor at each rear wheel.

  6. #6
    Junior Member billabong26z's Avatar
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    What I was asking is how do I know which one I have? I have 2000 Formula WS6 TA A4 with 3.23.

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    Sorry, still not sure what you're asking...NW9 is the TCS RPO code, '99 and up have the Torsen unless it has the SLP Auburn option.

  8. #8
    Don't Listen to Me NE98LS1's Avatar
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    thanks for that info on the GU codes, i was always wondering what mine was, guess i got lucky with the GU5-is that more common or rare than the GU2?

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