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Which trans in 2008 z71

Discussion in 'GM Powertrain' started by torqydd, May 11, 2011.

  1. torqydd

    torqydd New Member

    I was poking around looking at doing to trans upgrades like some of the kits from Oregon performance trans. Was wanting to make sure that my 2008 z71 5.3 is still using the 4L60
  2. 99'HEARTBEAT

    99'HEARTBEAT Moderator Staff Member ROTM Winner Platinum Contributor 1000 Posts

    To find out what Transmission you have, Go to the inside of your Glove and you will see a White Sticker.....with your Trucks Vin # and a Series of Letter's and Number's.....those are RPO Code's, in short what your Truck came with from the Factory,

    You will be looking for one of the Following RPO Code's,
    .....M30.........which is the 4 Speed Auto.....4L60e
    .....MYC........which is the 6 Speed Auto.....
    .6L80

    Edit:.....Forgot about the 3rd Transmission...RPO Code...
    ..MYD......which is the 6 Speed Auto......6L90.


    Last edited: May 11, 2011
  3. torqydd

    torqydd New Member

    I do appreciate it i used to have the meanings to those codes. Now just out of curiosity I am going to search but has anyone seen a right on how to install the vette servo on here

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