1. Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online
    Online since 2004, we are the #1 Chevy Truck & SUV forum and user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free
    Registering is Free and Easy! Hope to see you on the forums soon!

How can I find out which tranny I have?

Discussion in 'GM Diesel & DuraMax' started by omnisi, Mar 23, 2009.

  1. omnisi

    omnisi Rockstar 100 Posts

    Its a 1990 Suburban 1500 4x4 with 6.2L diesel.

    I see the codes on the glove box, but have no book on it to tell what they mean.

    How can I tell? Anything to physically look for?

    Thanks
  2. GaryL

    GaryL Epic Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    Look at the codes on the glove box sticker and find the ones that start with "M". You will probably find an M30 which is the 4L60E, or an MD8 which is the 700R4

Share This Page