Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

axel codes?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by bablazer73, Jan 11, 2001.

  1. bablazer73

    bablazer73 1/2 ton status

    Joined:
    Apr 4, 2000
    Posts:
    3,363
    Likes Received:
    0
    Location:
    upstate ny
    somebody asked me and I don't know. what axel is this code?
    BH3 G138
    anybody know where there is a complete list of codes online?

    your right. I don't understand the jeep thing!
     
  2. Blazer_Boy

    Blazer_Boy 1/2 ton status

    Joined:
    Dec 16, 2000
    Posts:
    1,669
    Likes Received:
    0
    Location:
    Sioux City, IA, USA
    There's a list hidden in this forum somewhere. Try searching in this one for a code like GU2 or something like that, the list should pop up.

    (Please direct all hate mail to "Blazer_Boy" because I don't think "BlazerBoy" would appreciate it [​IMG])
     
  3. Mr Red

    Mr Red 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    263
    Likes Received:
    0
    Location:
    Washington, DC Metro Area
    I have a list and neither of those codes are on it. The list is for '86 vehicles but I've seen it cover other years.

    This used to have codes but I couldn't find them the last time I looked: <A target="_blank" HREF=http://www.chuckschevytruckpages.com/>http://www.chuckschevytruckpages.com/</A>

    If you don't find it, email Chuck. He was prompt the last time I traded emails with him.

    good luck,
    [​IMG]
    <font color=red>David, '86 K5</font color=red>
     
  4. 82K5

    82K5 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    191
    Likes Received:
    0
    Location:
    kansas city
    BH3 is listed for 1984 going in a model K1 (4x4), 2.73 gears, size is 8.50, brake is 11.15 x 2.75 and it is a positrac. G means it's from GM corporate Gear and Axle and 138 would be the day it was made. Around may 20th of 1984.

    Phil from K.C.
    1982 K5 Blazer Silverado
    Built in Flint, Michigan-January 1982
    It has one of the very first 700R4 transmissions ever built.
     
  5. 90K5

    90K5 1/2 ton status

    Joined:
    Jun 1, 2000
    Posts:
    3,719
    Likes Received:
    0
    Location:
    Lubbock, TX
    GU2=2.73
    GU4=3.08
    GU6=3.42
    GT4=3.73
    GT5=4.10
    HC4=4.56
    G80=Gov lock

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  6. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Two different things are being discussed in this thread. BaBlazer73 is asking how to decipher the code that is physically stamped into the axle at the time the axle is manufactured.

    The Regular Production Option (RPO) codes are used on the assembly line, so the workers know what parts to install on a particular vehicle. These can be found on the build sheet and on the sticker that's either in the glovebox or under the hood of GM trucks. These are the GU4, GT4 type codes. They're not the same numbers you'll find stamped onto the axle tubes themselves.

    Also keep in mind that either of these codes only indicate what was true at the time of manufacture. An axle that left the factory as a 3.73 open diff, could have 4.56's and a Detroit Locker that have been installed after the rig left the factory.

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     

Share This Page