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Glove box codes

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Me89'Jimmy, Mar 9, 2003.

  1. Me89'Jimmy

    Me89'Jimmy 1/2 ton status

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    I took a look at my glove box in my 89 jimmy and noticed there were a bunch of factory codes, my buddy told me that they are all options codes. Can anyone send me to a website or something that tells me what these codes mean. Thanks /forums/images/graemlins/k5.gif
     
  2. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    We have a complete list of the RPO codes in the Bloody Knuckle- all you gotta do is buy a membership to gain access. There's loads of other goodies in there too.
     
  3. R72K5

    R72K5 Banned

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    use google.com or yahoo search bar which is also google now use keyword RPO with each code too. or list soem or all of them in a reply to this thread, many of us can find out what all or most of them are

    good luck
     
  4. wrathORC

    wrathORC 1/2 ton status

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    Do a search. They're regular production option codes. I keep my list at www.wrath.com/rpo/.
     
  5. 88sub4x4

    88sub4x4 1/2 ton status

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    GU1 I think it is a 2.42 or 2.43 Thanks
     
  6. wrathORC

    wrathORC 1/2 ton status

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    Less than 2.73 was never used in a truck to my knowledge. They were pretty common in Impalas and other large cars (especially the bigblock Cadillacs) of the 70s though.
     
  7. 88sub4x4

    88sub4x4 1/2 ton status

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    My 88 sub with 10 bolts has that. GU1 with a 2.42 or 2.43 ratio. It sucks. I've got 4.10 for the rear axle waiting for nicer weather. I need 4x4 till the snow melts. Can't find a front axle around here. /forums/images/graemlins/burb.gif
     
  8. R72K5

    R72K5 Banned

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    gu1 is 2.41 car ratio. commonly found in 7.5" 10 bolt which is car axle, 2.73 and up is what truck(8.5") got in them
     
  9. wrathORC

    wrathORC 1/2 ton status

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    I think you probably have 2.73 still but that's bad enough. Even taller gears would suck more than anything had ever sucked before. I have 2.73s and they blow donkeys in July. Even though I have a 305 that scares most mild 350s my truck can barely even get out of its own way. I can't imagine adding a couple thousand more pounds and then try driving it around.

    I have a pair of 3.42s that are going under mine. I couldn't find 3.73s or 4.10s so I guess I'll settle for 3.42. It should help a little.
     
  10. 88sub4x4

    88sub4x4 1/2 ton status

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    The GU1 is what i've got. Does that mean I have a 7.5" ring gear? I Overhauled the axle last year and sure enough it was a 2.41 I don't remember what the numbers were but I divided the ring teeth by pinion teeth and came up with 2.42 on calculator. I looked in the glove box last night and it said GU1. I think the truck has a factory tow package too, so go figure? /forums/images/graemlins/burb.gif
     
  11. TK5

    TK5 1/2 ton status

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    This is the only code numbers I have in my glove box.



    1 C 8 E K 1 8 C O D F 1 5 9 6 8 3


    Any help decipering this number? Seems this my vin number.
    No other numbers are there.
    Just trying to figure out what gear I have in my 10 bolts.

    Thanks. /forums/images/graemlins/k5.gif
     

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