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Thread: VIN/RPO issues

  1. #1

    Default VIN/RPO issues

    I have been doing some research for future mods lately. I have gone to a few VIN decoder sites for general info for my truck. What I have come across is the info that my VIN shows is incorrect. According to my VIN I have a 4 speed tranny. Well mine is a 6 speed. The glove box paint code is incorrect also. How many of you have come across this issue? What is the cause of this? I ask these questions because I hate to look like I don't know something when in fact I am going off of the info provided.

    2011 GMC Sierra SLE - 5.3 - 4X4 - Z71 - King Shock Level Kit - Body Color GMC grill emblem - 2 Tone Engine Cover, Rad Cover and Battery Box - Volant CAI - Tru Cool 40K tranny cooler - Sylvania ZXE bulbs Hi/Low -TriFold Hard Tonneau Cover- CoverCraft Seat Covers - Diablo inTune - GoRecon LED under rail lights - GoRecon LED White Lightning Tailgate Light Bar - Windows tinted to 45%- Kenwood DNX6990 - JL Audio C5-650 &650X- JL Audio Amp- Interco Truxus M/T 33x12.50x18

  2. #2


    Hmmmm, you have the M30 code instead of the MYC code on the glove box label?

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  3. #3


    On the label in the glove box says MYC. Is the MYC the code for a 6 speed?

  4. #4


    Quote Originally Posted by aloxdaddy99 View Post
    Is the MYC the code for a 6 speed?
    Yes, the 6 speed light duty auto.

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