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The absolute best site for chatting about trucks. |
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| What Gears do I have? |
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| Finding out what gears are in your truck, is very simple. |
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| First look for a list 3 digit codes, which is on a sticker inside the truck. In these GM trucks they are usually found inside the glove compartment. |
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| Once you have found the sticker of codes, look for codes starting with a G. |
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| Rear axle Codes: |
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| G80 = Locking Rear axle/Positraction |
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| GU2 = 2.73 |
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| GU4 = 3.08 |
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| GU6 = 3.42 |
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| GT4 = 3.73 |
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| GT5 = 4.10 |
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| Click for a complete list of all the codes in GM trucks. |
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