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Old August 10th, 2015, 6:30 PM
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How do I find out the Axle Ratio?

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Old August 6th, 2009, 5:59 PM
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Default How do I find out the Axle Ratio?

I just purchased a 2002 Silverado, 4.8L V-,8 Automatic, 4WD, Extended Cab, Short box, tow package. I'm trying to determine my towing capacity. The manual says it depends on my Axle Ratio and I've either got a 3.73 or a 4.10. I don't have the original purchasing documents, how can I determine the Axle Ratio? Does the towing package also include the 4.10 ratio automatically?
Old August 6th, 2009, 6:06 PM
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look in your glove box for the rpo code:

gt4 is 3.73, gt5 is 4.10, gu6 is 3.42

those are the most common
Old August 6th, 2009, 11:49 PM
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Ok so, I remember those three codes but what about the G80? I got that and would also like to know around about what the ratio might be. If I were a bettin man, I'd say gafftaper has 3.73, and that I have a 3.73, But i've been known to be incredibly wrong at guessing.

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Old August 7th, 2009, 1:31 AM
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http://www.c2e.info/rpocodes/

check out your codes here
Old August 7th, 2009, 7:43 AM
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G80 is just the code stating if you have the locking diff or not. you can get it no matter what the ratio is.
Old August 7th, 2009, 11:28 AM
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Thank You! It's the 3.73.
Old August 17th, 2013, 3:03 PM
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How do I find the rear axle ratio on our 2003 Chev Kodiak C5500 VIN #1GBE5D1133F517661?
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