Gears ratio

[Ryan698]

In my 2015 5.3 where do I look to see witch gears I have when I bought my truck i drove it i loved it and had lots of power not complaining at all just for my knowledge would like to know witch u have its an all terrain with tow package..

 

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[LongrangeLauber]

Should say on your window sticker if you still have it. If not, someone I'm sure will chime in with which RPO codes are for which gear ratios (you can find RPO codes in upper glove box on a sticker)

[Ryan698]

This window sticker is this the one printed in the glass in black that also says tint level and where about in the glove box am i looking for these numbers..

 

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[chuckl1218]

Easiest way to tell is RPO Codes in glove box (silver sticker). RPO GU4 = 3.08...RPO GU6 = 3.42

 

GT4 Rear axle, 3.73 ratio GU4 Rear axle, 3.08 ratio GU5 Rear axle, 3.23 ratio GU6 Rear axle, 3.42 ratio

 

There is a RPO code lookup link in the main documents sticky of the forum here:

http://www.gm-trucks.com/forums/forum/169-20142015-chevrolet-silverado-gmc-sierra-1500/