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Option Codes on 96?


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Posted

Can anyone tell me what option codes to look for to see if I have a locking rear and what codes indicate the axle ratio?

 

Thanks!

Posted

I believe the RPO codes for the C/K trucks (1988-1999 early) are the same for the various years. Open the RPO codes here on GM-TC, select 1998 and scroll down to the "G's", several listed. My 1993 matches the RPO codes 'G80' for Locking Rear Differential and 'GU6' for 3.42 Rear Axle Ratio.

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