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2005 chevy trailblazer_ls
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G80 auto locking Diff. how do i know if i have that diff?? is there any serial bageing or G80 stamp on it ?? i bought mine used and i didnt see any sticker on the TB when i bought it(was shipped from up state florida to me)
 

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Check inside the glove box and look for these codes.....Good luck!

-G80: Differentia,l locking, heavy duty, rear
GT4-3.73 ratio
GT5-4.10 ratio
GU6-3.42 ratio
 
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