will the rear axle of 1999 chevy blazer fit and have same gear ratio as 1999 gmc jimmy both are 4 door 4x4 suburbans
my guess is yes it will fit. if you want to be sure they are the same ratio pull the cover off and count the teeth on the ring and pinions gears. if they are the same then your good to go
Do not swap unless the ratio is the same
if you check the rpo codes in the glove box and the codes that begin with G are the same you should be alright
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