can you extract what rear end ratio is on my truck via the serial number 1gtek19v8z347602
That's not a VIN, a VIN has 17 characters and there are 16 there. But the answer is yes, with a VIN.
http://www.super7thheaven.co.uk/Sierra_Rear_Differential..........paste that in your web adress box (not search)
Call your local gm dealer service department, and they can get it from their gm site
look in the glove box there should be a silver coloured sticker with a bunch of 3 digit build codes. the codes that begin with G are for the rear axle ratios. GT4 = 3.73 GT5 = 4.10 GU5 = 3.23 GU6 = 3.43 G80 = locking rear diff G86 = Limited slip rear diff hope this is helpful
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