I have a 1999 Silverado 1500 Z71. I have not been able to find a definitive answer as to the stock differential. Google searches bring up the Eaton G80 but never for my exact truck. So, to those in the know, does my truck have an open, limited slip, or locking rear differential?
Thanks in advance.

 

Get the code from the glove box and google it. It will tell you exactly what you have.

 

You can also run your VIN # and itll tell you all your options ill look for the link..

http://www.compnine.com/vid.php

 

Like said, look in the glove box on the RPO sticker... If it says G80 then there ya go.

 

No locker. Oh well, one more thing on the list. Thanks to all for the responses.

 

Get a detroit Tru-Trac.

Be glad you dont have a G80 to explode and *** up your gears.

 

i have a g80 in my 02 z71 no prob yet at 160000km. ive never realy seen rear diff prob in these trucks. seen one chew up spider gears at 400000km. and it had lack of maint. and somebody got it stuck in a dich and kept floring it and blew it up.

 

It wouldn't matter, I don't run her that hard. Just want to know I can get anywhere if I want to. I'd consider the Tru-Trac, as well as others. I was looking at the Richmond Lock-Right & Powertrax as well. Any opinions on these and others would be great. Thanks

 

Go with the TruTrac or something similar.. the lock rights and power trax can get quite annoying and if you dont have the exact same size tire inflated the same on each side it will constantly click and wear itself from locking and unlocking while goin down the road.

 

A Z71 without the G80 option? WTF