Join Date: Mar 2007
Location: Dayton, WA from Othello, WA
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Having pushbutton 4x4 is in no way an indicator of having a posi. Open up your glovebox, look for the sticker with all the 3 digit codes on it, those are you RPOs, or Regular Production Options. Code G80 = Eaton "Locking" Differential. Locking is in quotes because that is what GM refers to it as, in truth it's a little POS with too many undersized moving parts that like to break and wreak havok to unsuspecting people.
Sierra Classic 2500HD SLT, 4x4, EC/LB, LBZ/Allison
, Summit White with Charcoal Leather, dealer installed Westin Platinum Series bars and a Line-X.
R.I.P. Jason (willyswanter) Payne