Originally Posted by '96BonnevilleL67
That'* what I thought. Now back on topic!
I need to make a correction.. Its a 97, Not a 99, And it does have a vacuum modulator and says 4t60e on it. (And all documentation i read said that the w-body retained the 4t60e until 9
It appears now that the differential has failed... Has anybody replaced one before? I'm fairly confident in being able to do it, but i've never messed with transmission internals before (nothing serious, i've installed a shift kit)...