no third gear problem--help

[stanger66]

Ok guys,

This is what I have done so far, I did a trans flush replace the pan gasket/filter and when I looked in trans didnt see any slug and it was clean like brand new (valve body) so I did another trans flush and added the lube modifer. I also had check the valve modulator for vaccuum and no vaccuum loss. I driven it for two weeks and still have no third gear. Should I just take it to the trans shop.

My friend heard there is something different with my c-4 than others something about a green dot trans what ever that is.
Do you know what he is talking about?

ross