auto trans wont shift in high gear on 1993 Mazda MX-6

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automatic transmission wont shift into high gear.Does not seem to slip,just wont go into high gear.
(1) Answer
Does it shift at all? Your transmission is a 4 speed unit - three and overdrive. How fast are you able to go?

With any transmission problem, it is best to start by checking the fluid level and condition. If low, shifting may be compromised. If burnt or dirty, it could be a sign of internal wear or damage.

Beyond this, you will need to consult a qualified technician. Good luck.