Auto or manual?..If manual,stock or aftermarket shifter?..If aftermarket-check the stop bolts.Once my front one (closest to dash) worked loose and backed out a little.At first it wouldn't go far enough in to engage 3rd,and before I could get it home I couldn't get into 1st or 5th either.Ran the bolt in and locked it back down,all OK..If it's not that..?bent shifter fork inside the
tranny?..If Auto
tranny,I haven't got a clue!!
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"Life is not a journey to the grave with intentions of arriving safely in a pretty well preserved body,but rather to skid in broadside,thoroughly used up,totally worn out and loudly proclaiming.....WOW!.....What a ride!
"As you grow older,don't slow down,speed up-there's less time left"--over 45 and just now realizing how much I don't know
transmission shift problem 
