1995 Oldsmobile Aurora wont shift out of low

The shifting control selonoids come in a pack and are in the lower pan. The pan gasket tot he trans should be rubber and is re-usable up to 100 times, so re-use it. The selonoid pack is about $75 at a local trans outfit, but thats wholesale. Otherwise it is best to take to a trans shop. $300 should fix the issue w/out a hitch. The aurora's have this issue pretty badly.