I would just replace it, do a search on ebay for a trip odometer for a 93 lumina, I believe all of them 1990 to 1994 are all the same. Someone correct me on that. Pull the dash apart, and replace, I dont know if you can just buy the trip, though, might have to buy a whole new instrument cluster, but, hey, if the new one you buy only has 40,000 miles on it, no biggy, right? he he he, I wont tell if you wont.