Our 1994 Buick Roadmaster is being serviced for rough shifting. The mechanics stated that they had changed the computer. They also said that they must now bring the car to a dealer shop to reset the computer because their equipment only goes back to 1995 Buick Roadmasters and they must have a dealer reset the computer. This does not agree with all that I have read regarding the computer reset. The VIN is: 1G4BN52P8RR413337. Please advise me accordingly.