I desperately need an owner's manual for a 1992 Cadillac Seville which belongs to my sister. Her husband died last December and neither of us know how to operate many of the buttons and accessories on this lovely car, since her husband was the only one who drove the vehicle. Please help us so we can understand and enjoy this car! Thank-you! The VIN is: 1G6KS53B6NU816176. Ellen Mansfield and Karen Walker