New or Significantly Altered Models
- 1990 Buick Reatta convertible
Mostly Unchanged
- 1990 Buick Century
- 1990 Buick Century coupe
- 1990 Buick Century wagon
- 1990 Buick Electra sedan
- 1990 Buick Estate Wagon
- 1990 Buick LeSabre
- 1990 Buick LeSabre sedan
- 1990 Buick Reatta
- 1990 Buick Regal
- 1990 Buick Riviera
- 1990 Buick Skylark
- 1990 Buick Skylark sedan
Discontinued
- 1989 Buick Electra Estate Wagon
- 1989 Buick Skyhawk
- 1989 Buick Skyhawk coupe
- 1989 Buick Skyhawk wagon