Like the Eldorado, the 1988 Seville had a new look from the windshield forward. It also shared the Eldorado's new choice of colors and interior revisions along with its design and engineering advances. Newly available for the Seville was the electronically controlled Taves anti-lock braking system. The Seville's suspension was refined for 1988 to improve the ride characteristics of the base-suspension models. The touring suspension was also returned for improved roadability. Among the detail changes for 1988 shared by the Seville and Eldorado was a more reliable control unit for the electric engine cooling fan.
| Model | Series Number | Body/Style Number | Body Type | Seating | Factory Price | Shipping Weight | Production Total |
| Seville | 6K | S69 | 4-door Sedan | 6 | $27,627 | 3449 lb | 22,968 |