Cadillac offered five series this year: Catera, DeVille, Eldorado, Seville, and Escalade. The DeVille featured three models: 4-door Sedan, d'Elegance Sedan, and Concours Sedan. The Eldorado featured two models: 2-door Coupe and an all new 1999 2-door Touring Coupe. The Seville featured two models: SLS Sedan and STS Sedan.
The Catera gained an optional Sport Package model. The big news for Cadillac was the Escalade -- the first truck-based vehicle in Cadillac's history. New optional equipment for 1999 included the innovative massaging lumbar seat to provide maximum driver comfort.
| Model | Series Prod. No. | Body Style No. | Body Type | Factory Price | Shipping weight |
| Catera | VR5 | R69 | 4-door Sedan | 31775 | 3770 |
| DeVille | KD5 | D69 | 4-door Sedan | 38630 | 3978 |
| KE5 | E69 | 4-door d'Elegance Sedan | 42730 | 4049 | |
| KF5 | F69 | 4-door Concours Sedan | 43230 | 4047 | |
| Eldorado | EL1 | L57 | 2-door Coupe | 39235 | 3825 |
| ET1 | T57 | 2-door Touring Coupe | 43495 | 3856 | |
| Seville | KS5 | S69 | 4-door SLS Sedan | 43355 | 3976 |
| KY5 | Y69 | 4-door STS Sedan | 47850 | 4001 |
| The 1999 Cadillac had a 17-symbol vehicle identification number (VIN) stamped on a metal tag attached to the upper left surface of the cowl visible through the windshield. The code was as follows: | ||
| POSITION | DIGIT | MEANING |
| 1 | 1 or 4 | manufacturing country (United States) |
| 2 | G | General Motors |
| 3 | 6 | Cadillac |
| 4 & 5 | car line series |
|
| 6 | the body style: |
|
| 7 | the restraint code |
|
| 8 | the engine |
|
| 9 | check digit | - |
| 10 | model year | X = 1999 |
| 11 | the assembly plant | - |
| 12-17 | the production sequence number | - |
1999 Cadillac Notes
1999 Automotive Notes