Cadillac Seville History 1999

Cadillac Seville Models & History 1999

The Seville, coming off a major redesign the previous year, returned with its two sedan line-up: Seville Luxury Sedan (SLS) and Seville Touring Sedan (STS). The car is three inches shorter than the old model and has a two-inch (5 cm) wider stance to enhance ride and handling. There is an extra 1.7 inches (4 cm) of headroom in the new model, and slightly more shoulder room. However, due to the shorter body length, there is a slight loss of rear leg room. The optional adaptive seating system detects pressure points and adjusts 10 strategically placed air cells in the seat cushion.

The Bose 4.0 sound system puts out nearly 425 watts of music power through its eight speakers, which include a 12-inch subwoofer. The Bose system is smart enough to automatically adjust volume and tone levels to compensate for changing cabin sound conditions.

Cadillac’s 4-speed automatic transmission features a Performance Shift Algorithm that analyzes your driving and adjusts the shifting appropriately. Hit the throttle hard and it duplicates the crisp shifts of a manual transmission. Accelerate gradually and the transmission shifts smoothly. Go through a corner under hard acceleration and the system is smart enough to delay shifting until you are through the turn, which improves handling balance.

For increased active safety, the Continuously Variable Road Sensing Suspension responds to changing road conditions to optimize ride and handling; it alters shock damping rates to find an optimal balance between comfort and handling.

Other distinctive features:

  • Computer-controlled adaptive seating system
  • Stabili-Trak system which responds to a skid before driver is aware there is a problem.
  • Wrap-around projector headlights
  • Three-dimensional Vacuum Fluorescent (VF) display gauges
  • Richly grained zebrano wood
  • Plush seats with lateral support
  • OnStar communication system linked to a Global Positioning Satellite (GPS) receiver
  • Dual front and side-impact airbags
  • Proven Northstar 4.5-liter V8 engine
  • The STS offered the innovative massaging lumbar seats as optional equipment.


Feature Seville SLS Seville STC
Type 90-degree dual overhead cam Northstar V-8
Valving Four valves per cylinder (32 total)
Block Aluminum block with cast iron cylinder liners
Heads aluminum
Displacement 4.565 liters
Bore & Stroke 93mm x 84mm
Compression ratio 10.3:1
Power 205 kW @ 5600 rpm 224 kW @ 6000 rpm
Torque 407 Nm @ 4000 rpm 400 Nm @ 4400 rpm
Tappets Direct acting hydraulic tappets.
Fuel supply Tuned port multi-point fuel injection.
Fuel type Premium Unleaded
Fuel economy EPA city 17 mpg (13.8 l/100km)
Fuel economy EPA highway 26 mpg (9 l/100km)


Feature Dimension
Layout Front-wheel drive
Wheelbase 112.2 in. (285 cm)
Overall Length 201.0 in. (510.5cm)
Height 55.4 in. (140.7 cm)
Width 75.0 in. (190.5 cm)
Front Tread 62.7 in. (159 cm)
Rear Tread 62.3 in. (158 cm)
Front Suspension Independent
Rear Suspension Independent
Tires Goodyear Eagle LS P235/60HR16
Turning Radius 40.5 ft (12.3 m)
Brakes (front/rear) disc/disc
Ground Clearance 5.4 in. (13.7 cm)
Curb Weight 3970 lb (1805 kg)
Towing Capacity 3000 lb. (1364 kg)


Seating Capacity 5
Front Head Room 38.2 in. (97 cm)
Front Hip Room 55.6 in. (141 cm)
Front Leg Room 42.5 in. (108 cm)
Rear Head Room 38.0 in. (97 cm)
Rear Hip Room 57.5 in. (146 cm)
Rear Leg Room 38.2 in. (97 cm)
Trunk Volume 15.7 cu. ft. (445 liters)


Transmission 4T80-E electronically controlled four-speed automatic (includes viscous converter clutch)
Steering Power-assisted rack-and-pinion, Magnasteer
Front Suspension Independent MacPherson strut with coil springs, stabilizer bar and electronic continuously variable road sensing suspension.
Rear Suspension Independent multi-link, aluminum control arms, lateral toe links, coil springs, stabilizer bar w/automatic level control and electronic continuously variable rood sensing suspension.
Brakes power front and rear disc w/four-channel anti-lock braking system and StabiliTrak
Body Construction Integral body-frame.
Fuel Tank 18.5 US gal. (70 liters)


1SB Convenience Pkg. $596
1SC Personalization Pkg. $1,698.
Wood Trim Pkg, $495
Accent Striping (SLS) $75
Heated Seats Pkg. (STS) $632
Adaptive Seat Pkg. (STS) $1202.
Express Open Sunroof $1,550
Eng, block Heater $18.
white Diamond Paint $500.
Crimson Pearl Paint $500
Console Mounted 6-Disc CD Changer $500.
Bose High-Perf. Entertainment Syst. (SLS) $1,250
Bose High-Perf. Entertainment Syst. (STS) $300.
Trunk Storage Syst. $265.
P235/60ZR16 BSW Tires (STS) $250.
Chrome wheels $795


  • Chief Designer: Dennis Little
  • Assembled In Detroit, Michigan
  • SLS Price: $44,000
  • STS Price: $48,000