2009 Cadillac STS-V Specifications

Engines

Transmissions

3.6L V-6 VVT DI

4.6L Northstar V-8 VVT

4.4L V-8 Northstar SC

Hydra-Matic 6L50 6-spd.

Hydra-Matic 6L80 6-spd.

STS V-6 RWD

s

_

_

s

STS V-6 AWD

s

_

_

s

–

STS V-8 RWD

s

_

s

–

STS V-8 AWD

s

–

s

_

STS-V (RWD only)

–

–

s

–

s

Standard

s

Optional

o

Not Available

–

Model:

Cadillac STS V-6, STS V-8 and STS-V luxury performance sedans

Body style / driveline:

STS V-6 and V-8: luxury 4-door performance sedan with rear-wheel drive or all-wheel drive
STS-V: luxury 4-door high-performance sedan with rear-wheel drive

Construction:

unitized welded steel body with direct-mounted front cradle and rubber-isolated, multi-link independent rear suspension assembly

Manufacturing location:

Lansing Grand River Assembly, Lansing, Mich.

Key competitors:

STS V-6, V-8: BMW 5 & 7-Series, Mercedes Benz E-Class, Lexus GS/LS 430, Audi A6, Jaguar S-Type
STS-V: BMW M5, Mercedes Benz AMG E55

3.6L V-6 VVT DI

4.6LNorthstar V-8 VVT

4.4L Northstar DOHC V-8 SC

Application:

std. STS V-6

opt STS

std. STS-V

Displacement (cu in / cc):

217 / 3564

279 / 4565

267 / 4371

Bore & stroke (in / mm):

3.70 x 3.37 / 94 x 85

3.66 x 3.30 / 93 x 84

3.58 x 3.30 / 91 x 84

Block material:

cast aluminum

cast aluminum

upper: sand-cast 319 T7 aluminum; lower: die-cast aluminum

Cylinder head material:

semi-permanent mold aluminum

semi-permanent mold aluminum

319 T7 semi-permanent mold cast aluminum alloy

Valvetrain:

dual-overhead camshafts, 4 valves per cylinder, continuously variable valve timing

dual-overhead camshafts, 4 valves per cylinder, continuously variable valve timing

roller follower DOHC, 4 valves per cylinder, variable valve timing

Ignition system:

coil-on-plug with extended-life dual platinum-tipped spark plugs

coil-on-plug with extended-life dual platinum-tipped spark plugs

coil-on-plug with extended-life dual platinum-tipped spark plugs

Fuel delivery:

direct injection

returnless sequential fuel injection

returnless, electronic sequential fuel injection; supercharged

Compression ratio:

11.3:1

10.5:1

9.0:1

Horsepower (hp / @ rpm):

302 / 225 @ 6300*

320 / 239 @ 6400

469 / 349 @ 6400*

Torque (lb-ft / Nm @ rpm):

272 / 369 @ 5200*

315 / 427 @ 4400

439 / 595 @ 3900 *

Recommended fuel:

regular unleaded

premium recommended but not required

premium required

Maximum engine speed:

6700

6750

6700

Emissions controls:

evaporative system, close-coupled catalytic converters, positive crankcase ventilation, inlet and exhaust cam phasers, electronic throttle control, feedback air-fuel-ratio control

evaporative system, close-coupled catalytic converters, positive crankcase ventilation, inlet and exhaust cam phasers, electronic throttle control, feedback air-fuel-ratio control

BIN8/EURO 4 compliant; close-coupled catalytic converters – EGR and AIR not required;

meets Federal, California, and LEV2 evaporative emissions standards

EPA estimated fuel economy (city / hwy):

17 / 26 (RWD)
17 / 26 (AWD)

15 / 24 (RWD)
14 / 21 (AWD)

13 / 19

Hydra-Matic 6L50 (V-6 and 4.6L V-8)

Hydra-Matic 6L80 (V-8 SC)

Type:

6-speed electronically controlled automatic with lockup torque converter, clutch to clutch architecture, integral electro/hydraulic control module, Driver Shift Control, and performance algorithm liftfoot

6-speed, rear-wheel drive, electronically controlled, automatic overdrive with torque converter clutch; clutch-to-clutch architecture with integral electro/hydraulic control module, Driver Shift control

Gear ratios (:1):

First:

4.06

4.03

Second:

2.37

2.36

Third:

1.55

1.53

Fourth:

1.15

1.15

Fifth:

0.85

0.85

Sixth:

0.67

0.67

Reverse:

3.20

3.06

Final drive ratio:

RWD: 3.42
AWD: 3.23

3.23

Standard/Luxury Package

Performance Handling Package

STS-V

Availability:

std on V-6

std on V-8, opt on V-6

std on STS-V

Front:

independent, short/long arm, coil-over shock, anti-roll bar

independent, short/long arm, coil-over shock, anti-roll bar

Independent short/long arm, coil-over performance tuned monotube shocks, anti-roll bar

Rear:

independent, modified multi-link, coil springs, automatic load leveling shock absorbers, anti-roll bar

independent, modified multi-link, coil springs, magnetic ride control, pneumatic load leveling, anti-roll bar

independent, modified multi-link, coil springs, Nivomat performance-tuned load-leveling shocks, anti-roll bar

Traction control system:

full-range

full-range

full-range

Stabilizer bar:
Front:

hollow, 33-mm diameter

hollow, 33-mm diameter

hollow, 36-mm diameter

Rear:

RWD: hollow, 17-mm diameter
AWD: hollow, 24-mm diameter

RWD: hollow, 19-mm diameter
AWD: hollow, 24-mm diameter

hollow: 24-mm diameter

Steering type:

power-assisted rack and pinion; ZF Servotronic II variable assist system available

power-assisted rack and pinion; ZF Servotronic II variable assist system available

power-assisted rack and pinion; ZF Servotronic II variable assist system

Steering ratio:

18.2:1, variable ratio

18.2:1, variable ratio

17.2:1, variable ratio

Steering wheel turns, lock-to-lock:

3

3

2.85

Turning circle, curb-to-curb (ft / m):

V-6 w/17-inch tires: 36.9 / 11.5
V-6 w/18-inch tires: 38.8 / 11.82

V-8 w/17-inch tires: 37.7 / 11.5
V-8 w/18-inch tires: 38.8 / 11.82

38.8 / 11.82

Luxury / Performance Package

Performance Handling Package

STS-V

Availability:

std on V-6

std on V-8, opt. on V-6

std on STS-V

Type:

power-assist – vacuum with anti-lock control, traction control and StabiliTrak

Brembo 4-wheel ABS, 4-piston front and rear calipers and performance brake linings, std. StabiliTrak with opt. active front steering (V-8 RWD only)

Brembo high-performance 4-wheel, 4-piston calipers; power-assist – vacuum with anti-lock control, traction control, StabiliTrak

Rotor diameter x thickness
(in / mm):

front: 11.9 x 1.3 / 303 x 32 vented disc
rear: 11.7 x 1.0 / 298 x 26 vented disc

front: 13.97 x 1.25 / 355 x 32 vented disc
rear: 14.37 x 1.10 / 365 x 28 vented disc

front: 13.97 x 1.25 /355 x 32 vented disc
rear: 14.37 x 1.1 / 365 x 28 vented disc

Luxury / Performance Package

Performance Handling Package

STS-V

Availability:

std on V-6

std on V-8, opt on V-6

std on STS-V

Wheel size and type:

17 x 7-inch cast aluminum (std) or 18 x 8-inch 14-spoke polished aluminum alloy

17 x 7.5 / 8-inch (split size) aluminum or 18 x 8.5-inch chrome-plated aluminum alloy

front: 18 x 8.5-inch aluminum alloy six-lug

rear: 19 x 9.5-inch aluminum alloy six-lug

Tires:

Michelin V-rated, 235/50R17 & 255/45R17 or Michelin ALS 235/50R17

Michelin V-rated, 235/50R17 & 255/45R17 or Michelin W-rated, 235/50R18 & 255/45R18 or Michelin Pilot Sport, 255/45R18 summer only

front: P255/45R18 Extended Mobility – Pirelli
rear: P275/40R19 Extended Mobility – Pirelli

Exterior

Wheelbase (in / mm):

116.4 / 2956

Overall length (in / mm):

STS V-6 and V-8: 196.3 / 4986
STS-V: 197.6 / 5018.7

Overall width (in / mm):

72.6 / 1844

Overall height (in / mm):

STS V-6 and V-8: 57.6 / 1463
STS-V: 58.2 / 1477.4

Track (in / mm):

STS V-6 and V-8 front: 61.8 / 1569
STS V-6 and V-8 rear: 62.3 / 1581
STS-V front: 66.0 / 1677.4
STS-V rear: 61.9 / 1571.5

Curb weight (lb / kg):

3.6L automatic: 3857 / 1750
3.6L automatic w/ AWD: 3660 / 1795
4.6L automatic: 3921 / 1779
4.6L automatic w/ AWD: 4230 / 1919
4.4L automatic: 4294 / 1948

Weight distribution
(% front / rear):

V-6: 52 / 48
V-8: 54 / 46

Interior

Headroom (in / mm):

front: 38.7 / 983
rear: 37.9 / 962

Legroom (in / mm):

front: 42.6 / 1082
rear: 38.3 / 972

Shoulder room (in / mm):

front: 58.6 / 1488
rear: 57.4 / 1458

Hip room (in / mm):

front: 54.6 / 1387
rear: 55.6 / 1412

EPA total volume (cu ft):

116.7

EPA trunk volume (cu ft):

13.8

Trailer towing maximum (lb / kg):

1000 / 454

Fuel tank (gal / L):

17.5 / 66.2

Engine oil (qt / L):

3.6L: 6 / 5.6
4.4L: 8 / 7.5
4.6L: 8 / 7.5

Cooling system (qt / L):

10.9 / 10.3

Seating capacity (front / rear):

2 / 3