V-6

V-8

 BODY

Construction

Steel body on fully boxed frame

Steel body on fully boxed frame

Final Assembly Location

Louisville , Ky.
St. Louis, Mo.

Louisville , Ky.
St. Louis, Mo.

ENGINE

Type

Cast iron block and aluminum head

Cast iron block and aluminum heads

Manufacturing Location

Cologne, Germany

Romeo, Michigan

Configuration

V-6

V-8

Intake Manifold

Composite, shell welded with internal runner pack

Composite shell-welded single runner, charge motion control valves

Exhaust Manifold

Cast iron

Cast iron

Crankshaft

Cast iron

Cast iron

Redline

6,000 rpm

6,250 rpm

Idle Speed in Drive

625 rpm

635 rpm

Throttle Body

65 mm

75 mm

Valvetrain

SOHC, 2 valves per cylinder

SOHC, 3 valves per cylinder, variable camshaft timing

Valve Diameter

Intake: 46.0 mm

Intake: 33.8 mm

Exhaust: 39.0 mm

Exhaust: 37.5 mm

Pistons

Hypereutectic aluminum

Hypereutectic aluminum

Connecting Rods

Forged steel

Cracked powdered metal with floating wristpins

Ignition

Distributorless with coil pack

Coil-on-plug, high-thread-insert spark plugs

Bore x stroke

3.95 x 3.32 in. / 100.4 x 84.4 mm

3.55 x 3.54 in. / 90.2 x 90.0 mm

Displacement

245 cu. in. / 4,009 cc

281 cu. in. / 4,606 cc

Compression ratio

9.7:1

9.8:1

Horsepower

210 @ 5,100 rpm

292 @ 5700 rpm

Horsepower per liter

52.5

63.5

Torque

254 lb.-ft. @ 3,700 rpm

315 lb.-ft. @ 4000 rpm

Recommended fuel

87 Octane

87 Octane

Fuel capacity

22.5 Gallons

22.5 Gallons

Fuel Injection

Sequential multi-port fuel injection

Sequential multi-port fuel injection

Emission Control

Closed loop with catalyst

Closed loop with catalyst

Emissions (tailpipe/evaporation)

Tier II, Bin 4 / ULEV II

Tier II, Bin 5 / LEV II

Oil Capacity

5 quarts with filter

6 quarts with filter

Recommended Oil

GF-4, 5W-30

GF-4, 5W-20

Coolant Capacity

12.5 quarts

12.7 quarts

DRIVETRAIN

Layout

Rear- or four-wheel drive

Rear- or four-wheel drive

TRANSMISSION

Standard

5-speed automatic overdrive

6-speed automatic overdrive

Gear Ratios

1st

3.22:1

4.17:1

2nd

2.29:1

2.34:1

3rd

1.54:1

1.52:1

4th

1.00:1

1.14:1

5th

0.71:1

0.86:1

6th

N/A

0.69:1

REV

3.07:1

3.40:1

Final Drive

0.71:1

0.69:1

REAR AXLE RATIO

Standard

3.55

3.55

Optional

3.73

NA

SUSPENSION

Front

Independent short- and long-arm (SLA) architecture with coil-over shocks; 32-mm stabilizer bar

Rear

Independent Trailing Blade short- and long-arm (SLA) architecture with coil-over shocks; 25-mm stabilizer bar

STEERING

Type

Low-friction rack and pinion with power assist

Steering column

Tilt

Ratio

18.9:1

Turns lock-to-lock

3.6 turns

Turning circle curb-to-curb

36.8 ft

FUEL ECONOMY (city/hwy)

4x2 4.0-liter V-6
5-speed automatic

2009 MY figures N/A

4x2 4.0-liter V-8
6-speed automatic

2009 MY figures N/A

4x4 4.0-liter V-6
5-speed automatic

2009 MY figures N/A

4x4 4.6-liter V-8
6-speed automatic

2009 MY figures N/A

BRAKES

Type

Four wheel power disc brakes with standard 4 sensor, 4 channel anti lock braking system (ABS) and AdvanceTrac® with RSC® (Roll Stability Control)

Front

305 x 30 mm ventilated

Swept area

780 cm 2

Rear

301 x 12 mm solid

Swept area

608 cm²

Power assist

Vacuum

TIRES AND WHEELS

P235/70R16 A/S OWL tires/ 16 x 7.0 inch painted aluminum wheels
P245/65R17 A/S  OWL tires/ 17 x 7.5 inch painted aluminum wheels
P245/65R17 A/T OWL tires/ 17 x 7.5 inch machined aluminum wheels
P235/65R18 A/S OWL tires/ 18 x 7.5 inch chrome-clad aluminum wheels
P255/50R20 A/S BSW tires/ 20 x 8.0 inch polished aluminum wheels 

EXTERIOR  (inches unless otherwise noted)

Wheelbase

113.7

Vehicle length

193.4

Vehicle width     
  (excluding mirrors)

73.7

Vehicle height
  (with options)

72.8

Track, front/rear

60.9 / 61.8

Minimum running ground clearance

 8.7

Approach angle

28.2o

Departure angle

23.8o

Ramp breakover angle

18.4o

INTERIOR (inches unless otherwise noted)

Seating capacity

5, 6 or 7 passenger

Headroom

Front row

39.8

Second row

38.7

Third row

37.4

Legroom

Front row

42.4

Second row

36.9

Third row

34.9

Shoulder room

Front row

59

Second row

58.9

Third row

53.1

Hip room

Front row

55.4

Second row

55.5

Third row

45.3

Cargo Volume

5 Passenger

7 Passenger

Behind First Row

85.8 cu. ft.

83.7 cu. ft.

Behind Second Row

45.1 cu. ft.

43.9 cu. ft.

Behind Third Row

  -

13.6 cu. ft.

Maximum towing capacity
(when properly equipped)

V-6  (lbs.)

V-8  (lbs.)

4X2, 5-Passenger

5,375

7,285

4X4, AWD 5-Passenger

5,205

7,115

4X2, 6-Passenger

5,315

7,225

4X4, AWD 6-Passenger

5,140

7,050

4X2, 7-Passenger

5,290

7,200

4X4, AWD 7-Passenger

5,115

7,025

Maximum payload

4X2, 5-Passenger

1,500

1,500

4X4, AWD 5-Passenger

1,500

1,500

4X2, 6-Passenger

1,450

1,450

4X4, AWD 6-Passenger

1,440

1,440

4X2, 7-Passenger

1,430

1,430

4X4, AWD 7-Passenger

1,420

1,420

Base curb weight

4X2, 5-Passenger

4,455

4,526

4X4, AWD 5-Passenger

4,628

4,719

4X2, 6-Passenger

4,519

4,609

4X4, AWD 6-Passenger

4,691

4,782

4X2, 7-Passenger

4,544

4,634

4X4, AWD 7-Passenger

4,716

4,807

Weight distribution (f/r)

4x2: 53/47

4x2: 53/47

4x4: 54/46

4x4: 54/46

Power-to-weight ratio (lbs/hp)

4x2: 0.0473

4x2: 0.0644

4x4: 0.0455

4x4: 0.0620