2008 CHEVROLET IMPALA: STABILITRAK STABILITY CONTROL AND ADDITIONAL E85 FLEXFUEL POWERTRAIN HIGHLIGHT '08 MODEL YEAR
The Canadian-made Chevy Impala was one of Canada's top 10 vehicles in sales during the 2006 model year. The Impala's combination of chiseled style, generous room, sporty driving characteristics and value answers the needs of a broad range of drivers.
The 2008 Impala reinforces the brand's value story with new features and revisions that add to its safety and efficiency, including the addition of standard StabiliTrak electronic stability control on LTZ and SS models; and the addition of E85 FlexFuel capability to the 3.9L and 3.5L V-6 engines.
This marks the second engine in the Impala lineup to offer E85 capability; the 3.5L V-6 also is offered in a FlexFuel configuration. In fact, fuel-saving and FlexFuel powertrains are found in all Impala models:
- The 3.9L V-6 that is standard on LTZ is equipped with standard E85 FlexFuel capability and Active Fuel Management
- The 5.3L V-8 of the Impala SS comes with standard Active Fuel Management
Active Fuel Management is a fuel-saving technology that shuts off half the engine's cylinders when full power is not needed. It can improve fuel economy by up to 8 percent in certain driving situations.
New and revised features for '08
Impala's standard and available safety features include ABS, traction control and side-curtain roof rail air bags. StabiliTrak electronic stability control is new for '08 and is standard on LTZ and SS models.
Additional new features and revisions for '08 Impala include:
- Optional 18-inch chrome aluminum wheels on Impala SS
- 18-inch machined aluminum flangeless wheels on LTZ
- 17-inch alloy wheels on LT models
- Performance-oriented FE3 suspension is standard on LTZ
- Three exterior colours: Gold Mist Metallic, Mocha Bronze Metallic and Slate Metallic
Impala design
Chevy Impala conveys sophistication and exudes big-car roominess. On the exterior, large headlamps have a premium, jewelled appearance with three independent lighting units. These details complement other high-quality attributes, such as tight tolerances of 3.5 mm or less between body components and substantial "grab"-style door handles, to provide an overall feeling of solidity. Also, new, flat-blade windshield wipers are used to provide consistent pressure on the glass, which helps eliminate streaking and wind noise.
The Impala LS, LT and LTZ models have varied exterior trim cues that identify each model, while the Impala SS receives a distinct front-end appearance that is separate from other models. It includes a dual-split grille with a SS-signature black-diamond crosshatch pattern. At the rear, a rear spoiler is standard on LTZ and SS models and is available on LS and LT. The Impala SS also receives Corvette-inspired bright exhaust tips.
Inside, Impala is packed with thoughtful features, including clever flip-and-fold rear seats (standard on LTZ and SS, available on LS & LT). The forward-flip rear seat cushions reveal a storage tub under the seat that can contain spillage while transporting a variety of items. The tub also serves as a covered storage area beneath the seat with cushions down and offer convenient grocery bag hooks when the cushions are flipped forward. A generous pass-through from the trunk can be created by flipping the seat bottoms forward and the seat backs flat - an exclusive feature in the midsize segment.
All of Impala's available seating features cleaner, simpler and more tailored appearances. Uplevel Nuance leather-appointed seating features premium deck seams around their perimeter and French seams on the centre cushions. The seats also have firmer cushions and increased lumbar support that provide more comfort, especially during long drives. The driver's seat also includes adjustable lumbar.
The Impala's instrument panel wraps around into the door panels and has a double-hump design that is reminiscent of early Corvettes. Impala LS, LT and LTZ models have a wood-trimmed appearance, while a sportier, brushed sterling-appearance trim is available. The Impala SS comes standard with a "technical"-pattern trim panel.
Completing the Impala's comprehensive interior is a host of useful comfort and convenience features, including:
- Available dual-zone climate control system with up to an 11-C temperature setting difference between the two front zones
- Available factory-installed remote vehicle start system with a 61-metre (200-foot) range and automatic climate pre-conditioning to warm or cool the vehicle prior to entry
- Informative gauge clusters and an expanded driver information centre - with more than 50 alerts, depending on the vehicle's equipment
- Standard easy-access, steering wheel-mounted cruise control buttons
- Steering wheel radio controls on uplevel models
- Eight-way, heated power driver seat standard on LTZ and SS leather-appointed seats; six-way power driver seat standard on LS, LT with cloth seats
- New 7.0 Generation OnStar system offers Turn-by-Turn navigation.
Three audio systems feature simple-to-operate radios that are compatible with the enhanced OnStar system. The base CD-radio includes a six-speaker system. An uplevel MP3/CD-radio features a two-line, 32-character reconfigurable display and the capability to select between AM, FM and XM stations (if equipped) without having to reset the frequency. An uplevel ICDX radio adds an in-dash six-CD changer. Impala also offers a premium Bose audio system. All radios include a standard auxiliary input jack for external devices such as an iPod or remote cassette player. Located in the lower right-hand corner of each radio, the input allows for plug-and-play through Impala's sound system.
Chassis and suspension
Quiet, smoothness and refinement are the ride and handling traits conveyed through the Impala's chassis and suspension systems. A robust front-end structure provides a firmer foundation to help reduce noise, vibration and harshness (NVH), while also enhancing steering and handling performance.
Impala's fully boxed upper frame rail assemblies have a wider, deeper and structurally stronger upper front tie bar, with slight machining differences between V-6 and V-8 models to provide room for the 5.3L small-block V-8 engine. Stronger ties between the upper and lower rails stiffen the front structure for improved ride and handling and a large, lower front-of-dash panel has been strengthened. It is constructed of Quiet Steel laminated steel, which consists of sound deadening material bonded between sheets of steel and reduces resonant sound.
An extruded aluminum engine cradle is used on both vehicles, too, and contributes to a smoother, vibration-free ride. The cradle's lateral stiffness (at the steering joint) is increased with a new, one-piece machined rear cross member and new aluminum rear body mounts, which helps improve handling control. Models equipped with a V-6 engine have a two-point engine-mounting system, while V-8 models have a three-point mounting system.
A power rack-and-pinion steering system is standard on all models, with entry-level LS model now sharing the same, responsive 13.3:1 steering ratio of LT, LTZ and SS models. All models feature a quiet, efficient power steering system that optimizes internal flow of the hydraulic steering fluid within the pump and reservoirs.
The front suspension features a MacPherson strut coil-over-spring independent setup with gas-charged struts and a stabilizer bar. Tall jounce bumpers in the front suspension help enhance stability and control. The rear suspension uses a trailing arm, tri-link setup with gas-charged struts and coil springs. A rear stabilizer bar is standard on all models. Based on the basic front and rear suspension designs, the Impala offers two levels of suspension tuning - FE1 and FE3 - each matched to the power and expected performance level of its respective model:
FE1 (LS and LT): The FE1 suspension provides great control without compromising ride quality. It uses stiff, constant-rate front springs and variable-rate rear springs to provide higher roll rates and, at the front, a stiffer torque strut design reduces NVH and helps provide a smoother, quieter ride. The packages include 16-inch wheels and P225/60R16 ALS (all-season) Goodyear Integrity radials.
FE3 (LTZ and SS): Impala LTZ and SS models receive a FE3 suspension, which includes 18-inch W-rated P235/50R18 AL3 (performance) tires and five-spoke alloy wheels. A 34-mm hollow front stabilizer bar and 18-mm solid rear stabilizer bar combine to provide more roll control than the FE1 suspension. Also, increased stiffness helps reduce body lean and contributes to greater high-speed stability.
Powertrain details
Impala's V-6 engines are as fuel-efficient as they are sophisticated. A 3.5L V-6 is standard in the Impala LS and LT, delivering 211 horsepower (157 kW)* and 214 lb.-ft. (290 Nm)* of torque - more standard power as a base engine than some key competitors' top (or only) offering.
Standard in LTZ is the 3.9L V-6 that features E85 FlexFuel capability and Active Fuel Management. The 3.9L uses variable valve timing and a variable-length intake manifold to help produce 233 horsepower (178 kW)* and 240 lb.-ft. (328 Nm) of torque.* This engine offers more power and usable torque within its operating range, with 90 percent of peak torque available from 1800 to 5800 rpm.
The 5.3L all-aluminum small-block V-8 powers the performance-oriented Impala SS. It features Active Fuel Management, which can provide up to 8 percent better fuel economy. Developed exclusively for front-drive applications, the SS's 5.3L engine produces 303 horsepower (226 kW)* and 323 lb.-ft. (438 Nm)* of torque.
All of Impala's engines are matched with the Hydra-Matic 4T65 electronically controlled four-speed automatic transmission, which is renowned for its smoothness and durability. A strengthened version is equipped with the 5.3L engine to handle the V-8's torque.
Safety and crash avoidance
Impala offers standard side-curtain air bags, which provide optimum head protection for outboard passengers. The side curtain air bags are mounted in the side roof rails and deploy down to the lower edge of the windows from the A-pillar to the C-pillar. Impala's other safety features include:
- StabiliTrak electronic stability control system is new for 2008; it is standard on LTZ and SS models
- Four-wheel-disc brake system featuring smooth, quiet operation, longer pad life, and more resistance to brake pulsation
- ABS system, standard on all models, helps provide improved steering control while braking. It also includes Electronic Brake Force Distribution, which helps provide optimum braking regardless of load, traction or braking speed
- Standard engine- and brake-managed full-function traction control system works with the ABS system to help ensure stable acceleration on a variety of road conditions
- Pretensioners are standard on the front safety belts, helping to minimize forward movement during a frontal collision and new, more effective load-limiting retractors. The retractors have more "take-up" force, cinching the belt more tightly. Three-point safety belts are equipped in all standard seating positions
- LATCH (Lower Anchors & Tethers for CHildren) child seat attachment system is included in all second row seating positions
- Tire Pressure Monitoring System is standard on all models
- Standard remote keyless entry (RKE) system provides a second function for the red panic button. Drivers can use the button to locate their cars, without sounding the panic alarm.
The Impala includes features designed to enhance the vehicle structure, including lighter, more rigid front and rear bumper systems. Also, the Impala features a strengthened "safety cage" passenger compartment with the front and rear doors designed for improved energy dissipation in the event of a crash.
The OnStar system is standard on Impala. Its hardware also includes upgraded hands-free voice recognition capabilities, including more intuitive continuous digit dialing and improved voice recognition accuracy. OnStar is the leading provider of in-vehicle safety, security and information services in Canada and the United States Using the GPS satellite network and wireless technology, OnStar features core safety services and OnStar Personal Calling that allows drivers to make and receive hands-free, voice-activated phone calls using a powerful 3-watt digital system and external antenna for greater reception.
The OnStar service available on the 2008 Impala includes the General Motors Advanced Automatic Crash Notification (AACN) system, making crash data available to 911 centers to potentially dispatch the appropriate life-saving personnel and equipment to crash scenes faster.
The Gen 7 OnStar system offers Turn-by-Turn navigation with the optional Directions and Connections service. Turn-by-Turn navigation directs the driver through the route by using the digital readout lines in the radio head. Directions are downloaded by the OnStar advisor to the vehicle and can be played back or paused through the drive up to the destination. Besides being an easy to use system (all directions are downloaded to the car by an advisor) Turn-by-Turn offers an affordable system that is always up to date.
*SAE certified.
# # #
Contacts:
GM
of Canada Communications
Tony LaRocca
Phone: 905-644-1804
Fax: 905-644-3873
E-mail: tony.larocca@gm.com
STANDARD
AND OPTIONAL FEATURES
EXTERIOR FEATURES |
LS |
LT |
LT 50th |
LTZ |
SS |
Badging - 50th Anniversary badging on "C" pillar and front sill plates |
- |
- |
S |
- |
- |
Badging - "SS" badging on front doors and deck lid (also on horn pad and front head restraints) |
- |
- |
- |
- |
S |
Fog lights - projector beam |
- |
- |
- |
S |
S |
Glass - Solar-Ray, tinted |
S |
S |
S |
S |
S |
Grille - chrome surround |
S |
S |
S |
S |
- |
Grille - "SS" specific with chrome surround |
- |
- |
- |
- |
S |
Mirrors - power remote control |
S |
S |
S |
- |
S |
Mirrors - power remote control, heated (included with Mirror Package) |
- |
- |
- |
S |
O |
Mouldings - rocker, body-colour |
S |
S |
- |
S |
S |
Mouldings - rocker, body-colour, 50th Anniversary unique |
- |
- |
S |
- |
- |
Mouldings - bodyside, body-colour |
O |
O |
O |
O |
O |
Spoiler - rear deck-lid |
O |
O |
S |
S |
S |
Sunroof - power, sliding glass panel with sunshade (includes universal home remote 3-channel transmitter) |
O |
O |
O |
O |
O |
Tires - P225/60R16 all-season |
S |
- |
- |
- |
- |
Tires - P225/55R17 all-season |
- |
S |
- |
- |
- |
Tires - P235/50R18 all-season |
- |
- |
S |
S |
S |
Wheels - 16" x 6.5" steel with bolt-on wheel covers |
S |
- |
- |
- |
- |
Wheels - 17" x 6.5" machine faced aluminum |
- |
S |
- |
- |
- |
Wheels - 18" x 7" machine faced aluminum, flangeless |
- |
- |
S |
- |
- |
Wheels - 18" x 7" multi-spoke aluminum |
- |
- |
- |
S |
- |
Wheels - 18" x 7" flangeless polished aluminum |
- |
- |
- |
- |
S |
Windshield wipers - flat-blade, 2-speed with variable delay (intermittent) |
S |
S |
S |
S |
S |
LS Sport Package - includes flip-and-fold-flat rear seat, 16" x 6.5" 5-spoke painted aluminum wheel and rear deck-lid spoiler |
O |
- |
- |
- |
- |
INTERIOR FEATURES |
LS |
LT |
LT 50th |
LTZ |
SS |
Accents - simulated walnut burl |
S |
S |
- |
S |
- |
Accents - brushed metallic |
O |
O |
S |
O |
- |
Accents - techno steel |
- |
- |
- |
- |
S |
Air conditioning - manual, single zone |
S |
- |
- |
- |
- |
Air conditioning - manual, dual zone |
- |
S |
S |
S |
S |
Air filtration system - pollen filter |
S |
S |
S |
S |
S |
Cargo convenience net |
S |
S |
S |
S |
S |
Cruise control - steering wheel-mounted, electronic with resume, coast and decelerate/accelerate features |
S |
S |
S |
S |
S |
Defogger - electric rear-window |
S |
S |
S |
S |
S |
Floor mats - front and rear, carpeted |
S |
S |
- |
S |
S |
Floor mats - unique Ebony with accent serging thread; includes Ebony carpets |
- |
- |
S |
- |
- |
Heater ducts - rear seat, floor |
S |
S |
S |
S |
S |
Instrumentation - analogue gauges (includes speedometer, tachometer, coolant temperature and fuel gauges) and Driver Information Centre (includes system problem notification, low oil pressure, GM Oil Life Monitoring System, low fuel level, low washer fluid level and trunk open indicators) |
S |
- |
- |
- |
- |
Instrumentation - Deluxe Driver Information Centre (includes exterior temperature and compass display) |
O |
S |
S |
S |
S |
Instrumentation - tire pressure monitoring system |
S |
S |
S |
S |
S |
Lights - courtesy, delayed illuminated entry/exit, theatre dimming, front and rear courtesy/reading and trunk |
S |
S |
S |
S |
S |
Mirror - ISRV mirror with auto dimming and dual reading lamps |
- |
- |
- |
S |
- |
Retained accessory power |
S |
S |
S |
S |
S |
Steering column - tilt adjustable |
S |
S |
S |
S |
S |
Steering wheel - leather-wrapped with sound system controls (included with up-level sound system on LS); 50th Anniversary edition has unique accent thread |
O |
S |
S |
S |
S |
Sunshades - LH and RH padded; extendable with vanity mirrors |
S |
S |
S |
- |
- |
Sunshades - LH and RH padded; extendable with illuminated vanity mirrors |
- |
- |
- |
S |
S |
Trunk - release, power remote |
S |
S |
S |
S |
S |
Universal home remote - 3-channel transmitter (included with power sunroof) |
- |
- |
- |
O |
O |
Windows - power, driver's express-down feature and passenger window lock-out features |
S |
S |
S |
S |
S |
Mirror Package - includes electrochromic auto-dimming inside rear-view mirrors and heated exterior rear-view mirrors |
- |
- |
- |
S |
O |
SEATS |
LS |
LT |
LT 50th |
LTZ |
SS |
Cloth front bucket seats - with 5-passenger seating, floor shifter and front floor console |
S |
S |
- |
S |
- |
Cloth front bucket seats - with 6-passenger seating, column shifter, flip-and-fold cushion/console |
O |
O |
- |
O |
- |
Front bucket seats with heated leather-appointed seating surfaces - with 5-passenger seating, floor shifter, front floor console and power 6-way front-passenger adjuster (50th Anniversary edition has unique embroidery on front seats with two-toned appointed leather) |
- |
- |
S |
O |
S |
Front bucket seats with heated leather-appointed seating surfaces - with 6-passenger seating, column shifter, flip-and-fold cushion/console and power 6-way front-passenger adjuster |
- |
- |
- |
O |
- |
Power 6-way driver with manual recliner and lumbar adjuster and manual reclining front-passenger adjuster |
S |
S |
- |
- |
- |
Power 8-way driver with power recliner, manual lumbar adjuster and manual reclining front-passenger adjuster |
- |
- |
S |
S |
S |
Seatback - rear, 60/40 split flip-and-fold-flat |
O |
O |
S |
S |
S |
ENTERTAINMENT |
LS |
LT |
LT 50th |
LTZ |
SS |
All Impala sound systems include an electronically tuned AM/FM stereo with seek up/down, scan, auto tone control, auxiliary audio input jack, TheftLock and digital clock |
S |
S |
S |
S |
S |
AM/FM stereo with CD player |
S |
- |
- |
- |
- |
AM/FM stereo with CD player, MP3 playback and Radio Data System (RDS) (includes leather-wrapped steering wheel with sound system controls on LS) |
O |
S |
S |
S |
S |
AM/FM stereo with in-dash 6-disc CD changer, MP3 playback and Radio Data System (RDS) (includes leather-wrapped steering wheel with sound system controls on LS) |
O |
O |
- |
O |
O |
XM Satellite Radio (includes three trial months beyond which service fees apply; available in 10 Canadian provinces and 48 contiguous United States) |
O |
O |
O |
O |
S |
6-speaker sound system |
S |
S |
S |
S |
- |
8-speaker Bose sound system (requires up-level sound system on LT and LTZ) |
- |
O |
- |
O |
S |
MECHANICAL |
LS |
LT |
LT 50th |
LTZ |
SS |
Battery - with run-down protection |
S |
S |
S |
S |
S |
Brakes - power, 4-wheel disc |
S |
S |
S |
S |
S |
Brakes - 4-wheel anti-lock braking system (ABS) |
S |
S |
S |
S |
S |
Drive - front-wheel |
S |
S |
S |
S |
S |
Engine - 3.5L V6 VVT with SFI, FlexFuel (gasoline/ethanol) |
S |
S |
S |
- |
- |
Engine - 3.9L V6 VVT with SFI, FlexFuel (gasoline/ethanol) and Active Fuel Management |
- |
- |
- |
S |
- |
Engine - 5.3L V8 with SFI and Active Fuel Management |
- |
- |
- |
- |
S |
Engine - block heater |
S |
S |
S |
S |
S |
Exhaust system - aluminized stainless steel |
S |
S |
S |
S |
S |
Exhaust system - dual outlets |
- |
- |
- |
S |
- |
Exhaust system - dual outlets with bright tips |
- |
- |
- |
- |
S |
StabiliTrak - electronic stability control system |
- |
- |
- |
S |
S |
Steering - power, rack-and-pinion |
S |
S |
S |
S |
S |
Suspension - 4-wheel independent |
S |
S |
S |
S |
S |
Suspension - Soft Ride |
S |
S |
- |
- |
- |
Suspension - Sport |
- |
- |
S |
S |
S |
Transmission - 4-speed automatic with overdrive |
S |
S |
S |
S |
- |
Transmission - heavy-duty 4-speed automatic with overdrive |
- |
- |
- |
- |
S |
Vehicle starter system - remote (requires Deluxe Driver Information Centre) |
O |
S |
S |
S |
S |
SAFETY AND SECURITY |
LS |
LT |
LT 50th |
LTZ |
SS |
Air bags - dual-stage, driver and front-passenger, frontal with Passenger Sensing System |
S |
S |
S |
S |
S |
Air bags - front to rear, side head curtain |
S |
S |
S |
S |
S |
Brake/transmission shift interlock |
S |
S |
S |
S |
S |
Door locks - power, programmable with lock-out protection |
S |
S |
S |
S |
S |
Door locks - rear doors, child-security |
S |
S |
S |
S |
S |
Headlights - Daytime Running Lights with automatic light control |
S |
S |
S |
S |
S |
Keyless entry system - remote, includes Panic feature |
S |
S |
S |
S |
S |
OnStar In-Vehicle Communications and Assistance Service - includes one year of the Safe & Sound Plan |
S |
S |
|
S |
S |
OnStar In-Vehicle Communications and Assistance Service - includes one year of the Directions and Conections Plan with Turn-by-Turn navigation |
- |
- |
S |
- |
- |
Safety restraints - LATCH (Lower Anchors and top Tethers for Children), rear seats |
S |
S |
S |
S |
S |
Theft-deterrent system - audible/visible content theft alarm |
- |
- |
- |
S |
S |
Theft-deterrent system - electronic immobilizer |
S |
S |
S |
S |
S |
Traction control - electronic, full-function, engine and brakes |
S |
S |
S |
S |
S |
Warranty - 3 year / 60,000 km, complete base warranty coverage (Whichever comes first, to correct any defects in materials or workmanship occurring during the warranty period. Regular maintenance is not included. Other restrictions, exclusions and limitations apply. See your dealer for complete details of the GM New Vehicle Limited Warranty.) |
S |
S |
S |
S |
S |
Warranty - 5 year / 160,000 km, powertrain component warranty with $0 deductible (Whichever comes first. Conditions and limitations apply. See your dealer for details.) |
S |
S |
S |
S |
S |
S - Standard Equipment. O - Optional Equipment. (Subject to change at any time.)
SPECIFICATIONS
Overview
Models: |
Chevrolet Impala LS, LT, LTZ and SS |
Body style / driveline: |
Front-engine, front-drive, 5- / 6-passenger sedan |
Construction: |
2-sided galvanized steel (except roof); Quiet Steel (F.O.D.) |
EPA vehicle class: |
Large car |
Manufacturing location: |
Oshawa, Ontario, Canada |
Key competitors: |
Ford Five-Hundred, Honda Accord, Toyota Camry, Nissan Altima, Chrysler 300C |
Engines
| |
3.5L V-6 w/VVT (LZE) |
3.9L V-6
(LZG) |
5.3L V-8
(LS4) |
Application: |
LS, LT |
LT, LTZ |
SS |
Type: |
3.5L V-6 |
3.9L V-6 |
5.3L V-8 |
Displacement (cc / cu in): |
3510 / 214 |
3880 / 237 |
5328 / 325 |
Bore & stroke (mm / in): |
99 x 76 / 3.90 x 2.99 |
99 x 84 / 3.90 x 3.31 |
96 x 92 / 3.78 x 3.62 |
Block material: |
Cast iron |
Cast iron |
Cast aluminum |
Cylinder head material: |
Cast aluminum |
Cast aluminum |
Cast aluminum |
Valvetrain: |
Overhead valve, 2 valves per cylinder, continuously variable valve timing |
Overhead valve, 2 valves per cylinder, continuously variable valve timing |
Overhead valve, 2 valves per cylinder, continuously variable valve timing |
Ignition system: |
Quick Sync 58X; direct iridium electrode tip / iridium core spark plugs, low resistance spark plug wires |
Quick Sync 58X; direct iridium electrode tip / iridium core spark plugs, low resistance spark plug wires |
Coil-near-plug, iridium electrode tip / iridium core spark plugs, low resistance spark plug wires |
Fuel Delivery: |
Sequential fuel injection |
Active Fuel Management; sequential fuel injection |
Active Fuel Management; sequential fuel injection |
Compression ratio: |
9.8:1 |
9.8:1 |
10:1 |
Horsepower (hp/ kW @ rpm): |
211 / 157 @ 5800* |
233 / 174 @ 5600 |
303 / 226 @ 5600 |
Torque (lb-ft / Nm @ rpm): |
214 / 290 @ 4000* |
240 / 325 @ 4000 |
323 / 438 @ 4400 |
Fuel: |
Regular unleaded, (LZE E85-capable) |
Regular unleaded; E85 capable |
Premium recommended but not required |
Maximum engine speed (rpm): |
6400 |
6400 |
6100 |
Emissions controls: |
Close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor |
Close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor |
Underfloor catalytic converter, Quick Sync 24X ignition, returnless fuel rail, fast-response O² sensor |
Estimated fuel economy: |
|
|
|
Mi / imp.gal (city / hwy / combined) |
25 / 39 / 29
flexible fuel-gasoline:
25 / 40 / 30
flexible fuel-ethanol:
19 / 31 / 23 |
flexible fuel-gasoline:
25 / 39 / 30
flexible fuel-ethanol:
18 / 29 / 22 |
22 / 35 / 26 |
L / 100 km (city / hwy / combined) |
11.5 / 7.2 / 9.6
flexible fuel-gasoline:
11.3 / 7.0 / 9.4
flexible fuel-ethanol:
14.8 / 9.2 / 12.3 |
flexible fuel-gasoline:
11.5 / 7.2 / 9.5
flexible fuel-ethanol:
15.7 / 9.7 / 13.0 |
12.9 / 8.1 / 10.8 |
Transmission
| |
Hydra-Matic 4T65 |
Type: |
4-speed automatic, front-wheel drive |
Gear ratios (:1): |
|
First: |
2.92 |
Second: |
1.56 |
Third: |
1.00 |
Fourth: |
0.70 |
Reverse: |
2.38 |
Final drive ratio: |
3.5L - 2.86:1
3.9L - 3.29:1
5.3L - 3.29:1 |
Overall drive ratio: |
3.5L - 2.86:1
3.9L - 3.29:1
5.3L - 2.93:1 |
Chassis/Suspension
Suspension type: |
std. with 3.5L: FE1; std with 3.9L & 5.3L: FE3 |
Front: |
Independent MacPherson strut coil-over-spring, twin-tube dampers with gas-charged valving; coil springs; hollow 30-mm stabilizer bar (FE3 has hollow 34-mm stabilizer bar) |
Rear: |
Independent tri-link coil over strut, twin-tube dampers, variable-rate coil springs, 16-mm solid stabilizer bar (FE1); (LTZ/SS FE3 has dual rate coil springs, hollow 19.4-mm stabilizer bar) |
Steering type: |
Power rack-and-pinion (all models) |
Steering ratio: |
13.3:1 (all models) |
Steering wheel turns, lock-to-lock: |
3.5L and 3.9L: 2.4
5.3L: 2.3 |
Turning circle, curb-to-curb (m / ft): |
3.5L and 3.9L: 11.6 / 38
5.3L: 12.2 / 40 |
Brakes
Type: |
4-wheel disc with power assist, vented front, solid rear |
Rotor diameter x thickness (mm): |
front: 303 x 30;
rear: 278 x 11 |
ABS |
Standard on all models |
Wheels/Tires
| |
w/ 3.5L engine |
w/ 3.9L engine |
w/ 5.3L engine |
Wheel size and type: |
std: 16 x 6.5-inch, steel wheels with cover, available cast aluminum w/ five-spoke; opt: same size painted aluminum wheels |
std: five-spoke 18 x 7-inch machine face aluminum wheel |
std: 18 x 7-inch 5-spoke alloy wheels |
Tires: |
P225/60R16 - LS
P225/55R17 - LT |
P235/50R18 (LTZ) |
W-rated P235/50R18 AL3 |
Dimensions
Exterior
Wheelbase (mm / in): |
2807 / 110.5 |
Overall length (mm / in): |
5091 / 200.4 |
Overall width (mm / in): |
1851 / 72.9 |
Overall height (mm / in): |
1491 / 58.7 |
Track (mm / in): |
front: 1585.5 / 62.4 (all)
rear: 1562 / 61.5 |
Curb weight (kg / lb): |
LS: 1613 / 3555
LT: 1613 / 3555
LTZ: 1655 / 3649
SS: 1683 / 3711 |
Weight distribution (% front / rear): |
LS: 62 / 38
LT: 61 / 39
LTZ: 61 / 39
SS: 62 / 38 |
Drag coefficient: |
0.33 |
Interior
| |
Front |
Rear |
Seating capacity: |
LS, LT, LTZ: 2/3; SS: 2 |
All models: 3 |
Headroom (mm / in): |
1001 / 39.4 |
961 / 37.8 |
Legroom (mm / in): |
1076 / 42.3 |
954 / 37.6 |
Shoulder room (mm / in): |
1490 / 58.7 |
1488 / 58.6 |
Hip room (mm / in): |
1432 / 56.4 |
1452 / 57.2 |
Rear pass-through (mm / in): |
-- |
390 / 15.4 x 943 / 37.1 |
Capacities
EPA passenger volume (L / cu ft): |
2959 / 104.5 |
EPA interior volume (L / cu ft): |
3486 / 123.1 |
Cargo volume (L / cu ft): |
526.7 / 18.6 |
Trailer towing maximum (kg / lb): |
454 / 1000 |
Fuel tank (L / imp.gal): |
66.2 / 14.6 |
*Horsepower and torque are SAE certified. A new voluntary power and torque certification procedure developed by the SAE Engine Test Code committee was approved March 31, 2005. This procedure (J2723) ensures fair, accurate ratings for horsepower and torque by allowing manufacturers to certify their engines through third-party witness testing. GM was the first auto manufacturer to begin using the procedure and expects to use it for all newly rated engines in the future.
