2008 GMC Sierra
1500 & Sierra Denali

2008 GMC Sierra
2500HD & 3500HD

GMC Overview

For release: Aug. 1, 2007

2008 GMC SIERRA 1500 & SIERRA DENALI

New for 2008

Model Lineup

Engines

Transmissions

Vortec 4.3L V-6
(LU3)

Vortec 4.8L V-8
(LY2)

Vortec 5.3L V-8
(LY5, LM6, LH6, LC9)

Vortec 6.0L
V-8
(L76)

Vortec 6.2L V-8 (L92)

4-spd auto (Hydra-Matic 4L60)

4-spd auto (Hydra-Matic 4L70)

6-spd auto (Hydra-Matic 6L80)

Work Truck (1SA)

s 1

o 2

o
LY5 3
LM6/LC9 4
LH6 5

–

–

s

–

–

Crew Cab SL (2SA)

–

s

–

–

–

s

–

–

All models w/ SLE1 (3SA)

–

s 6

o
LY5 3
LM6/LC9 4
LH6 5

o 7

–

s

o

–

Ext. Cab & Crew Cab w/ SLE2 (3SB)

–

–

s
LY5 3
LM6/LC9 4
LH6 5

o 7

–

s

o

–

Ext. Cab & Crew Cab w/ SLT (4SA)

–

–

s
LY5 3
LM6/LC9 4
LH6 5

o 7

–

s

o

–

Sierra Denali Crew Cab

–

–

–

–

s

–

–

s

Key:

Standard

s

Optional

o

Not available

–

2008 GMC SIERRA DEFINES PROFESSIONAL GRADE TRUCKS

The ‘08 Sierra lineup is built on a platform that was introduced last year. It supports the strongest, most capable Sierra lineup in history, with segment-leading fuel economy, capability and power – as well as agile ride and handling and an exceptionally quiet interior.

Sierra 1500 is available in several trim packages, including Work Truck, SL (crew cab only), SLE (SLE1 and SLE2 models) and SLT, along with 2WD and 4WD configurations. Three cab styles – regular, extended and crew cab – and three cargo box lengths – 5 foot 8 inches, 6 foot 6 inches and 8 foot – are offered.

The unique Sierra Denali, a truck that fuses performance and unmatched luxury, also returns for 2008. It is a distinct model, with differentiated, exclusive features that elevate its performance and design, such as an exclusive 6.2L all-aluminum V-8 engine with variable valve timing and a six-speed automatic transmission.

Because the Sierra was all-new in 2007, changes for ’08 are comparatively minor, enhancing Sierra’s style and range of models. They include standard XM Satellite Radio on all models, availability of a power-adjustable driver’s seat on regular cab models with a bench seat and two new exterior colors: Dark Crimson Metallic and Sonoma Red Metallic. Customers can now order a set of new, 22-inch bright-finish aluminum wheels and complementing tires for their Sierra 1500, available as a dealer-installed option.

Also new for ’08 is an integrated trailer brake controller on light-duty models. It is available on extended cab and crew cab models. Previously available only heavy-duty models, it is integrated with the ABS system and provides immediate and measured brake force signaling to electric-controlled trailer brake systems. There is no requirement for external and/or aftermarket brake control systems. The brake controller switch is conveniently mounted on the lower-left section of the instrument panel.

Later in the 2008 model year, the Sierra All Terrain will bow. This special model is based on the popular Z71 Off Road package and offers a distinctive, eye-catching combination of style and refinement. It is outfitted with special shocks, unique interior and exterior design cues, 18-inch chrome wheels and more (see Sierra All Terrain section below).

Sierra design

The 2008 GMC Sierra is designed with a strong and refined appearance befitting the brand’s professional grade philosophy, including muscular character lines and rounded edges. The front-end appearance, front fenders, hood and rear fenders are unique. A “center-focused” hood, which flows outward to meet the front fenders and stamped-in rear wheel flares enhance the muscular look.

All models except the fleet-oriented work truck model come with a distinctive chrome hood molding. Sierra’s grille is complemented by large, jeweled-appearance headlamps. Sierra SLT models come with a chrome front bumper with a body-color top cap. All door handles feature large, grab-style designs that are easy to open with gloves.

A family of 17- and 20-inch factory-installed wheels and tires is available throughout the Sierra range, with Sierra Denali offering unique wheels (see Sierra Denali section below). New for 2008 is a set of bright-finish 22-inch wheels, which is available as a dealer-installed option.

Spacious, refined interior

Sierra models are more spacious with increased storage space, as well as flush surfaces, tight gaps and tolerances, and improved comfort and convenience. Sierra Work Truck and SLE come with a “pure pickup” interior that features larger controls and door handles that are easier to use with gloves. SLE1 models on regular, extended and crew cabs are equipped with a new 40/20/40-split front bench seat, which features a fold-down armrest and storage compartment.

A large-capacity “double” glove box is integrated into the instrument panel on work truck and SLE models. Cloth seats are standard on SLE models and available on Work Trucks; leather seating is available on SLE models. SLE2-equipped vehicles add a six-way power-adjustable driver seat. Work Truck models are offered in a Dark Titanium interior color; SLE models are offered in an all-Ebony interior color, or Dark Titanium/Light Titanium and Ebony/Light Cashmere combinations.

SLT models feature a luxury-inspired interior with unique instrument panel, door panels, larger-capacity center console and other distinct trim. Heated, 12-way power-adjustable driver’s seat, leather seating surfaces, Bose speaker system and heated windshield washer system are standard. Crew cab SLT models add a rear-seat audio system. SLT interior color schemes include all-Ebony, Dark Titanium/Light Titanium and Dark Cashmere/Light Cashmere combinations.

Standard on crew cab models and available on extended cab models is a stadium-style rear seat with a 60/40-split design. It can be easily folded up to provide an uninterrupted load floor. Or, either section of the split seat can be stowed independently, allowing room for both cargo and a rear-seat passenger. Entry to the rear seat/storage area of extended cab models is eased with rear access doors that open 170 degrees.

A variety of useful convenience items are available on SLE and SLT models, including a touch-screen navigation radio, power-operated sunroof, power-sliding rear window and XM Satellite Radio. A rear seat entertainment system is available on crew cab SLE2 and SLT models, and all models are available with a variety of radio systems. XM Satellite Radio is standard on all models.

Responsive driving experience

The 2008 GMC Sierra delivers enhanced stability and driving confidence from a new, boxed frame, coil-over-shock front suspensions and rack-and-pinion steering. Fives suspension systems are available, each tailored to suit specific driving requirements. They include:

GM’s sophisticated StabiliTrak electronic stability control system helps mitigate the occurrence of rollover events; it is standard on crew cab models and available on extended cab models – and is a segment exclusive. Partnered with an improved, high capacity brake system and four-channel, four-sensor electronic brake controls, the system provides more precise, controlled ABS stops, as well as enhanced traction/yaw stability.

Sierra powertrains

Sierra models are powered by an efficient lineup of engines, led by the segment’s highest-rated V-8 engines. Advanced technology, such as Active Fuel Management (AFM) and variable valve timing (VVT), helps Sierra deliver the segment’s best fuel economy. A FlexFuel engine is available – and partnered with fuel-saving AFM – gives customers the choice of powering their truck with E85 ethanol, gasoline or a combination of both fuels. Light-duty engine offerings include:

The engines are backed by proven Hydra-Matic electronically controlled automatic transmissions, including the 4L60 four-speed automatic, high capacity 4L70 four-speed automatic and a new 6L80 six-speed with the Sierra Denali’s 6.2L engine. The six-speed automatic has a wide, 6.04:1 overall ratio – including two overdrive gears – that helps deliver an excellent balance of performance and fuel economy. Also, the 6L80 has a “tap up/tap down” capability that allows the driver to manually select upshifts and downshifts with a button on the column shifter.

Safety and security

As evidenced by its five-star frontal crash test rating from NHTSA, Sierra delivers a perimeter of safety protection through a stronger frame and body structure as well as industry- and segment-leading technology. It also is designed to provide increased compatibility with other vehicles. New features include segment-first StabiliTrak electronic stability control with rollover mitigation technology, head curtain side air bags, which are integrated into strengthened chassis and body structures to provide excellent passenger protection, and segment-first safety belt pretensioners that activate during a rear-end crash. The head curtain side air bags are available on Sierra SLE and SLT models; they are standard on Sierra Denali models.

Driver control dynamics are enhanced by wider front and rear tracks, as well as more responsive suspensions – including a new coil-over-shock front suspension design and rack-and-pinion steering. Additional safety features are offered on Sierra, including factory-installed remote vehicle starting (segment exclusive), Autotrac active transfer case to help keep the vehicle sure-footed in slippery driving situations, Ultrasonic Rear Parking Assist and a revised, easier-to-use tire pressure monitoring system.

All retail models come standard with the OnStar Generation 7 system, including a one-year subscription to the Safe & Sound plan. The OnStar service includes the General Motors Advanced Automatic Crash Notification (AACN) system, making crash data available to emergency services to potentially dispatch the appropriate life-saving personnel and equipment to crash scenes faster. If the vehicle is in a crash that activates an air bag, the OnStar system automatically notifies an OnStar advisor, who will check on the occupants or summon emergency help if necessary. OnStar also can assist authorities in locating a vehicle if it is reported stolen and provides remote door-unlocking service (when the vehicle is equipped with power door locks).

Sierra Denali details

The Sierra Denali is offered in 2WD and AWD configurations. It is powered by an exclusive 6.2L V-8 engine, rated at 403-horsepower (300 kW)* and 417 lb.-ft. of torque (565 Nm).* The engine is paired with the Hydra-Matic 6L80 six-speed automatic transmission. The six-speed automatic has a wide, 6.04:1 overall ratio – including two overdrive gears – that helps deliver an excellent balance of performance and fuel economy. Also, the 6L80 has a “tap up/tap down” capability that allows the driver to manually select upshifts and downshifts with a button on the column shifter.

Sierra Denali also features a 9.5-inch rear axle (2WD) or 8.6-inch rear axle (AWD) with 3.42 gears and a locking rear differential. The Z85 suspension, four-wheel disc brakes, StabilTrak, skid plates and tow hooks are standard. Eighteen-inch polished aluminum wheels are standard and unique 20-inch factory installed chrome-finish aluminum wheels are available. The wheel designs are not shared with other Sierra models.

An iconic, Denali-specific chrome grille makes the truck instantly recognizable. Additional chrome trim and body-color bumpers further distinguish it. Sierra Denali is available in three exterior colors: Onyx Black, Olympic White and Fine Silver Birch Metallic.

Sierra Denali also offers a unique combination of interior style and luxury, including standard nuance leather-covered front and rear seats, with heated, 12-way power-adjustable front seats, as well as leather trim throughout. A Denali-exclusive leather-wrapped steering wheel, which features wood grain accents and a host of auxiliary controls, is standard. Denali models also feature a unique center console, enhanced interior bright work and detailed, highly finished embossed sill plates that greet passengers when they open any of the Sierra Denali’s doors. The unique center console has wood grain trim that conceals the lid and cupholder pockets, creating a more finished and refined appearance. In addition to a full complement of standard amenities, Sierra Denali offers such exclusive features as an available heated steering wheel. Interior colors include all-Ebony and an exclusive Cocoa/Light Cashmere combination.

Standard features include rollover capable head curtain air bags, power-adjustable pedals, electrochromic (auto-dimming) inside mirror, dual-zone automatic climate control, rain-sensing automatic windshield wipers, remote starting system, EZ Lift Tailgate and Ultrasonic Rear Parking Assist. From an entertainment standpoint, Sierra Denali comes standard with an AM/FM MP3-capable radio with a six-disc in-dash CD changer, Bose premium speaker sound system, rear-seat audio and XM Satellite Radio.

Optional features include the cargo management system, power-sliding rear window, roof rack, navigation radio system, power sunroof and a DVD-based rear-seat entertainment system.

Sierra All Terrain

The Sierra All-Terrain builds on the dynamic Z71 Off Road package with a roster of stylish, refined and capable features that combine to create a unique truck that’s ready for anything. The All Terrain will be available on extended cab standard box and crew cab models in either 2WD or 4WD.

Product details include:

Sierra All Terrain is offered in six exterior colors: Fire Red, Black, Silver, Stealth Gray, White and Graystone.

*SAE certified.

# # #

Contact:
Randy Fox
GMC Communications
Phone: 313-667-4128
E-mail: randal.l.fox@gm.com

Kelly Wysocki
Full-Size Truck Communications
Phone : 586-492-0122
E-mail : kelly.wysocki@gm.com

Tony LaRocca
GM of Canada Communications
Phone : 905-644-1804
E-mail : tony.larocca@gm.com

Antonio Sanchez Jimenez
Gerente de Relaciones Públicas y Comunicación
General Motors de Mexico
Office: 011-5255-5901-3042
E-mail: angelantonio.sanchezjimenez@gm.com

SPECIFICATIONS

(See GM of Canada section for Canadian product information)

Sierra Light-Duty Regular Cab

Models:

C/K 10703: regular cab standard box, 2WD & 4WD

C/K 10903: regular cab long box, 2WD & 4WD

Body style / driveline:

2/3-passenger regular cab, ½-ton, 2- and 4-wheel drive light-duty pickups available with 6-foot 6-inch, and 8-foot (2 m and 2.4 m) box

EPA vehicle class:

full-size truck

Manufacturing location:

Pontiac, Mich.; Fort Wayne, Ind.

Key competitors:

Ford F-Series, Dodge Ram, Toyota Tundra, Nissan Titan

Engines

 

Vortec 4.3L V-6 (LU3)

Vortec 4.8L V-8 (LY2)

Vortec 5.3L V-8 FlexFuel (LMG)

Vortec 5.3L V-8 (LY5)

Type:

4.3L V-6

4.8L V-8

5.3L V-8

5.3L V-8

Displacement (cu in / cc):

262 / 4300

293 / 4807

325 / 5328

325 / 5328

Bore & stroke (in / mm):

4 x 3.48 / 101.6 x 88

3.78 x 3.27 / 96 x 83

3.78 x 3.62 / 96 x 92

3.78 x 3.62 / 96 x 92

Block material:

cast iron

cast iron

cast iron

cast iron

Cylinder head material:

cast iron

cast aluminum

cast aluminum

cast aluminum

Valvetrain:

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

Ignition system:

direct composite distributor, platinum-tipped spark plugs, low-resistance spark plug wires

coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires

coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires

coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires

Fuel delivery:

sequential fuel injection

sequential fuel injection

Active Fuel Management; sequential fuel injection

Active Fuel Management; sequential fuel injection

Compression ratio:

9.2:1

9.1:1

9.9:1

9.9:1

Horsepower (hp / kW @ rpm):

195 / 145 @ 4600

295 / 220 @ 5600*

315 / 235 @ 5200*

315 / 235 @ 5200*

Torque (lb-ft / Nm @ rpm):

260 / 353 @ 2800

305 / 414 @ 4800*

338 / 458 @ 4400*

338 / 458 @ 4400*

Recommended fuel:

regular unleaded

regular unleaded

E85 and/or regular unleaded

regular unleaded

Maximum engine speed (rpm):

5600

 6000

 6000

6000

Emissions controls:

close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor

EPA estimated fuel economy (city / hwy):

2WD: 15 / 20
4WD: 14 / 18

2WD: 14 / 19
4WD: 14 / 18

2WD: 15 / 20
4WD: 14 / 19

2WD: 15 / 20
4WD: 14 / 19

Transmissions

Hydra-Matic 4L60 (M30)

Type:

4-speed automatic

Gear ratios (:1):

First:

3.06

Second:

1.63

Third:

1.00

Fourth:

0.70

Fifth:

—

Sixth:

—

Reverse:

2.29

Final drive ratio (std. & avail.):

3.23

 

3.42

 

3.73

 

4.10

Chassis/Suspension

Front:

2WD & 4WD: independent coil-over-shock; monotube shock absorbers

Rear:

solid axle with semi-elliptic, variable-rate, two-stage multileaf springs; splayed shock absorbers; monotube shocks available

Steering type:

power-assisted rack-and-pinion (2WD & 4WD)

Steering ratio:

19.2:1

Steering wheel turns, lock-to-lock:

3.5

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

2WD/4WD Reg. Cab Standard Box:

39.7 / 12.1

2WD/4WD Reg. Cab Long Box:

44.3 / 15.4

Brakes

Type:

power-assisted, front disc/rear drum, 4-wheel ABS

Rotor diameter x thickness (in / mm)

 

disc/drum brakes:

front: 12.99 x 1.18 / 330 x 30
rear: 11.61 x 2.36 / 295 x 60

Total swept area (sq in / sq cm)

 

disc/drum brakes:

front: 301.2 / 1944
rear: 172.4 / 1112

Wheels/Tires

Wheel size & type:

17 x 7.5-in. steel

 

17 x 7.5-in. clad aluminum

 

17 x 7.5-in. bright machine aluminum

 

20 x 8.5-in. six-spoke polished aluminum

 

22-inch (dealer installed)

Tires:

P245/70R17 all season, blackwall or white letter

 

P265/70R17 AL2, blackwall or white letter

 

P265/70R17 on/off road, blackwall or white letter

 

P275/55R20 AL2 blackwall

 

22-inch TBD (dealer installed)

Dimensions
Exterior

 

Regular Cab, Standard Box

Regular Cab, Long Box

Wheelbase (in / mm):

119 / 3023

133 / 3378

Overall length (in / mm):

205.7 / 5222

224.6 / 5702

Overall width (in / mm):

79.9 / 2029

79.9 / 2029

Overall height (in / mm)

   

2WD:

73.9 / 1876

73.7 / 1872

4WD:

73.9 / 1876

73.8 / 1875

Track (in / mm)

   

Front:

68.1 / 1730

68.1 / 1730

Rear:

67 / 1702

67 / 1702

Min. running ground clearance

   

2WD:

8.4 / 215

8.9 / 227

4WD:

9 / 229

9.4 / 240

Ground to top of load floor (in / mm):

2WD: 34.7 / 881

4WD: 33.9 / 861

2WD: 34.7 / 881

4WD: 33.9 / 861

Step-in height

   

2WD:

32.4 / 824

32.4 / 824

4WD:

32.4 / 824

32.4 / 824

Approach angle (deg)

   

2WD:

15.1

16

4WD:

16.2

17

Breakover angle (deg)

   

2WD:

24.4

21.5

4WD:

24.4

21.8

Departure angle (deg)

   

2WD:

25

24.1

4WD:

24.2

23.3

Interior

 

Regular Cab

Headroom (in / mm):

41.4 / 1051

Legroom (in / mm):

41.3 / 1049

Shoulder room (in / mm):

65.2 / 1657

Hip room (in / mm):

62.5 / 1588

Curb Weight & Payload

 

GVWR (lb / kg)

Curb Weight (lb / kg)

Max. Payload (lb / kg)

Weight Distribution (% front / rear)

2WD

       

Reg. Cab Standard Box:

6400 / 2903

4448 / 2016

1952 / 885

58 / 42

Reg. Cab Long Box:

6400 / 2903

4588 / 2081

1812 / 822

58 / 42

4WD

       

Reg. Cab Standard Box:

6400 / 2903

4687 / 2126

1713 / 777

59 / 41

Reg. Cab Long Box:

6400 / 2903

4836 / 2194

1564 / 709

59 / 41

Cargo box

 

Regular Cab, Standard Box

Regular Cab, Long Box

Cargo volume (cu ft / L):

60.7 / 1718

75.5 / 2138

Length at floor (in / mm):

78.7 / 1999

97.61 / 2479.2

Width at floor (in / mm):

62.4 / 1586

62.4 / 1586

Width between wheelhousings (in / mm):

50.6 / 1286

50.6 / 1286

Tailgate width (in / mm):

61.5 / 1564

61.5 / 1564

Inside height (in / mm):

21 / 553

21 / 553

Capacities

 

Regular Cab, Standard Box

Regular Cab, Long Box

 

Seating:

2 or 3

2 or 3

 

Fuel tank (gal / L):

26 / 98

34 / 128

 
 

Vortec 4.3L

Vortec 4.8L

Vortec 5.3L

Engine oil (qt / L):

4.5 / 4.3

6 / 5.7

6 / 5.7

Cooling system (qt / L):

12.6 / 11.9

13.4 / 12.7

14.9 / 14.1

Trailering

Trailer towing maximum with ball hitch (lb / kg):

 

Reg. Cab, Std. Box

2WD: 8200 / 3720 (5.3L w/ 3.73 axle)
4WD: 8900 / 4037 (5.3L w/ 4.10 axle)

Reg. Cab, Long Box

2WD: 8000 / 3629 (5.3L w/ 3.73 axle)
4WD: 8900 / 4037 (5.3L w/ 4.10 axle)

* 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.

Note: Information shown is current at time of publication.

Sierra Light-Duty Extended Cab

Models:

C/K 10753: extended cab Standard Box, 2WD & 4WD

 

C/K 10953: extended cab Long Box, 2WD & 4WD

Body style / driveline:

5/6-passenger extended cab, 1/2-ton, 2-and 4 -wheel drive light-duty pickups available with 5-foot 8-inch, 6-foot 6-inch, and 8-foot (1.7 m, 2 m and 2.4 m) box

EPA vehicle class:

full-size truck

Manufacturing location:

Pontiac, Mich.; Oshawa, Ontario, Canada; Fort Wayne, Ind.

Key competitors:

Ford F-Series, Dodge Ram, Toyota Tundra, Nissan Titan

Engines

 

Vortec 4.3L V-6 (LU3)

Vortec 4.8L V-8 (LY2)

Vortec 5.3L V-8 FlexFuel (LMG)

Type:

4.3L V-6

4.8L V-8

5.3L V-8

Displacement (cu in / cc):

262 / 4300

293 / 4807

325 / 5328

Bore & stroke (in / mm):

4 x 3.48 / 101.6 x 88

3.78 x 3.27 / 96 x 83

3.78 x 3.62 / 96 x 92

Block material:

cast iron

cast iron

cast iron

Cylinder head material:

cast iron

cast aluminum

cast aluminum

Valvetrain:

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

Ignition system:

direct composite distributor, platinum-tipped spark plugs, low-resistance spark plug wires

coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires

coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires

Fuel delivery:

sequential fuel injection

sequential fuel injection

Active Fuel Management; sequential fuel injection

Compression ratio:

9.2:1

9.1:1

9.9:1

Horsepower (hp / kW @ rpm):

195 / 145 @ 4600*

295 / 220 @ 5600*

315 / 235 @ 5200*

Torque (lb-ft / Nm @ rpm):

260 / 353 @ 2800*

305 / 414 @ 4800*

338 / 458 @ 4400*

Recommended fuel:

regular unleaded

regular unleaded

E85 and/or regular unleaded

Maximum engine speed (rpm):

5600

 6000

 6000

Emissions controls:

close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor

EPA estimated fuel
economy (city / hwy): 		2WD: 15 / 20 2WD: 14 / 19
4WD: 14 / 18 		2WD: 15 / 20
4WD: 14 / 19

Engines cont’d

 

Vortec 5.3L V-8 (LY5)

Vortec 6.0L V-8 Vortec Max (L76)

Type:

5.3L V-8

6.0L V-8

Displacement (cu in / cc):

325 / 5328

364 / 5967

B ore & stroke (in / mm):

3.78 x 3.62 / 96 x 92

4 x 3.62 / 101.6 x 92

Block material:

cast iron

cast iron

Cylinder head material:

cast aluminum

cast aluminum

Valvetrain:

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

Ignition system:

coil near plug, composite distributor, platinum-tipped spark plugs, low-resistance spark plug wires

variable valve timing, coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires

Fuel delivery:

Active Fuel Management; sequential fuel injection

Active Fuel Management; sequential fuel injection

Compression ratio:

9.9:1

9.6:1

Horsepower (hp / kW @ rpm):

315 / 235 @ 5200*

367 / 274 @ 5500*

Torque (lb-ft / Nm @ rpm):

338 / 458 @ 4400*

375 / 508 @ 4300*

Recommended fuel:

regular unleaded

regular unleaded

Maximum engine speed (rpm):

6000

6000

Emissions controls:

close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor

EPA fuel economy (city / highway):

2WD: 15 / 20
4WD: 14 / 19

2WD: 13 / 18
4WD: 13 / 17

Transmissions

 

Hydra-Matic 4L60 / 4L65 (M30/ /M32)

Hydra-Matic 4L70 (M70)

Type:

4-speed automatic

4-speed automatic

Gear ratios (:1):

   

First:

3.06

3.06

Second:

1.63

1.63

Third:

1.00

1.00

Fourth:

0.70

0.70

Fifth:

—

—

Sixth:

—

—

Reverse:

2.29

2.29

Final drive ratio
(std. & avail.):

3.23

4.10

 

3.42

 
 

3.73

 
 

4.10

 

Chassis/Suspension

Front:

2WD & 4WD: independent coil-over-shock; monotube shock absorbers

Rear:

solid axle with semi-elliptic, variable-rate, two-stage multileaf springs; splayed shock absorbers; monotube shocks

Steering type:

power-assisted rack-and-pinion (2WD & 4WD)

Steering ratio:

16.73:1

Steering wheel turns, lock-to-lock:

3

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

 

2WD/4WD Ext. Cab Short Box:

44.6 / 13.6

2WD/4WD Ext. Cab Standard Box:

46.9 / 14.3

2WD/4WD Ext. Cab Long Box:

51.2 / 15.6

Brakes

Type:

power-assisted, 4-wheel disc, 4-wheel ABS; or power-assisted, front disc/rear drum, 4-wheel ABS

Rotor diameter x thickness (in / mm)

 

disc/drum brakes:

front: 12.99 x 1.18 / 330 x 30
rear: 11.61 x 2.36 / 295 x 60

with 4-wheel disc:

front: 13 x 1.18 / 330.2 x 30
rear: 13.5 x 0.79 / 342.9 x 20

Total swept area (sq in / sq cm)

 

with disc/drum brakes:

front: 301.2 / 1944
rear: 172.4 / 1112

with 4-wheel disc:

front: 257 / 1656
rear: 113 / 732

Wheels/Tires

Wheel size & type:

17 x 7.5-in. steel

 

17 x 7.5-in. clad aluminum

 

17 x 7.5-in. bright machine aluminum

 

20 x 8.5-in. six-spoke polished aluminum

Tires:

P24570R17 all season, blackwall or white letter

 

P265/70R17 AL2, blackwall or white letter

 

P265/70R17 on/off road, blackwall or white letter

 

P275/55R20 AL2 blackwall

Dimensions
Exterior

 

Extended Cab, Standard Box

Extended Cab, Long Box

Wheelbase (in / mm):

143.5 / 3645

157.5 / 4001

Overall length (in / mm):

230.2 5844

249.2 / 6325

Overall width (in / mm):

79.9 / 2029

79.9 / 2029

Overall height (in / mm)

   

2WD:

73.9 / 1876

73.6 / 1870

4WD:

73.7 / 1872

73.6 / 1868

Track (in / mm)

   

Front:

68.1 / 1730

68.1 / 1730

Rear:

67 / 1702

67 / 1702

Min. running ground clearance

   

2WD:

8.9 / 226

9 / 230

4WD:

9 / 228

9.3 / 240

Ground to top of load floor (in / mm):

2WD: 33.8 / 858
4WD: 33.4 / 848

2WD: 33.5 / 851
4WD: 33.1 / 841

Step-in height

   

2WD:

32.4 / 824

32.4 / 824

4WD:

32.4 / 824

32.4 / 824

Approach angle (deg)

   

2WD:

15.9

16.2

4WD:

16

16.4

Breakover angle (deg)

   

2WD:

19.6

18

4WD:

19.3

17.8

Departure angle (deg)

   

2WD:

24

22.8

4WD:

23.3

22

Interior

 

Extended Cab, Front

Extended Cab, Rear

Headroom (in / mm):

41.2 / 1048

39.2 / 997

Legroom (in / mm):

41.3 / 1049

34.33 / 872

Shoulder room (in / mm):

65.2 / 1657

65.3 / 1658

Hip room (in / mm):

62.5 / 1588

61.9 / 1571.4

Curb Weight & Payload

 

GVWR (lb / kg)

Curb Weight (lb / kg)

Max. Payload (lb / kg)

Weight Distribution (% front / rear)

2WD

       

Ext. Cab Standard Box:

6400 / 2903

4797 / 2176

1603 / 727

58 / 42

Ext. Cab Long Box:

6900 / 3130

5213 / 2365

1687 / 765

59 / 41

4WD

       

Ext. Cab Standard Box:

7000 / 3175

5265 / 2388

1735 / 787

59 / 41

Ext. Cab Long Box:

7000 / 3175

5426 / 2461

1574 / 714

60 / 40

Cargo box

 

Extended Cab, Standard Box

Extended Cab, Long Box

Cargo volume (cu ft / L):

60.7 / 1718

75.5 / 2138

Length at floor (in / mm):

78.7 / 1999

97.82 / 2484.7

Width at floor (in / mm):

62.4 / 1586

62.4 / 1586

Width between wheelhousings (in / mm):

50.6 / 1286

50.6 / 1286

Tailgate width (in / mm):

61.5 / 1564

61.5 / 1564

Inside height (in / mm):

21 / 553

21 / 553

Capacities

 

Extended Cab, Standard Box

Extended Cab, Long Box

 

Seating:

5 or 6

5 or 6

 

Fuel tank (gal / L):

26 / 98

34 / 128

 
 

Vortec
4.3L

Vortec
4.8L

Vortec
5.3L

Vortec
6.0L

Engine oil (qt / L):

4.5 / 4.3

6 / 5.7

6 / 5.7

6 / 5.7

Cooling system (qt / L):

12.6 / 11.9

13.4 / 12.7

14.9 / 14.1

14.4 / 13.6

Trailering

Trailer towing maximum with ball hitch (lb / kg):

 

Ext. Cab, Std. Box:

2WD: 8800 / 3992 (6.0L w/ 3.73 axle)
4WD: 8500 / 3856 (6.0L w/ 3.73 axle)

Ext. Cab., Std. Box (w/ enhanced trailering pkg.):

2WD: 10300 / 4672 (6.0L w/ 3.73 axle)
4WD: 10500 / 4763 (6.0L w/ 3.73 axle)

Ext. Cab, Long Box:

2WD: 7500 / 3402 (5.3L w/ 3.73 axle)
4WD: 8300 / 3765 (5.3L w/ 4.10 axle)

* 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.

Note: Information shown is current at time of publication.

Sierra Light-Duty Crew Cab

Models:

C/K 10543: crew cab Short Box, 2WD & 4WD; AWD Denali

Body style / driveline:

5/6-passenger crew cab, 1/2-ton, 2-, 4- and all-wheel drive light-duty pickups available with 5-foot 8-inch (1.7 m) box

EPA vehicle class:

full-size truck

Manufacturing location:

Oshawa, Ontario, Canada; Silao, Mexico

Key competitors:

Ford F-Series, Dodge Ram, Toyota Tundra, Nissan Titan

Engines

 

Vortec 4.8L V-8 (LY2)

Vortec 5.3L V-8 FlexFuel (LMG)

Vortec 5.3L V-8 FlexFuel (LC9)

Type:

4.8L V-8

5.3L V-8

5.3L V-8

Displacement (cu in / cc):

293 / 4807

325 / 5328

325 / 5328

Bore & stroke (in / mm):

3.78 x 3.27 / 96 x 83

3.78 x 3.62 / 96 x 92

3.78 x 3.62 / 96 x 92

Block material:

cast iron

cast iron

cast aluminum

Cylinder head material:

cast aluminum

cast aluminum

cast aluminum

Valvetrain:

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

OHV, 2 valves per cylinder

Ignition system:

coil near plug, composite distributor, platinum-tipped spark plugs, low-resistance spark plug wires

coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires

coil near plug, platinum-tipped 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:

9.1:1

9.9:1

9.9:1

Horsepower (hp / kW @ rpm):

295 / 220 @ 5600*

315 / 235 @ 5200*

315 / 235 @ 5200*

Torque (lb-ft / Nm @ rpm):

305 / 414 @ 4800*

338 / 458 @ 4400*

338 / 458 @ 4400*

Recommended fuel:

regular unleaded

E85 and/or regular unleaded

E85 and/or regular unleaded

Maximum engine speed (rpm):

 6000

 6000

 6000

Emissions controls:

close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor

EPA estimated fuel
economy (city / hwy): 		2WD: 14 / 19
4WD: 14 / 18 		2WD: 15 / 20
4WD: 14 / 19 		2WD: 15 /20
4WD: 14 /19

Engines cont’d

 

Vortec 5.3L V-8 (LH6)

Vortec 5.3L V-8 (LY5)

Vortec 6.0L V-8 Vortec Max (L76)

Vortec 6.2L V-8 (L92) – Denali

Type:

5.3L V-8

5.3L V-8

6.0L V-8

6.2L V-8

Displacement (cu in / cc):

325 / 5328

325 / 5328

364 / 5967