Chevrolet GMC Yukon Bedienungshandbuch PDF herunterladen (Seite 7)

By sensing load and demand, AFM improves

fuel efficiency by activating or deactivating

cylinders (two on the V-6 and four on the

V-8). It’s standard on all Sierra 1500 and

Yukon models.

ACTIVE FUEL MANAGEMENT (AFM)

For responsiveness in low-speed city driving

and bold power for open-road passing or

trailering, all Canyon, Sierra and Yukon

engines feature continuously VVT.

VARIABLE VALVE TIMING (VVT)

EcoTec3 5.3L V-8 Engine (shown)

For precise fuel distribution and fast,

efficient combustion, all Canyon, Sierra

1500, Yukon, Terrain and Acadia engines

benefit from DI technology. The system

moves the fuel closer to the combustion

chamber—the ignition point in the engine.

DIRECT INJECTION (DI)

The engines in GMC vehicles are specifically designed to provide the power and performance needed to handle

light, medium or heavy loads over the long haul. They consistently deliver the high torque ratings needed to pull

heavy loads and the horsepower needed to keep you moving down the road with confidence and control.

ECOTEC3

The EcoTec3 engine family (SIerra offers a 4.3L

V-6, 5.3L V-8 and 6.2L V-8) features GMC’s latest

technologies to deliver the power and fuel economy

you

need. For 2015, 6.2L V-8 models are equipped with a new

Hydra-Matic 8-speed automatic. Yukon features the 5.3L

and Yukon Denali includes the 6.2L.

DURAMAX DIESEL V-8 AND ALLISON® 6-SPEED

AUTOMATIC TRANSMISSION The Sierra Heavy Duty

models are available with the Duramax 6.6L V-8 Turbo Diesel

engine and the Allison 6-speed automatic transmission. The

Allison transmission’s target lifespan of up to 200,000

miles

is made possible through the use of larger, heavier

components than normally found in 1-ton pickups.

With an extraordinary 765 lb-ft of torque, the Duramax

Diesel makes the 3500HD the most powerful Sierra HD ever.

VORTEC ENGINE TECHNOLOGY Mile after mile, our

Vortec engines reassert their reputation for stand-up

performance and innovative, breakthrough engineering.

This performance all starts with a unique cylinder head

design: By developing an effective airflow velocity and path,

just as a tornado twists a column of air, the Vortec cylinder

head improves the air/fuel mix for better performance and

fuel efficiency. In addition, the coil-near-plug ignition

produces a reliable spark, and a stiff engine block provides

superior vibration damping.

LOCKING REAR DIFFERENTIAL Many GMC models are

available with an Eaton

automatic locking rear differential,

designed to improve low-speed traction of your 2WD or 4WD

vehicle. The differential engages when the speed difference

between the rear tires reaches approximately 100 rpm. Once

the differential engages, both rear wheels rotate at the same

speed, providing more of the driveline’s torque to the tire

with better traction.

EPA-estimated mpg for Sierra 1500: 4.3L EcoTec3 engine: 18 city/24 hwy (2WD); 5.3L EcoTec3 engine: 16 city/23 hwy (2WD); 6.2L EcoTec3 engine: 15 city/21 hwy (2WD).

EPA-estimated mpg for Yukon: 5.3L EcoTec3

engine: 16 city/23 hwy (2WD); 6.2L EcoTec3 engine: 15 city/22 hwy (2WD).

Maintenance needs vary with different driving conditions.

POWER AND PERFORMANCE

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