LA 2007: Chevrolet Silverado Two-Mode Hybrid

Click the Silverado hybrid for a high-res gallery

Now that General Motors has launched production of their full-sized SUVs with the Two-Mode hybrid system, it's time to spread the wealth. Along with the Cadillac Escalade hybrid that we saw a few days ago, the full-sized Silverado pickup truck is also getting the hybrid treatment. Like it's enclosed, eight-seat cousin, the pickup will get a forty percent boost in city mileage with a twenty-five percent bump overall.

The beauty of the two-mode system in these applications is that gives a substantial boost in fuel efficiency without sacrificing the fundamental functionality of the vehicle. The two-wheel-drive Silverado hybrid can still tow 6,100 lbs thanks to the 6.0L V-8. The hybrid system allows increased use of the cylinder deactivation so that the engine runs on four cylinders under light load, with the electric drive providing power for acceleration when needed. Also like the SUV versions, the pickup has been tuned to operate with less noise under all conditions so that the difference between all-electric and engine drive modes is not as jarring. Depending on the battery state of charge, the truck can run over a mile on electricity alone at speeds up to 30 mph. The Silverado hybrid goes into production in second half of 2008. Details after the jump.

[Source: General Motors]


  • The only hybrid full-size pickup
  • Silverado Crew Cab body style; 2WD and 4WD
  • GM's patented 2-Mode Hybrid system delivers 40-percent improved city fuel economy and 25-percent combined fuel economy gain
  • All-electric drive up to 30 mpg (48 km/h)
  • 6.0L V-8 engine with Active Fuel Management and late-intake valve closing technology
  • 6,100-lb. (2,767 kg) towing capacity (2WD)
  • Cruising range of more than 500 miles
  • On sale in late 2008


LOS ANGELES – Affirming its commitment to fuel solutions and truck leadership, Chevrolet announced the 2009 Chevrolet Silverado Hybrid, a full-size pickup that achieves 40-percent greater city fuel economy and a 25-percent improvement in overall fuel economy. It is expected to be the most fuel-efficient full-size pickup on the market, besting the current V-8 leader – the non-hybrid Silverado.

Partnering General Motors' patented 2-Mode Hybrid system and a powerful 6.0L gas V-8, the Silverado Hybrid delivers highly efficient performance while maintaining full-size pickup capability. The hybrid system provides all-electric driving at low speeds, allowing fuel savings to be realized even when the truck is fully loaded or towing a trailer. Silverado Hybrid can tow up to 6,100 pounds (2,767 kg).

"The Silverado Hybrid is the newest example of Chevy's heritage of truck innovation, which stretches back 90 years, and exemplifies Chevrolet's commitment to fuel solutions," said Ed Peper, Chevrolet general manager. "Silverado Hybrid will deliver fuel economy comparable to many small and midsize trucks that are equipped with four- or six-cylinder engines – all while delivering the capability customers expect of Chevy full-size trucks."

The Silverado Hybrid goes on sale in late 2008 and is based on the award-winning Silverado platform that was introduced for the 2007 model year. It will be offered in the Crew Cab body style; 2WD and 4WD models. Each model features Silverado's "Pure Pickup" trim and comes standard with several popular features, including StabiliTrak electronic stability control system, a locking rear axle and a trailering package.

"Silverado has one of the broadest and deepest lineups of models, configurations and capabilities," said Peper. "The Silverado Hybrid adds to the breadth and depth of offerings, while carrying the core elements that make Silverado one of the most well-equipped and safest trucks in the market."

Silverado offers dual-stage frontal air bags and head curtain side air bags; and is the only full-size truck with five-star side impact ratings in federal crash tests.

Hybrid details

The Silverado Hybrid's fuel-saving performance is derived from GM's advanced Electrically Variable Transmission (EVT) and 300-volt nickel-metal hydride Energy Storage System (ESS), which work in concert with the standard 6.0L V-8 Gen IV gasoline engine with Active Fuel Management (AFM) and late intake valve closing (LIVC) technology. GM's hybrid technology system not only enables the Silverado to launch and drive up to 30 mph on electricity alone, it also allows the 6.0L V-8 engine to operate in its more economical V-4 mode for longer periods.

With GM's 2-Mode Hybrid system, the electric power used to propel the vehicle is generated by the hybrid system itself. When the brakes are applied or the vehicle is coasting, the electric motors within the hybrid system create electricity that is stored in the 300-volt battery. This stored energy is used to move the vehicle and the regenerative braking cycle is renewed.

The 2-Mode Hybrid system provides seamless, dependable power on demand in an efficient package. In fact, its electric motor is less than half the size of those in single-mode hybrid systems. This technology was developed and is still used in fleets of hybrid transit buses in more than 70 North American and European cities. Scaled-down for use in passenger vehicles, the 2-Mode system delivers fuel savings where it is needed most – in large vehicles with high levels of capability. It is a core part of GM's energy diversity efforts, which are centered on reducing dependence on petroleum, improving fuel economy, reducing emissions and minimizing the automobile's impact on the environment.

With the fuel mileage savings of the hybrid system and Silverado's 26-gallon (98-liter) fuel tank, the Silverado Hybrid has a cruising range of more than 500 miles – enough to drive from San Francisco to San Diego.

Quiet and smooth

Integration of the hybrid system on the Silverado is seamless – the battery pack is located in the chassis, beneath the rear seat – and perceptible only in what it lacks: noise.

"The Silverado Hybrid is exceptionally quiet," said Mark Cieslak, vehicle chief engineer. "From a passenger's perspective, the refinement of the hybrid system is quite evident throughout the driving experience, and showcases itself when the vehicle is moving under electric power."

Contributors to the quiet driving experience include:

  • New exhaust system and resonator tuned for the 6.0L engine's Active Fuel Management operation
  • Additional engine intake induction tuning for reduced interior noise and pleasing sound quality
  • Low-rolling resistance, "quiet-tuned" P265/65R18 tires for reduced road noise
  • Electrically driven 300-volt air conditioning compressor reduces vibration and allows the HVAC system to cool the passenger compartment even when the gasoline engine is shut off. Includes the standard tri-zone HVAC system
  • Electrically driven 42-volt variable-assist power steering reduces vibration and provides up to a 0.5-mpg fuel economy improvement by reducing parasitic losses common in belt-driven hydraulic systems
  • Energy Storage System (ESS) cooling system internal fan is tuned to be quiet at low vehicle speeds when the fan could more easily be heard by the occupants

Along with quietness, the Silverado Hybrid also delivers exceptional driving smoothness, thanks to specifically tuned shocks for its Z85 suspension and a new, hydraulic body mount. Located on the passenger-side of the chassis, the hydraulic mount provides a dramatic improvement in highway driving smoothness, particularly on rough or choppy road surfaces.

"The hydraulic mount makes a dramatic improvement in ride quality," said Cieslak.

Additional details specific to the Silverado Hybrid include aerodynamic aids. A slightly deeper front air dam and a hard tonneau cover for the bed reduce air drag, fostering maximum efficiency. The tonneau cover has a three-segment design that enables easy folding or removal.

Trailering performance

In addition to increased fuel economy, the Silverado Hybrid's electrically variable transmission also provides tremendous trailering capability, enhancing the smoothness and driving quality when towing. Electric drive is enabled up to approximately 30 mph (48 km/h), even when towing, allowing fuel savings when the truck is towing a trailer.

"Along with being very smooth, the EVT always provides abundant torque at all RPM levels for easy towing," said Cieslak. "It is particularly helpful on grades, as the EVT's greater ratio spread allows the engine to hold optimal rpm for smooth, steady performance, with no hunting between higher and lower gears."

The EVT incorporates grade braking and tap up/tap down shift control. It also benefits towing on curves or lower-speed back roads, as exceptionally smooth gear transitions eliminate the "shift shock" torque disruption that can occur during abrupt shifts, such as when slowing or braking.

"All-around driving performance, whether towing or not, is excellent," said Cieslak. "The smoothness and quietness of the EVT is the icing on the cake that comes with fuel savings."

Hybrid heritage

The 2009 Silverado Hybrid is the second full-size hybrid pickup from Chevrolet. The previous-generation Silverado was offered as a mild hybrid that professionals found useful as a power generator at worksites.

The new Silverado Hybrid, which features GM's sophisticated hybrid system answers the needs of a broader range of customers and takes advantage of significant technological advances that have been realized since the previous hybrid was offered. The Silverado Hybrid joins the recently introduced Tahoe Hybrid, which also uses the 2-Mode system.

Chevrolet is one of America's best-known and best-selling automotive brands. With the largest dealer network in the United States, Chevy is the leader in full-size trucks and the leader in sales of vehicles priced $35,000 and above. Chevrolet delivers more-than-expected value in every vehicle category, offering cars and trucks priced from $9,995 to $83,175. Chevy delivers expressive design, spirited performance and great value with standard features usually found only on more expensive vehicles. More information on Chevrolet can be found at




Chevrolet Silverado Hybrid

Body style / driveline:

Full-size, 4-door pickup; front-engine, 2WD & 4WD


body-on-frame, all-welded, fully-boxed, ladder-type channel design, with hydroformed front and rear sections

EPA vehicle class:

full-size pickup

Manufacturing location:

Oshawa , Ontario, Canada



Vortec 6.0L V-8 (LFA)


Silverado Hybrid

Displacement (cu in / cc):

364 / 5967

Bore & stroke (in / mm):

4.00 x 3.62 / 101.6 x 92

Block material:

cast aluminum

Cylinder head material:

cast aluminum


overhead valve, 2 valves per cylinder, variable valve timing

Ignition system:

coil-near-plug ignition, iridium electrode tip/ iridium core spark plugs, low resistance spark plug wires

Fuel delivery:

Active Fuel Management™; sequential fuel injection

Compression ratio:


Horsepower (hp / kW @ rpm):

332 / 248 @ 5100*

Torque (lb-ft / Nm @ rpm):

367 / 497 @ 4100*

Recommended fuel:

regular unleaded

Maximum engine speed (rpm):


Emissions controls:

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

EPA estimated fuel economy (city / hwy):




2-Mode continuous electric ratio hybrid transmission with four fixed gears

Gear ratios (:1):










Infinite – 1.70


Infinite – 1.70


1.70 – .5

Final drive ratio:


Vehicle Power System

Power electronics system:

300-volt (transmission, air conditioning; 42-volt (power steering); 12-volt (vehicle accessories)


300-volt (hybrid system); 12-volt (vehicle accessories)



independent, coil-over-shock


2-stage leaf spring

Steering type:

42-volt electric power-assisted rack-and-pinion

Steering ratio:


Steering wheel turns, lock-to-lock:




power-assisted four-wheel discs with fully blended regenerative braking control, standard stability control, traction control and four-channel ABS; vented front discs, solid rear discs; twin-piston front calipers, single-piston rear calipers

Rotor diameter x thickness
(in / mm):

front: 13 x 1.18 / 330.2 x 30
rear: 13.5 x 0.79 / 345 x 20


Wheel size and type:

18 x 8-in. five-spoke bright machine aluminum


P265/65R18 AL2


Wheelbase (in / mm):

143.5 / 3645

Overall length (in / mm):

230.2 / 5844

Overall width (in / mm):

80 / 2032

Overall height (in / mm)


73.8 / 1875


73.7 / 1872

Track (in / mm)


68.1 / 1730


67 / 1702

Min. running ground clearance
(in / mm)

9 / 229

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

2WD: 32.9 / 835
4WD: 32.7 / 831

Step-in height


32.4 / 824


32.4 / 824

Approach angle (deg)





Breakover angle (deg)





Departure angle (deg)






Crew Cab, Front

Crew Cab, Rear

Headroom (in / mm):

41.2 / 1048

40.5 / 1030

Legroom (in / mm):

41.3 / 1049

38.7 / 983

Shoulder room (in / mm):

65.2 / 1657

65.1 / 1655

Hip room (in / mm):

62.5 / 1588

65.4 / 1663

Curb Weight & Payload

GVWR (lb / kg)

Curb Weight (lb / kg)

Max. Payload (lb / kg)

Weight Distribution (% front / rear)


Crew Cab Short Box

7100 / 3220

5641 / 2559

1459 / 662

59 / 41


Crew Cab Short Box

7300 / 3311

5881 / 2667

1418 / 643

59 / 41

Cargo Box

Cargo volume (cu ft / L):

53.2 / 1506

Length at floor (in / mm):

69.29 / 1760

Width at floor (in / mm):

62.4 / 1586

Width between wheelhousings (in / mm):

50.6 / 1286

Tailgate width (in / mm):

61.5 / 1564

Inside height (in / mm):

21 / 553



5 or 6

Fuel tank (gal / L):

26 / 98

Engine oil (qt / L):

6 / 5.7

Cooling system (qt / L):

14.4 / 13.6

GCWR (lb / kg):

2WD: 12000 / 5443
4WD: 12000 / 5443

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

2WD: 6100 / 2767
4WD: 5900 / 2676

* SAE certified .

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