2008 Chevrolet Tahoe Hybrid

• Competes with: Other than its forthcoming corporate twins — the GMC Yukon Hybrid and Cadillac Escalade Hybrid — nothing
• Looks like: A conventionally powered Chevrolet Tahoe sport utility vehicle
• Hits dealerships: 2007

Recently redesigned for the 2007 model year, Chevrolet's full-size Tahoe sport utility vehicle will be available with a two-mode hybrid powertrain next year. Additionally, the Tahoe's siblings in the General Motors stable — the GMC Yukon and Cadillac Escalade — will also get the two-mode system, though neither of those two were shown with the Tahoe in Detroit. GM says combined fuel economy savings are expected to be 25 percent. Pricing information has not been released.

Developed jointly by BMW, DaimlerChrysler and GM, the hybrid system can team with both gasoline and diesel engines.

Exterior
Compared to the regular Tahoe, distinguishing characteristics are minor. The 2008 Tahoe Hybrid rides 1 centimeter lower to the ground, which enhances the SUV's aerodynamics. Other modifications designed to help the Tahoe Hybrid slip more easily through the atmosphere include a revised D-pillar and flared ends for the running boards. The front fascia has a larger air intake.

The hood and liftgate are made of aluminum for weight savings, and the wheels are fitted with low-rolling-resistance tires. Hybrid badges are on the C-pillars, liftgate and trailer hitch cover.

Under the Hood
The two-mode hybrid powertrain teams with a V-8 engine that has GM's Active Fuel Management cylinder deactivation technology. The first mode, which allows the Tahoe Hybrid to move on electric power alone, engine power or a combination of the two, is designed for city and light-load driving. The second, mostly highway mode provides electric-power assist for the V-8, which can run on all cylinders or as a V-4 when the cylinder deactivation system is on.
source : car