New for the 2009 model year, Jeep Grand Cherokee features a new
5.7-liter HEMI®, which provides better fuel economy, improved idle
quality and overall refinement. With 357 horsepower (266 kW) and 389
lb.-ft. (527 N•m) of torque, this new HEMI engine also delivers an
8.2 percent increase in horsepower and a 3.7 percent increase in
torque compared with the previous generation engine. The HEMI’s new
Variable Valve Timing (VVT) improves fuel economy in two ways.
First, it reduces the engine’s pumping work by closing the intake
valve later. Second, it increases the expansion process of the
combustion event, which allows more work to be transferred to the
crankshaft instead of being rejected out of the exhaust port as
heat. Essentially, VVT improves engine breathing, which improves
engine efficiency and power.
2009 Jeep Grand Cherokee customers also will benefit from the HEMI
engine’s fuel-saving Multi-displacement System (MDS), which
seamlessly shifts to smooth, high-fuel-economy four-cylinder mode
when less power is needed, and back to V-8 mode when more power is
in demand. The MDS system optimizes fuel economy when V-8 power is
not required, without sacrificing vehicle performance or capability.
In addition to the new 5.7-liter HEMI® engine, the 2009 Jeep Grand
Cherokee also features new customer amenities.
A new Leather Appearance Group is standard on 2009 Jeep Grand
Cherokee Limited and Overland models. The package includes leather
wrap on the upper front- and rear-door bolsters, front-door
armrests, the center console armrest/lid, instrument panel cluster
brow, as well as the two-piece shift knob.
The 2009 Grand Cherokee Laredo model features a standard soft-touch
center armrest cover, leather-wrapped park brake handle, floor mats,
interior chrome door handles and audio control buttons.
The vehicle’s instrument panel has been upgraded to include
modifications to Laredo model Tire Pressure Monitoring (TPM)
warnings in the Electronic Vehicle Information Center.