2010 Chevrolet Malibu Owner's Manual - Page 139

I (Intermediate): This position is also used for normal driving. However, it reduces vehicle speed without using the brakes for slight downgrades where the vehicle would otherwise accelerate. If constant upshifting or downshifting occurs while driving up steep hills, this position can be used to prevent repetitive types of shifts. You might choose I (Intermediate) instead of D (Drive) when driving on hilly, winding roads and when towing a trailer, so that there is less shifting between gears. L (Low): This position gives you access to 4 (Fourth), 3 (Third), 2 (Second) and 1 (First) gear ranges. This provides more engine braking but lower fuel economy than D (Drive). You can use it on very steep hills, or in deep snow or mud. If the electronic range select is put in L (Low), the transmission will not shift into lower gears until the vehicle is going slow enough. Parking Brake To set the parking brake, push down the parking brake pedal with your left foot. If the ignition is on, the brake system warning light will come on. See Brake System Warning Light on page 4-31. To release the parking brake, hold the regular brake pedal down with your right foot. Push down momentarily on the parking brake pedal with your left foot until you feel the pedal release. If the parking brake is not released when you begin to drive, the brake system warning light comes on and a chime sounds as a warning that the parking brake is still on. 3-31