2009 Chevrolet Malibu Owner's Manual - Page 106

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. Automatic Transmission Operation (Six Speed Transmission) The automatic transmission has a shift lever located on the console between the seats. P (Park): This position locks the front wheels. It is the best position to use when you start the engine because the vehicle cannot move easily. 2-28