2007 Buick Rainier Owner's Manual - Page 117

To shift to the SECOND (2) position, you must first press the large button on the shift handle. While the button is pressed, move the shifter in the SECOND (2) position. You can also use SECOND (2) for starting the vehicle from a stop on slippery road surfaces. FIRST (1): This position reduces vehicle speed even more than SECOND (2) without using your brakes. You can use it on very steep hills, or in deep snow or mud. If the shift lever is put in FIRST (1) while the vehicle is moving forward, the transmission will not shift into first gear until the vehicle is going slowly enough. To shift to the FIRST (1) position, you must first press the large button on the shift handle. While the button is pressed, move the shifter in the FIRST (1) position. Notice: Spinning the tires or holding the vehicle in one place on a hill using only the accelerator pedal may damage the transmission. The repair will not be covered by your warranty. If you are stuck, do not spin the tires. When stopping on a hill, use the brakes to hold the vehicle in place. 117