2007 Chevrolet Tahoe Owner's Manual - Page 148

SECOND (2): This position reduces vehicle speed even more than THIRD (3) without using your brakes. You can use SECOND (2) on hills. It can help control your speed as you go down steep mountain roads, but then you would also want to use your brakes off and on. If you select SECOND (2) and the Tow/Haul has not been selected, the transmission will drive in SECOND (2) gear. You may use this feature for reducing the speed of the rear wheels when you are trying to start your vehicle from a stop on slippery road surfaces. If you select SECOND (2) and the Tow/Haul has also been selected, the transmission operation will be limited to FIRST (1) and SECOND (2) gears. You may use this feature for reducing the speed of the rear wheels when you are trying to start your 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. 148 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. When temperatures are very cold, the Hydra-Matic® Automatic Transmission's gear shifting may be delayed providing more stable shifts until the engine warms up. Shifts may be more noticeable with a cold transmission. This difference in shifting is normal. The transmission torque converter clutch operation is restricted during cold operation. When the startup transmission temperature is approximately 64°F (18°C) your torque converter clutch will temporarily not operate. Once the transmission temperature rises above 68°F (20°C), normal operation will resume.