2011 Chevrolet Avalanche Owner's Manual - Page 310

9-42 Driving and Operating Grade Braking is not available when the Range Selection Mode is active. See Tow/Haul Mode on page 9‑42 for more information. While using the Range Selection Mode, Cruise Control and the Tow/ Haul Mode can be used. Press the button located on the end of the shift lever to turn the tow/haul on or off. While the tow/haul is on, a light on the instrument panel cluster comes on. See Tow/Haul Mode Light on page 5‑23 for more information. Also see "Tow Haul Mode" under Towing Equipment on page 9‑79 for more information. When in M (Manual Mode) a number displays next to the M, indicating the current gear that has been selected. The number displayed in the gear indicator is the highest gear that can be used. However, the vehicle can automatically shift to lower gears as it adjusts to driving conditions. This means that all gears below that number are available. When 5 (Fifth) is selected, 1 (First) through 5 (Fifth) gears are automatically shifted by the vehicle, but 6 (Sixth) cannot be used until the plus/minus button located on the steering column lever is used to change to the gear. Range Selection Mode controls the vehicle and engine speed while driving down a hill or towing a trailer, by allowing you to select a desired range of gears. Tow/Haul Mode Grade Braking The Grade Braking shift modes can be activated by pressing the button on the end of the shift control lever. While in Range Selection Mode, Grade Braking is deactivated allowing the driver to select a desired range of gears. The vehicle has a Tow/Haul Mode. The Tow/Haul Mode adjusts the transmission shift pattern to reduce shift cycling, providing increased performance, vehicle control, and transmission cooling while towing or hauling heavy loads.