2004 Chevrolet Express Van Owner's Manual - Page 237
2004 Chevrolet Express Van Manual
Page 237 highlights
Tow/Haul Mode Tow/haul is designed to assist while your vehicle is pulling a large or heavy load or trailer. Tow/haul is most useful while pulling such a load in rolling terrain, in stop-and-go traffic, or when you need improved low-speed control, such as when parking. The purpose of the tow/haul mode is to: While activated, the indicator light on the instrument panel will be on. • Reduce the frequency and improve the predictability of transmission shifts, • provide the same solid shift feel when pulling a heavy load as when the vehicle is unloaded, and Tow/haul mode will turn off automatically when the ignition is turned off. See Tow/Haul Mode Light on page 3-41. Tow/haul is most effective when the vehicle and trailer combined weight is at least 75% of the vehicle's Gross Combined Weight Rating (GCWR). See "Weight of the Trailer" later in this section. Driving with tow/haul activated without a heavy load will cause reduced fuel economy and unpleasant engine and transmission driving characteristics, but will not cause damage. • improve control of vehicle speed while requiring less throttle pedal activity. Press this button located to the right of the steering wheel on the instrument panel to turn tow/haul mode on and off. 4-39