2007 GMC Savana Van Owner's Manual - Page 252

Hill and Mountain Roads If you drive regularly in steep country, or if you are planning to visit there, here are some tips that can make your trips safer and more enjoyable. • Keep your vehicle in good shape. Check all fluid levels and also the brakes, tires, cooling system, and transmission. These parts can work hard on mountain roads. {CAUTION: If you do not shift down, your brakes could get so hot that they would not work well. You would then have poor braking or even none going down a hill. You could crash. Shift down to let your engine assist your brakes on a steep downhill slope. Driving on steep hills or mountains is different from driving in flat or rolling terrain. 252