1993 Buick Roadmaster Owner's Manual - Page 188

'A If you CAUTION: Driving on steep hills or mountains different from is driving inflat or rolling terrain. . If you drive steep or regularly in country, if you're planning-tovisit there,here are some tips that can make your trips safer and more enjoyable. - - don't shift down, your brakes could get o hot that they wouldn't work well. You wou., ..len have poor braking or even none going down a hill. You could crash. Shift dowr tn Ifit ,our engine assist vnur brakes on a stec, downhill slope. -