GMC 2003 GMT560 T-Series, Owner'S Manual, Page: 142 / 284

Hill and Mountain Roads
Driving on steep hills or mountains is different from
driving in flat or rolling terrain.
Here are some tips that can make your drive through
steep country safer:
•
Keep the 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.
•
Know how to go down hills. The most important
thing to know is this: let your engine do some of
the slowing down. Shift to a lower gear when you go
down a steep or long hill.
{
CAUTION:
If you don’t shift down, your brakes could get
so hot that they wouldn’t 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.
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