GMC 1999 Jimmy Owner's Manual page 216

CAUTION:
Turning or driving across steep hills can be
dangerous. You could lose traction, slide
sideways, and possibly roll over. You could be
seriously injured or killed. When driving up hills,
always try to go straight up.
D
Ease up on your speed as you approach the top of
the hill.
D
Attach a flag to the vehicle to make you more visible
to approaching traffic on trails or hills.
D
Sound the horn as you approach the top of the hill to
let opposing traffic know you're there.
D
Use your headlamps even during the day. They make
you more visible to oncoming traffic.
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CAUTION:
Driving to the top (crest) of a hill at full speed can
cause an accident. There could be a drop
embankment, cliff, or even another vehicle. You
could be seriously injured or killed. As you near
the top of a hill, slow down and stay alert.
Q:
What should I do if my vehicle stalls, or is about
to stall, and I can't make it up the hill?
A:
If this happens, there are some things you should
do, and there are some things you must not do.
First, here's what you should do:
D
Push the brake pedal to stop the vehicle and keep it
from rolling backwards. Also, apply the parking brake.
D
If your engine is still running, shift the transmission
to REVERSE (R), release the parking brake, and
slowly back down the hill in REVERSE (R).
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