Driving Downhill - GMC 1999 Envoy Owner's Manual

CAUTION:
Shifting the transfer case to NEUTRAL can
cause your vehicle to roll even if the transmission
is in PARK (P). This is because the NEUTRAL
position on the transfer case overrides the
transmission. You or someone else could be
injured. If you are going to leave your vehicle, set
the parking brake and shift the transmission to
PARK (P). But do not shift the transfer case to
the NEUTRAL position. Leave the transfer case
in a drive gear.

Driving Downhill

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When off roading takes you downhill, you'll want to
consider a number of things:
D
How steep is the downhill? Will I be able to maintain
vehicle control?
D
What's the surface like? Smooth? Rough? Slippery?
-
Hard packed dirt? Gravel?
D
Are there hidden surface obstacles? Ruts?
Logs? Boulders?
4-22
D
What's at the bottom of the hill? Is there a hidden
creek bank or even a river bottom with large rocks?
If you decide you can go down a hill safely, then try to
keep your vehicle headed straight down, and use a low
gear. This way, engine drag can help your brakes and
they won't have to do all the work. Descend slowly,
keeping your vehicle under control at all times.
CAUTION:
Heavy braking when going down a hill can cause
your brakes to overheat and fade. This could
cause loss of control and a serious accident.
Apply the brakes lightly when descending a hill
and use a low gear to keep vehicle speed
under control.
Q:
Are there some things I should not do when
driving down a hill?
A:
Yes! These are important because if you ignore
them you could lose control and have a
serious accident.
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