GMC 2003 Envoy - Manual (Page 256)

When ott'Foacling tgJies you downhill, you'ii wani to
consider a nutnber ol things:
* How sleep is the downhill? Will I be able to mainlain
vehIcEe control?
* What's the surface like? Smooth? Rough? Slippery?
Hard-packed dirt? Gravel?
* Are there hicidan surtaca obstacles? Ruls? Logs?
Boufders?
* What's at the bottom ot ihg hill? Is there a hidden
creek bank or even a river boitam with large
racks?
If you decide you can go down a hNl safely, then Iry to
keep your ^^ehicle lieaded straight down, and use a
low gear, This way, engine drag can help your brakes
and they won't have to do all Ihe worli. Descend slowly,
keeping your vehicle under conifol at all times.
Driving Downhill
Heavy braking when going down a hill can
causa your brakes to overheat and fade. This
could cause loss of control and a serious
accident AppFy the brakes lightly when
descending a hilf and use a low gear to keep
vehicle speed under control.
Q; Are there some things \ should not do when
driving down a HilF?
A; Yes! These are imporiant becausa it yog ignore
Iherti ydu could lose control and have a serious
accident.
* Whan driving downhill avoid luftis that take you
across ihe Incline of the hill. A hill thal's not loo steep
to dnvQ down may be too steep to drive across. You
could roll over It you don't drive straight down,
• Never go downhill with the transmission m
NEUTRAL (N). This Is cailed "free-wheeling.*
Your brakes will have to do all the work and could
overheat and lade.
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