GMC Sierra Denali Classic 2007, Owner'S Manual, Page: 272 / 502

Q:
What should I do if my vehicle stalls,
or is about to stall, and I cannot 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 is what you
should do:
•
Push the brake pedal to stop the vehicle
and keep if from rolling backwards. Also, apply
the parking brake.
•
If the engine is still running, shift the
transmission to REVERSE (R), release the
parking brake, and slowly back down the
hill as straight as possible in REVERSE (R).
•
As you are backing down the hill, put your left
hand on the steering wheel at the 12 o’clock
position. This way, you will be able to tell if the
wheels are straight and maneuver as you
back down. It is best that you back down the
hill with the wheels straight rather than in
the left or right direction. Turning the wheel
too far to the left or right will increase the
possibility of a rollover.
Here are some things you must not do if you stall,
or are about to stall, when going up a hill.
•
Never attempt to prevent a stall by shifting
into NEUTRAL (N) to rev-up the engine
and regain forward momentum. This will
not work. Your vehicle will roll backwards very
quickly and you could go out of control.
Instead, apply the regular brake to stop the
vehicle. Then apply the parking brake. Shift to
REVERSE (R), release the parking brake,
and slowly back straight down.
•
Never attempt to turn around if you are about
to stall when going up a hill. If the hill is steep
enough to stall your vehicle, it is steep enough
to cause you to roll over if you turn around.
If you cannot make it up the hill, you must
back straight down the hill.
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