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Black plate (51,1)
GMC Sierra Owner Manual - 2011
Driving and Operating
9-51
Grade Braking is only active while
the Tow/Haul Mode is selected and
you are not in the Range Selection
Mode. See
“
Tow/Haul Mode
”
listed
previously and
Manual Mode on
page 9
‑
48
for more information on
the Range Selection Mode. Grade
Braking assists in maintaining
desired vehicle speeds when driving
on downhill grades by automatically
implementing a shift schedule that
utilizes the engine and transmission
to slow the vehicle. This reduces
wear on the braking system and
increases control of the vehicle.
Grade Braking monitors vehicle
speed, acceleration, engine torque
and brake pedal usage. Using this
information, it detects when the
truck is on a downhill grade and the
driver desires to slow the vehicle by
pressing the brake.
This feature is active when the
exhaust brake is enabled
(if equipped).
Also see
Towing Equipment on
page 9
‑
107
for more information.
Cruise Grade Braking (Allison
Transmission or Hydra-Matic
6-Speed Automatic
Transmission)
Cruise Grade Braking assists when
driving on a downhill grade.
It maintains vehicle speed by
automatically implementing a shift
schedule that uses the engine and
the transmission to slow the vehicle.
Cruise Grade Braking operates
while Cruise Control is engaged in
Tow/Haul Mode to assist in
maintaining vehicle speed under
loaded vehicle conditions. It utilizes
vehicle acceleration and deviation
from desired speed to determine the
correct gear for the operating
condition. If vehicle speed is above
the desired speed the transmission
will downshift to slow the vehicle.
If vehicle speed is near or below
desired speed the trans will upshift,
allowing vehicle speed to increase.
While in the Range Selection Mode,
Cruise Grade Braking is not
available.
This feature is active when the
exhaust brake is enabled
(if equipped).
See
“
Range Selection Mode
”
under
Manual Mode on page 9
‑
48
.
Содержание 2011 GMC Sierra
Страница 11: ...Black plate 5 1 GMC Sierra Owner Manual 2011 In Brief 1 5 2 NOTES I n f o r ma t i o nP r o v i d e db y...
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Страница 140: ...Black plate 76 1 GMC Sierra Owner Manual 2011 3 76 Seats and Restraints 2 NOTES I n f o r ma t i o nP r o v i d e db y...
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