M (Manual Mode): This position lets drivers select the
range of gears appropriate for current driving conditions.
See Driver Shift Control (DSC) later in this section.
Notice: Spinning the tires or holding the vehicle in
one place on a hill using only the accelerator pedal
may damage the transmission. The repair will not be
covered by the vehicle warranty. If you are stuck, do
not spin the tires. When stopping on a hill, use the
brakes to hold the vehicle in place.
The vehicle has a shift stabilization feature that adjusts
the transmission shifting to the current driving conditions
in order to reduce rapid upshifts and downshifts. This shift
stabilization feature is designed to determine, before
making an upshift, if the engine will be able to maintain
vehicle speed by analyzing things such as vehicle speed,
throttle position and vehicle load. If the shift stabilization
feature determines that a current vehicle speed cannot be
maintained, the transmission does not upshift and instead
holds the current gear. In some cases, this may appear to
be a delayed shift, however the transmission is operating
normally. The vehicle’s transmission uses adaptive shift controls
that compares key shift parameters to pre-programmed
ideal shifts stored in the transmissions computer.
The transmission constantly makes adjustments to
improve vehicle performance according to how the
vehicle is being used, such as with a heavy load or when
temperature changes. During this adaptive shift controls
process, shifting may feel different as the transmission
determines the best settings.
When temperatures are very cold, the Hydra-Matic ®
6L80 automatic transmission’s gear shifting may
be delayed providing more stable shifts until the engine
warms up. Shifts may be more noticeable with a cold
transmission. This difference in shifting is normal.
2-31
When the System Does Not Seem to
Work Properly If the URPA system will not activate due to a temporary
condition, the message PARK ASSIST OFF will be
displayed on the DIC and a red light will be shown on
the rear URPA display when the shift lever is moved into
R (Reverse). This occurs under the following conditions:
The driver disables the system.
The ultrasonic sensors are not clean. Keep the
vehicle’s rear bumper free of mud, dirt, snow,
ice and slush. For cleaning instructions, see
Washing Your Vehicle on page 6-100 .
A trailer was attached to the vehicle, or a bicycle or
an object was hanging out of the liftgate during the
last drive cycle, the red light may illuminate in the
rear display. Once the attached object is removed,
URPA will return to normal operation.
A tow bar is attached to the vehicle.
The vehicle’s bumper is damaged. Take the vehicle
to your dealer/retailer to repair the system.
Other conditions may affect system performance,
such as vibrations from a jackhammer or the
compression of air brakes on a very large truck.
If the system is still disabled, after driving forward at least
15 mph (25 km/h), take the vehicle to your dealer/retailer. Side Blind Zone Alert (SBZA) The vehicle may have a Side Blind Zone Alert (SBZA)
system. Read this entire section before using the system.
The SBZA system operates on a radio frequency
subject to Federal Communications Commission (FCC)
Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-310 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
Frequency of operation: 24.05GHz – 24.25GHz
Field Strength: Not greater than 2.5V/m peak (0.25V/m
average) at a distance of 3m
2-44
Cruise Control
{ CAUTION: Cruise control can be dangerous where you cannot
drive safely at a steady speed. So, do not use the
cruise control on winding roads or in heavy traffic.
Cruise control can be dangerous on slippery roads.
On such roads, fast changes in tire traction can
cause excessive wheel slip, and you could lose
control. Do not use cruise control on slippery roads.
With cruise control, a speed of about 25 mph (40 km/h)
or more can be maintained without keeping your foot
on the accelerator. Cruise control does not work
at speeds below about 25 mph (40 km/h). When the brakes are applied, cruise control is turned off.
For vehicles with an Allison ®
or Hydra-Matic 6-speed
automatic transmission, see “Grade Braking and Cruise
Grade Braking (Allison Transmission) under Tow/Haul
Mode on page 2-33 for an explanation of how cruise
control interacts with the Range Selection Mode,
tow/haul and grade braking systems.
If the vehicle has StabiliTrak ®
, and the system begins
to limit wheel spin, cruise control will automatically
disengage. See StabiliTrak ®
System on page 5-6 .
When road conditions allow the cruise control to
be safely used again, it can be turned back on.
3-13
Resuming a Set Speed If the cruise control is set at a desired speed and
then the brakes are applied, this shuts off the cruise
control. But it does not need to be reset.
Once the vehicle speed reaches about 25 mph
(40 km/h) or more, press the +RES button on the
steering wheel. The vehicle returns to the previously
set speed and stays there.
Increasing Speed While Using Cruise
Control To increase the cruise speed while using cruise control:
Press and hold the +RES button on the steering
wheel until the desired speed is reached, then
release it.
To increase vehicle speed in small increments,
press the +RES button. Each time this is done,
the vehicle goes about 1 mph (1.6 km/h) faster. Reducing Speed While Using Cruise
Control To reduce the vehicle speed while using cruise control:
Press and hold the SET– button on the steering
wheel until the desired lower speed is reached,
then release it.
To slow down in very small amounts, press
the SET– button on the steering wheel brie y.
Each time this is done, the vehicle goes about
1 mph (1.6 km/h) slower.
Passing Another Vehicle While Using
Cruise Control Use the accelerator pedal to increase the vehicle speed.
When you take your foot off the pedal, the vehicle will
slow down to the previous set cruise speed.
3-15
Using Cruise Control on Hills How well the cruise control will work on hills depends
upon the vehicle speed, load, and the steepness of
the hills. When going up steep hills, you might have to
step on the accelerator pedal to maintain the vehicle’s
speed. When going downhill, you might have to brake
or shift to a lower gear to keep the vehicle’s speed
down. When the brakes are applied the cruise control
turns off.
Ending Cruise Control There are three ways to end cruise control:
Step lightly on the brake pedal.
Press the
[ button on the steering wheel.
Press the
I button on the steering wheel.
Erasing Speed Memory The cruise control set speed memory is erased when
the cruise control or the ignition is turned off. Exterior Lamps The exterior lamps control
is located on the instrument
panel to the left of the
steering wheel.
It controls the following systems:
Headlamps
Taillamps
Parking Lamps
License Plate Lamps
Instrument Panel Lights
3-16
Brake System Warning Light With the ignition on, the brake system warning light
comes on when the parking brake is set. If the vehicle
is driven with the parking brake engaged, a chime
sounds when the vehicle speed is greater than
3 mph (5 km/h).
The vehicle’s hydraulic brake system is divided into
two parts. If one part is not working, the other part
can still work and stop the vehicle. For good braking
both parts need to be working well.
If the warning light comes on and a chime sounds there
could be a brake problem. Have the brake system
inspected by your dealer/retailer.
This light can also come on due to low brake uid.
See Brakes on page 6-36 for more information. This light comes on brie y when the ignition is turned
to ON/RUN. If it does not, have it xed so it will be ready
to warn if there is a problem.
If the light comes on while driving, pull off the road and
stop carefully. The pedal could be harder to push or
could go closer to the oor. It can take longer to stop.
If the light is still on, have the vehicle towed for service.
See Towing Your Vehicle on page 5-40 .
{ CAUTION: The brake system might not be working properly if
the brake system warning light is on. Driving with
the brake system warning light on can lead to a
crash. If the light is still on after the vehicle has
been pulled off the road and carefully stopped,
have the vehicle towed for service.
United States
Canada
3-39