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Keys.............................................................. 91
Remote Keyless Entry System.................... 92
Remote Keyless Entry System Operation.... 93
Doors and Locks........................................ 101
Door Locks................................................ 101
Power Door Locks..................................... 102
Delayed Locking........................................ 102
Programmable Automatic Door Locks........ 102
Rear Door Security Locks......................... 103
Lockout Protection..................................... 103
Midgate
®................................................... 104
Tailgate..................................................... 114
Power Running Boards.............................. 114
Windows...................................................... 115
Power Windows........................................ 116
Sun Visors................................................ 117
Theft-Deterrent Systems............................. 117
Content Theft-Deterrent............................. 118
PASS-Key
®III+......................................... 120
PASS-Key®III+ Operation......................... 121Starting and Operating Your Vehicle......... 123
New Vehicle Break-In................................ 123
Ignition Positions....................................... 124
Retained Accessory Power (RAP)............. 125
Starting the Engine.................................... 126
Adjustable Throttle and Brake Pedal.......... 128
Engine Coolant Heater.............................. 128
Automatic Transmission Operation............. 129
Tow/Haul Mode......................................... 135
Parking Brake........................................... 136
Shifting Into Park (P) ................................. 138
Shifting Out of Park (P)............................. 140
Parking Over Things That Burn................. 140
Engine Exhaust......................................... 141
Running the Engine While Parked............. 142
Mirrors......................................................... 143
Automatic Dimming Rearview Mirror with
Intellibeam™, OnStar
®, Compass, and
Temperature Display.............................. 143
Automatic Dimming Rearview Mirror with
OnStar
®, Compass and Temperature
Display................................................... 145
Outside Power Foldaway Mirrors............... 149
Section 2 Features and Controls
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Page 106 of 580
To remove the rear glass do the following:
1. Fold the rear seats. SeeRear Seat Operation
on page 16for more information. The front
seats may have to be moved forward slightly
to allow the rear seats to fold completely.
Although the rear glass can be removed
without folding the rear seats, you will not be
able to access the rear glass storage
pocket. Be sure to fold the seats before
removing the rear glass.2. Squeeze and pull down the latch levers (A),
located near the upper corners of the rear
glass, to unlatch. Once unlatched, the
glass-catch release button (C) will catch the
rear glass and prevent it from falling forward.
3. While holding the rear glass in place, press
the glass-catch release button (C) and pull
the top of the rear glass toward you using the
grab handle(s) (B) located at the top of the
rear glass.
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4. With the rear glass tilted toward you, lift it out
from the lower window frame channel. Use
the grab handles to assist you in removing the
rear glass.5. Load the rear glass into the storage pocket in
the Midgate
®, guiding the lower edge of the
rear glass behind the three rear glass retaining
tabs (E).
Hold the rear glass at against the storage
pocket, with grab handles facing you, until the
next step.
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Lowering the Midgate®with the Rear
Glass in Place
The Midgate®can be lowered to allow the cargo
area of your vehicle to extend into the cab.
The rear glass can be either installed in its normal
position, or it can be removed and stored in the
rear glass storage pocket.
To lower the Midgate
®, do the following:
1. Fold the rear seats. The front seats might
have to be moved forward slightly to allow
the rear seats to fold. SeeRear Seat
Operation on page 16for more information.
2. Standing outside of the vehicle, hold the
Midgate
®securely so it does not fall
forward. Turn the Midgate®handle clockwise
and pull the Midgate®toward you.
Rear Glass in Normal Position
111
Page 114 of 580

Tailgate
Use the Remote Keyless Entry (RKE) transmitter
or power door lock switch to lock and unlock
the tailgate.
Open the tailgate by lifting up on its handle while
pulling the tailgate toward you.
To shut the tailgate, push it rmly upward until it
latches. Push and pull on the tailgate to be sure it
is latched securely.
Tailgate Removal
The tailgate is not to be removed. This may cause
damage to electrical connector resulting in loss
of lock/unlock and rear vision camera function.
Power Running Boards
Your vehicle may have power running boards.
The power running boards automatically extend
from beneath the vehicle on the side in which the
door has been opened. Once the door is closed,
the running boards will automatically move
back under the vehicle. The vehicle must not be
moving for the running boards to extend or retract.
The switch used to
disable the power
running boards is
located on the center
console below the
climate control system.
The running boards cannot be disabled in the
extended position.
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Page 123 of 580
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an
elaborate break-in. But it will perform better in
the long run if you follow these guidelines:
Keep your speed at 55 mph (88 km/h)
or less for the rst 500 miles (805 km).
Do not drive at any one constant speed,
fast or slow, for the rst 500 miles
(805 km). Do not make full-throttle starts.
Avoid downshifting to brake, or slow,
the vehicle.
Avoid making hard stops for the rst
200 miles (322 km) or so. During this time
your new brake linings are not yet
broken in. Hard stops with new linings can
mean premature wear and earlier
replacement. Follow this breaking-in
guideline every time you get new brake
linings.
Do not tow a trailer during break-in. See
Towing a Trailer on page 380for the
trailer towing capabilities of your vehicle
and more information.
Following break-in, engine speed and load can
be gradually increased.
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Page 128 of 580

Adjustable Throttle and Brake Pedal
Your vehicle has an adjustable throttle and
brake pedal that lets you change their positions.
This feature is designed for shorter drivers,
since the pedals can not move farther away from
the standard position, but can move toward
the driver for better pedal reach.
The feature will not operate when the vehicle is in
REVERSE (R) or while using the cruise control.
The switch used to adjust the pedals is located on
the center console below the climate control
system.
Press the right and left arrows to move the pedals
either closer or further from your body.Your vehicle has a memory function which allows
the pedals to be saved and recalled. See
Memory Seat, Mirrors, and Pedals on page 12for
more information.
Engine Coolant Heater
Your vehicle may have an engine coolant heater.
In very cold weather, 0°F (−18°C) or colder,
the engine coolant heater can help. You will get
easier starting and better fuel economy during
engine warm-up.
Usually, the coolant heater should be plugged in a
minimum of four hours prior to starting your
vehicle. At temperatures above 32°F (0°C), use of
the coolant heater is not required. Your vehicle
may also have an internal thermostat in the
plug end of the cord. This will prevent operation of
the engine coolant heater when the temperature
is at or above 0°F (−18°C) as noted on the cord.
128
Page 130 of 580

There are several different positions for the shift
lever.
PARK (P):This position locks your rear wheels.
It is the best position to use when you start your
engine because your vehicle cannot move easily.
When parked on a hill, especially when the vehicle
has a heavy load, you may notice an increase in the
effort to shift out of PARK (P). See Torque
Lock (Automatic Transmission) underShifting Into
Park (P) on page 138for more information.
{CAUTION:
It is dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P)
with the parking brake rmly set. Your
vehicle can roll.
Do not leave your vehicle when the engine
is running unless you have to. If you have
left the engine running, the vehicle can
move suddenly. You or others could be
injured. To be sure your vehicle will not
move, even when you are on fairly level
ground, always set your parking brake
and move the shift lever to PARK (P). See
Shifting Into Park (P) on page 138.Ifyou
are pulling a trailer, seeTowing a Trailer
on page 380.
130