Page 157 of 865
WARNING!
The head restraints for all occupants must be prop-
erly installed and adjusted prior to operating the
vehicle or occupying a seat. Head restraints should
never be adjusted while the vehicle is in motion.
Driving a vehicle with the head restraints improperly
adjusted or removed could cause serious injury or
death in the event of a collision.
Front Head Restraints
To raise the head restraint pull upward on the head
restraint. To lower the head restraint, push the adjust-
ment button located on the base of the head restraint and
push downward on the head restraint.
To remove the head restraint, raise it up as far as it can go
then push the adjustment button and the release button
at the base of each post while pulling the head restraint
up. To reinstall the head restraint, put the head restraintposts into the holes then adjust it to the appropriate
height.
Adjustment Buttons
1 — Release Button
2 — Adjustment Button
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 155
Page 158 of 865

WARNING!
•A loose head restraint thrown forward in a colli-
sion or hard stop could cause serious injury or
death to occupants of the vehicle. Always securely
stow removed head restraints in a location outside
the occupant compartment.
• ALL the head restraints MUST be reinstalled in the
vehicle to properly protect the occupants. Follow
the re-installation instructions above prior to oper-
ating the vehicle or occupying a seat.
NOTE: Do not reposition the head restraint 180 degrees
to the incorrect position in an attempt to gain additional
clearance to the back of the head.
Rear Head Restraints
The rear seats are equipped with adjustable and remov-
able head restraints. To raise the head restraint, pull
upward on the head restraint. To lower the head restraint, push the adjustment button located on the base of the
head restraint and push downward on the head restraint.
To remove the head restraint, push the adjustment button
and the release button while pulling upward on the
whole assembly. To reinstall the head restraint, put the
head restraint posts into the holes and adjust it to the
appropriate height.
NOTE:
To remove outboard restraints, the rear seat
bottom must be folded up.
WARNING!
A loose head restraint thrown forward in a collision
or hard stop could cause serious injury or death to
occupants of the vehicle. Always securely stow re-
moved head restraints in a location outside the occu-
pant compartment.
156 UNDERSTANDING THE FEATURES OF YOUR VEHICLE
Page 313 of 865

•Air Suspension Payload Protection Telltale — If
Equipped This telltale will turn on to indicate that the
maximum payload may have been exceeded or
load leveling cannot be achieved at its current
ride height.
Protection Mode will automatically be selected in order
to “protect” the air suspension system, air suspension
adjustment is limited due to payload.
• Service Stop/Start System Telltale — If Equipped
This telltale will turn on to indicate that the
Stop/Start is Unavailable, service Stop/Start
system.
• Loose Fuel Filler Cap
This telltale will turn on to indicate that the fuel
filler cap may be loose.EVIC White Telltales
•Electronic Speed Control ON
This light will turn on when the electronic
speed control is ON. Refer to “Electronic Speed
Control” in “Understanding The Features Of
Your Vehicle” for further information.
• Electronic Speed Control SET
This light will turn on when the electronic
speed control is SET. Refer to “Electronic Speed
Control” in “Understanding The Features Of
Your Vehicle” for further information.
• Hill Descent Control – If equipped
This indicator will illuminate when Hill De-
scent Control (HDC) has been selected using
the Hill Descent Control Switch. Refer to “Elec-
tronic Brake Control” in “Starting And Operat-
ing” for further information.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 311
Page 341 of 865

WARNING!
If you continue operating the vehicle when the
Transmission Temperature Warning Light is illumi-
nated you could cause the fluid to boil over, come in
contact with hot engine or exhaust components and
cause a fire.
• Air Suspension Payload Protection Telltale — If
Equipped
This telltale will turn on to indicate that the
maximum payload may have been exceeded or
load leveling cannot be achieved at its current
ride height.
Protection Mode will automatically be selected in order
to “protect” the air suspension system, air suspension
adjustment is limited due to payload. •
Service Stop/Start System Telltale — If Equipped
This telltale will turn on to indicate that the
Stop/Start is Unavailable, service Stop/Start
system.
• Loose Fuel Filler Cap
This telltale will turn on to indicate that the fuel
filler cap may be loose.
DID White Telltales
•Electronic Speed Control Ready
This light will turn on when the electronic
speed control is ON. Refer to “Electronic Speed
Control” in “Understanding The Features Of
Your Vehicle” for further information.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 339
Page 648 of 865
Recommended Distribution Hitch Adjustment
Towing With 1500 Air Suspension
1. Set air suspension to normal ride height. No action isrequired if already in normal ride height.
NOTE: The vehicle must remain in the engine running
position while attaching a trailer for proper leveling of
the air suspension system.
2. Position the truck to be ready to connect to the trailer (do not connect the trailer).
3. Under radio suspension settings, turn on jack mode. Jack mode will be canceled and procedure must be
restarted if the vehicle is driven at speeds above 5mph
(8kph).
4. Measure the height of the top of the front wheel opening on the fender to ground, this is height H1. 5. Attach the trailer to the vehicle without the weight
distribution bars connected.
6. Measure the height of the top of the front wheel opening on the fender to ground, this is height H2.
Measuring Height (H)
646 STARTING AND OPERATING