Page 681 of 865

HAZARD WARNING FLASHERS
The Hazard Warning flasher switch is located on the
upper switch bank just below the radio.Push the switch to turn on the Hazard Warning
flasher. When the switch is activated, all direc-
tional turn signals will flash on and off to warn oncoming
traffic of an emergency. Push the switch a second time to
turn off the Hazard Warning flashers.
This is an emergency warning system and it should not
be used when the vehicle is in motion. Use it when your
vehicle is disabled and it is creating a safety hazard for
other motorists.
When you must leave the vehicle to seek assistance, the
Hazard Warning flashers will continue to operate even
though the ignition is placed in the OFF position.
NOTE: With extended use the Hazard Warning flashers
may wear down your battery.
IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate action.
• On the highways — slow down.
• In city traffic — while stopped, place the transmission
in NEUTRAL, but do not increase the engine idle
speed while maintaining the motion of the vehicle
with the brakes.
NOTE: There are steps that you can take to slow down
an impending overheat condition:
• If your air conditioner (A/C) is on, turn it off. The A/C
system adds heat to the engine cooling system and
turning the A/C off can help remove this heat.
• You can also turn the temperature control to maximum
heat, the mode control to floor and the blower control
to high. This allows the heater core to act as a
supplement to the radiator and aids in removing heat
from the engine cooling system.
6
WHAT TO DO IN EMERGENCIES 679
Page 682 of 865

CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads HOT
(H), pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains on HOT (H), and you hear continuous
chimes, turn the engine off immediately and call for
service.
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If
you see or hear steam coming from under the hood,
do not open the hood until the radiator has had time
to cool. Never try to open a cooling system pressure
cap when the radiator or coolant bottle is hot.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to ensure
that the wheel is properly mounted to the vehicle. Any
time a wheel has been removed and reinstalled on the
vehicle the lug nuts/bolts should be torqued using a
properly calibrated torque wrench.
Torque Specifications
Lug Nut/BoltTorque Lug Nut/
Bolt
Type **Lug
Nut/Bolt Size Lug Nut/
Bolt
Socket Size
130 Ft-Lbs (176 N·m) Cone M14 x
1.5022 mm
140 Ft-Lbs (190 N·m) Flanged
680 WHAT TO DO IN EMERGENCIES
Page 683 of 865
**Use only your Authorized Dealer recommended lug
nuts/bolts and clean or remove any dirt or oil before
tightening.
NOTE:Dual wheels are flat mounted, center piloted.
The lug nuts are a two-piece assembly. When the tires are
being rotated or replaced, clean these lug nuts and add
two drops of oil at the interface between the lug nut/bolt
and the washer.
Do not oil wheel studs.
Inspect the wheel mounting surface prior to mounting
the tire and remove any corrosion or loose particles.
Two-Piece Lug Nut
6
WHAT TO DO IN EMERGENCIES 681
Page 684 of 865
Tighten the lug nuts/bolts in a star pattern until each
nut/bolt has been tightened twice.
After 25 miles (40 km) check the lug nut/bolt torque to be
sure that all the lug nuts/bolts are properly seated
against the wheel.WARNING!
To avoid the risk of forcing the vehicle off the jack,
do not tighten the lug nuts fully until the vehicle has
been lowered. Failure to follow this warning may
result in personal injury.
Wheel Mounting Surface4 And 5 Lug Nuts/Bolts Torque Pattern
682 WHAT TO DO IN EMERGENCIES
Page 685 of 865

JACKING AND TIRE CHANGING
Jacking And Tire Changing 1500 Series Trucks
WARNING!
•Do not attempt to change a tire on the side of the
vehicle close to moving traffic. Pull far enough off
the road to avoid the danger of being hit when
operating the jack or changing the wheel.
• Being under a jacked-up vehicle is dangerous. The
vehicle could slip off the jack and fall on you. You
could be crushed. Never put any part of your body
under a vehicle that is on a jack. If you need to get
under a raised vehicle, take it to a service center
where it can be raised on a lift.
• Never start or run the engine while the vehicle is
on a jack.
(Continued)
WARNING! (Continued)
•The jack is designed to be used as a tool for
changing tires only. The jack should not be used to
lift the vehicle for service purposes. The vehicle
should be jacked on a firm level surface only.
Avoid ice or slippery areas.
NOTE: If your vehicle is equipped with an air suspen-
sion system, there is a feature which allows the automatic
leveling to be disabled to assist with changing a tire.
If your vehicle is equipped with a touchscreen, this
feature can be activated through the Uconnect® system.
Refer to “Uconnect® Settings” in “Understanding Your
Instrument Panel” for further information.
6
WHAT TO DO IN EMERGENCIES 683
Page 686 of 865
If your vehicle is not equipped with a touchscreen, this
feature can be activated through the Electronic Vehicle
Information Center (EVIC) or Driver Information Display
(DID). Refer to “Electronic Vehicle Information Center
(EVIC)” or “Driver Information Display (DID)” in “Un-
derstanding Your Instrument Panel” for further informa-
tion.
Jack Location
The jack and jack tools are stored under the front
passenger seat.
Removal Of Jack And Tools (1500 Series)
To access the jack and jack tools you must remove the
plastic access cover, located on the side of the front
passengers seat. To remove the cover, pull the front part
of the cover (closest to the front of the seat) toward you
to release a locking tab. Once the front of the cover is
loose, slide the cover toward the front of the seat until it
is free from the seat frame.
Jack Access Cover
684 WHAT TO DO IN EMERGENCIES
Page 687 of 865
Remove the jack and tools by turning the wing bolt
counterclockwise, remove the wing bolt and then slide
the assembly out from under the seat.Release the tool bag straps from the jack and remove
tools from bag.
Jack And Tools (1500 Series)
Jack And Tool Bag
6
WHAT TO DO IN EMERGENCIES 685
Page 688 of 865
There are 2 ways to assemble the tools:
Assembled For Spare Tire Lowering/RaisingCAUTION!
•The wheel wrench can only be attached to exten-
sion 3.
• When attaching the tool to the winch mechanism
be sure the large flared end opening on extension 1
is positioned correctly over the winch mechanism
adjusting nut.
• Damage to the wheel wrench, extensions and
winch mechanism may occur from improper tool
assembly.
Assembled For Spare Tire Lowering/Raising
1 — Extension 1 3 — Extension 3
2 — Extension 2 4 — Wheel Wrench
686 WHAT TO DO IN EMERGENCIES