Vehicle Symbol Chart
Here are some additional symbols that may be found on
the vehicle and what they mean. For more information
on the symbol, refer to the index.
0:Adjustable Pedals
9:Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls or OnStar®
$: Brake System Warning Light
":Charging System
I:Cruise Control
B: Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.: Fuel Gage
+:Fuses
i: Headlamp High/Low-Beam Changer
j:LATCH System Child Restraints
*: Malfunction Indicator Lamp
::Oil Pressure
g:Outside Power Foldaway Mirrors
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
_: Tow/Haul Mode
F:Traction Control
M:Windshield Washer Fluid
v
A.Outlet Adjustment on page 4‑29.
B. Turn Signal/Multifunction Lever on page 4‑4.
C. Driver Information Center (DIC) Buttons. See Driver Information Center (DIC) on page 4‑51.
D. Hazard Warning Flashers on page 4‑3.
E. Instrument Panel Cluster on page 4‑30.
F. Shift Lever. See Automatic Transmission Operation
on page 3‑28. Tow/Haul Selector Button
(If Equipped). See Tow/Haul Modeon page 3‑34.
Range Selection Mode (Allison Transmission and
Hydra-Matic
®6‐Speed Button (If Equipped). See
Automatic Transmission Operation on page 3‑28.
G. Audio System(s) on page 4‑84.
H. Instrument Panel Storage on page 3‑76.
I. Integrated Trailer Brake Controller (If Equipped). See Towing a Trailer on page 5‑50.
J. Exterior Lamps on page 4‑10.
K. Hood Release on page 6‑15.
L. Parking Brake on page 3‑50.
M. Dome Lamp Override
on page 4‑15.Dome Lampson page 4‑14.Fog Lampson page 4‑13(If Equipped).
N. Cruise Control on page 4‑7.
O. Tilt Wheel on page 4‑3. P.
Horn on page 4‑3.
Q. Audio Steering Wheel Controls
on page 4‑145(If Equipped).
R. Automatic Transfer Case Control (If Equipped). See Four-Wheel Drive on page 3‑36.
S. Ashtray (If Equipped). See Ashtray(s) and
Cigarette Lighter on page 4‑18.
T. StabiliTrak
®Systemon page 5‑6(If Equipped).
Ultrasonic Rear Parking Assist (URPA)on
page 3‑60(If Equipped). Pedal Adjust Button
(If Equipped). See Adjustable Throttle and Brake
Pedal
on page 3‑26. Heated Windshield Washer
Fluid Button (If Equipped). Windshield Washeron
page 4‑6.
U. Accessory Power Outlet(s) on page 4‑17.
V. Climate Control System (With Heater Only)
on
page 4‑18or Climate Control System (With Air
Conditioning)on page 4‑20and Dual Automatic
Climate Control System on page 4‑22.
W. Power Take Off (PTO) Control (If Equipped). See Power Take Off (PTO) in the Duramax Diesel
Supplement Index.
X. Passenger Airbag Off Control (If Equipped). See Airbag Off Switch on page 2‑82.
Y. Glove Box on page 3‑75.
1-3
A.Outlet Adjustment on page 4‑29.
B. Turn Signal/Multifunction Lever on page 4‑4.
C. Instrument Panel Cluster on page 4‑30.
D. Hazard Warning Flashers
on page 4‑3.
E. Shift Lever. See Automatic Transmission Operation
on page 3‑28.
F. Tow/Haul Mode
on page 3‑34(If Equipped).
G. Driver Information Center (DIC) Buttons. See Driver Information Center (DIC) on page 4‑51.
H. Audio System(s) on page 4‑84.
I. Exterior Lamps on page 4‑10.
J. Integrated Trailer Brake Controller (If Equipped). See Towing a Trailer on page 5‑50.
K. Dome Lamp Override
on page 4‑15.Dome Lampson page 4‑14.
L. Automatic Transfer Case Control. (If Equipped). See Four-Wheel Drive on page 3‑36.
M. Hood Release on page 6‑15.
N. Parking Brake on page 3‑50. O.
Cruise Control on page 4‑7.
P. Tilt Wheel on page 4‑3.
Q. Horn on page 4‑3.
R. Audio Steering Wheel Controls on page 4‑145.
S. Climate Control System (With Heater Only)
on
page 4‑18or Climate Control System (With Air
Conditioning)on page 4‑20or Dual Automatic
Climate Control Systemon page 4‑22(If Equipped).
T. Accessory Power Outlet(s)
on page 4‑17.
Cigarette Lighter (If Equipped). See Ashtray(s) and
Cigarette Lighter
on page 4‑18.
U. StabiliTrak®Systemon page 5‑6(If Equipped).
Pedal Adjust Button (If Equipped). See Adjustable
Throttle and Brake Pedal
on page 3‑26. Ultrasonic
Rear Parking Assist (URPA)on page 3‑60(If Equipped). Heated Windshield Washer Fluid
Button (If Equipped). See Windshield Washeron
page 4‑6.
V. Passenger Airbag Off Control (If Equipped). See Airbag Off Switch on page 2‑82.
W. Glove Box on page 3‑75.
1-5
Windshield Wiper/Washer
8:Single wipe, turn to8, then release.
Several wipes, hold the band on
8longer.
9: Turns the windshield wipers off.
6:Turn the band up for more frequent wipes or down
for less frequent wipes.
6: Slow wipes.
?:Fast wipes.
L(Washer Fluid): Push the paddle at the top of the
lever to spray washer fluid on the windshield.
See Windshield Wipers
on page 4‑6andWindshield
Washer on page 4‑6.
Climate Controls
These systems control the heating, cooling, and
ventilation.
Climate Control System
(With Air Conditioning)
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
D. Air Conditioning E. Outside Air
F. Air Recirculation
G. Rear Window Defogger
1-19
Windshield Wipers
Turn the band with the wiper symbol to control the
windshield wipers.
8(Mist):Single wipe, turn to8, then release.
Several wipes, hold the band on
8longer.
9(Off): Turns the windshield wipers off.
6(Adjustable Interval Wipes): Turn the band up for
more frequent wipes or down for less frequent wipes.
6(Low Speed): Slow wipes.
?(High Speed): Fast wipes. Clear ice and snow from the wiper blades before using
them. If frozen to the windshield, carefully loosen or
thaw them. Damaged wiper blades should be replaced.
See
Windshield Wiper Blade Replacement
on
page 6‑63.
Heavy snow or ice can overload the wiper motor.
A circuit breaker will stop the motor until it cools down.
Windshield Washer
{WARNING:
In freezing weather, do not use your washer until
the windshield is warmed. Otherwise the washer
fluid can form ice on the windshield, blocking your
vision.
L(Washer Fluid): Push the paddle marked with
the windshield washer symbol at the top of the
multifunction lever, to spray washer fluid on the
windshield. The wipers clear the window and then
either stop or return to the preset speed.
4-6
TRAILER CONNECTED
On vehicles with the Integrated Trailer Brake
Control (ITBC) system, this message displays
briefly when a trailer with electric brakes is
first connected to the vehicle.
This message clears itself after several seconds. This
message also clears if you acknowledge it. After this
message clears, the TRAILER GAIN/OUTPUT display
appears in the DIC.
See“TRAILER GAIN/OUTPUT” underDIC Operation
and Displays (With DIC Buttons)
on page 4‑51or DIC
Operation and Displays (Without DIC Buttons)on
page 4‑58and “Integrated Trailer Brake Control
System” underTowing a Traileron page 5‑50for
more information.
TRANSMISSION HOT IDLE ENGINE
Notice: If you drive your vehicle while the
transmission fluid is overheating and the
transmission temperature warning is displayed on
the instrument panel cluster and/or DIC, you can
damage the transmission. This could lead to costly
repairs that would not be covered by your warranty.
Do not drive your vehicle with overheated
transmission fluid or while the transmission
temperature warning is displayed. This message displays and a chime may sound if the
transmission fluid in the vehicle gets hot. Driving with
the transmission fluid temperature high can cause
damage to the vehicle. Stop the vehicle and let it idle to
allow the transmission to cool. This message clears and
the chime stops when the fluid temperature reaches a
safe level.
TURN SIGNAL ON
This message displays and a chime may sound if a turn
signal is left on for 3/4 of a mile (1.2 km). Move the turn
signal/multifunction lever to the off position.
WASHER FLUID LOW ADD FLUID
This message displays when the windshield washer
fluid is low. Fill the windshield washer fluid reservoir as
soon as possible. See
Engine Compartment Overview
on page 6‑16for the location of the windshield washer
fluid reservoir. Also, see Windshield Washer Fluidon
page 6‑38for more information.
4-74
Hydroplaning
Hydroplaning is dangerous. Water can build up under
your vehicle's tires so they actually ride on the water.
This can happen if the road is wet enough and you are
going fast enough. When your vehicle is hydroplaning, it
has little or no contact with the road.
There is no hard and fast rule about hydroplaning.
The best advice is to slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather driving
tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping equipment in good shape.
.Keep the windshield washer fluid reservoir filled.
.Have good tires with proper tread depth. SeeTireson page 6‑64.
.Turn off cruise control.
Before Leaving on a Long Trip
To prepare your vehicle for a long trip, consider
having it serviced by your dealer/retailer before
departing. Things to check on your own include:
.Windshield Washer Fluid:
Reservoir full? Windows
clean —inside and outside?
.Wiper Blades: In good shape?
.Fuel, Engine Oil, Other Fluids: All levels checked?
.Lamps:Do they all work and are lenses clean?
.Tires:Are treads good? Are tires inflated to
recommended pressure?
.Weather and Maps: Safe to travel? Have
up-to-date maps?
Highway Hypnosis
Always be alert and pay attention to your surroundings
while driving. If you become tired or sleepy, find a safe
place to park your vehicle and rest.
Other driving tips include:
.Keep the vehicle well ventilated.
.Keep interior temperature cool.
.Keep your eyes moving —scan the road ahead
and to the sides.
.Check the rearview mirror and vehicle instruments
often.
5-24
Section 6 Service and Appearance Care
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Accessories and Modifications . . . . . . . . . . . . . . . . . . 6-4
California Proposition 65 Warning . . . . . . . . . . . . . . . 6-5
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Doing Your Own Service Work . . . . . . . . . . . . . . . . . . 6-5
Adding Equipment to the Outside of the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Fuel E85 (85% Ethanol) . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . 6-11
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Filling a Portable Fuel Container . . . . . . . . . . . . . . . 6-13 Checking Things Under the Hood
. . . . . . . . . . . . . . .6-14
Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Engine Compartment Overview . . . . . . . . . . . . . . . . 6-16
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . 6-21
Automatic Transmission Fluid (4-Speed Transmission) . . . . . . . . . . . . . . . . . . . . . 6-23
Automatic Transmission Fluid (6-Speed Transmission) . . . . . . . . . . . . . . . . . . . . . 6-26
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31
Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
Engine Fan Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37
Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37
Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . 6-38
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44
6-1