
You should take any messages that appear on thedisplay seriously and remember that clearing themessages will only make the messages disappear,not correct the problem.
The following are the possible messages that can bedisplayed and some information about them.
BATTERY LOW START VEHICLE
When the vehicle’s battery is severely discharged, thismessage will display and four chimes will sound. Startthe vehicle immediately. If the vehicle is not started andthe battery continues to discharge, the climate controls,heated seats, and audio systems will shut off and thevehicle may require a jump start. These systems willfunction again after the vehicle is started.
CHANGE ENGINE OIL SOON
This message displays when the engine oil needs to bechanged. When you change the engine oil, be sure toreset the CHANGE ENGINE OIL SOON message. SeeEngine Oil Life Systemon page 7!20for informationon how to reset the message. SeeEngine Oilonpage 7!17andScheduled Maintenanceo n p a g e 8!3for more information.
DRIVER DOOR OPEN
This message displays and a chime sounds if the driverdoor is not fully closed and the vehicle is shifted out ofP (Park). Stop and turn off the vehicle, check the doorfor obstructions, and close the door again. Check to seeif the message still appears on the DIC.
ENGINE HOT A/C (Air Conditioning)
TURNED OFF
This message displays when the engine coolantbecomes hotter than the normal operating temperature.SeeEngine Coolant Temperature Gageon page 4!35.To avoid added strain on a hot engine, the airconditioning compressor automatically turns off.When the coolant temperature returns to normal,the air conditioning compressor turns back on. You cancontinue to drive your vehicle.
If this message continues to appear, have the systemrepaired by your dealer/retailer as soon as possible toavoid damage to the engine.
ENGINE OIL HOT IDLE ENGINE
This message displays when the engine oil becomeshotter than the normal operating temperature. Stop andallow the vehicle to idle until it cools down. SeeEngineCoolant Temperature Gageon page 4!35.
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If the system fails to turn on or activate, the StabiliTraklight along with one of the following messages will bedisplayed on the Driver Information Center (DIC):TRACTION CONTROL OFF, SERVICE TRACTIONCONTROL, STABILITRAK OFF, SERVICESTABILITRAK. If these DIC messages appear, makesure the StabiliTrak system has not been turned offusing the StabiliTrak on/off button. Then turn thesteering wheel clockwise from the nine o'clock positionto the three o'clock position. If this clears themessage(s), the vehicle does not need servicing.If this does not clear the message(s), then turn thevehicle off, wait 15 seconds, and then turn it back onagain to reset the system. If any of these messagesstill appear on the Driver Information Center (DIC), thevehicle should be taken in for service. For moreinformation on the DIC messages, seeDriverInformation Center (DIC) on page 4!41.
The StabiliTrak light willflash on the instrumentpanel cluster when thesystem is both onand activated.
The system may be heard or felt while it is working; thisis normal.
The traction controldisable button is locatedon the instrument panelbelow the climatecontrols.
The traction control part of StabiliTrak can be turnedoff by pressing and releasing the StabiliTrak button ifboth systems (traction control and StabiliTrak) werepreviously on. To disable both traction control andStabiliTrak, press and hold the button for five seconds.
Traction control and StabiliTrak can be turned on bypressing and releasing the StabiliTrak button if notautomatically shut off for any other reason.
When the TCS or StabiliTrak system is turned off,the StabiliTrak light and the appropriate TCS off orStabiliTrak off message will be displayed on the DIC towarn the driver. The vehicle will still have brake-tractioncontrol when traction control is off, but will not be ableto use the engine speed management system. See“Traction Control Operation”next for more information.
When the traction control system has been turned off,system noises may still be heard as a result of thebrake-traction control coming on.
6-7

{WARNING:
Snow can trap engine exhaust under the vehicle.
This may cause exhaust gases to get inside.
Engine exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in the snow:
.Clear away snow from around the base of
your vehicle, especially any that is blocking
the exhaust pipe.
.Check again from time to time to be sure
snow does not collect there.
.Open a window about 5 cm (two inches) on
the side of the vehicle that is away from the
wind to bring in fresh air.
.Fully open the air outlets on or under the
instrument panel.
.Adjust the Climate Control system to a setting
that circulates the air inside the vehicle and
set the fan speed to the highest setting.
See Climate Control System in the Index.
(Continued)
WARNING: (Continued)
For more information about carbon monoxide, see
Engine Exhaust on page 3!41.
Snow can trap exhaust gases under your vehicle.
This can cause deadly CO (carbon monoxide) gas
to get inside. CO could overcome you and kill you.
You cannot see it or smell it, so you might not
know it is in your vehicle. Clear away snow from
around the base of your vehicle, especially any
that is blocking the exhaust.
Run the engine for short periods only as needed tokeep warm, but be careful.
To save fuel, run the engine for only short periods asneeded to warm the vehicle and then shut the engineoff and close the window most of the way to save heat.Repeat this until help arrives but only when you feelreally uncomfortable from the cold. Moving about tokeep warm also helps.
If it takes some time for help to arrive, now and thenwhen you run the engine, push the accelerator pedalslightly so the engine runs faster than the idle speed.This keeps the battery charged to restart the vehicleand to signal for help with the headlamps. Do this aslittle as possible to save fuel.
6-29

Trailer Brakes
A loaded trailer that weighs more than 2,000 lbs(900 kg) needs to have its own brake system that isadequate for the weight of the trailer. Be sure to readand follow the instructions for the trailer brakes so theyare installed, adjusted and maintained properly.
Since the vehicle is equipped with StabiliTrak®, thetrailer brakes cannot tap into the vehicle's hydraulicsystem.
Driving with a Trailer
{WARNING:
When towing a trailer, exhaust gases may collect
at the rear of the vehicle and enter if the liftgate,
trunk/hatch, or rear-most window is open.
Engine exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can cause
unconsciousness and even death.
To maximize safety when towing a trailer:
.Have the exhaust system inspected for
leaks and make necessary repairs before
starting a trip.
(Continued)
WARNING: (Continued)
.Never drive with the liftgate, trunk/hatch,
or rear-most window open.
.Fully open the air outlets on or under the
instrument panel.
.Adjust the Climate Control system to a setting
that brings in only outside air and set the fan
speed to the highest setting. See Climate
Control System in the Index.
For more information about carbon monoxide, see
Engine Exhaust on page 3!41.
Towing a trailer requires a certain amount ofexperience. The combination you are driving is longerand not as responsive as the vehicle itself. Getacquainted with the handling and braking of the rigbefore setting out for the open road.
Before starting, check all trailer hitch parts andattachments, safety chains, electrical connectors,lamps, tires and mirrors. If the trailer has electricbrakes, start the combination moving and then applythe trailer brake controller by hand to be sure thebrakes work.
6-50

Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA
Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use spare
tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart significantly from the
norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction–AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the
tire's ability to stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
7-76

Instrument Panel Fuse Block
The instrument panel fuse block access door is locatedon the driver side edge of the instrument panel.
FusesUsage
1Rear Seats
2Rear Accessory Power Outlet
3Steering Wheel Controls Backlight
FusesUsage
4Driver Door Module
5Dome Lamps, Driver Side Turn Signal
6Driver Side Turn Signal, Stoplamp
7Instrument Panel Back Lighting
8Passenger Side Turn Signal,Stoplamp
9Universal Home Remote
10Power Door Lock 2 (Unlock Feature)
11Power Door Lock 2 (Lock Feature)
12Stoplamps, Center-High MountedStoplamp
13Rear Climate Controls
14Not Used
15Body Control Module (BCM)
16Accessory Power Outlets
17Interior Lamps
18Power Door Lock 1 (Unlock Feature)
19Rear Seat Entertainment
7-109

FusesUsage
17Air Conditioning Compressor
18Oxygen Sensors
19Transmission Controls (Ignition)
20Fuel Pump
21Fuel System Control Module
22Headlamp Washer
23Rear Windshield Washer
24Fuel Injectors, Ignition Coils(Left Side)
25Trailer Park Lamps
26Driver Side Park Lamps
27Passenger Side Park Lamps
28Fog Lamps
29Horn
30Passenger Side High-BeamHeadlamp
31Daytime Running Lamps (DRL)
32Driver Side High-Beam Headlamp
33Daytime Running Lamps 2
34Sunroof
FusesUsage
35Key Ignition System, Theft DeterrentSystem
36Windshield Wiper
37SEO B2 Upfitter Usage (Battery)
38Electric Adjustable Pedals
39Climate Controls (Battery)
40Airbag System (Ignition)
41Amplifier
42Audio System
43Miscellaneous (Ignition), CruiseControl
44Liftgate Release
45Airbag System (Battery)
46Instrument Panel Cluster
47Not Used
48Auxiliary Climate Control (Ignition)
49Center High-Mounted Stoplamp(CHMSL)
50Rear Defogger
51Heated Mirrors
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FusesUsage
52SEO B1 Upfitter Usage (Battery)
53Cigarette Lighter, Auxiliary PowerOutlet
54Automatic Level Control CompressorRelay
55Climate Controls (Ignition)
56Engine Control Module, SecondaryFuel Pump (Ignition)
J-Case FusesUsage
57Cooling Fan 1
58Automatic Level Control Compressor
59Heavy Duty Antilock Braking System
60Cooling Fan 2
61Antilock Brake System 1
62Starter
63Stud 2 (Trailer Brakes)
64Left Bussed Electrical Center 1
65Electric Running Boards
66Heated Windshield Washer System
67Transfer Case
J-Case FusesUsage
68Stud 1 (Trailer Connector BatteryPower)
69Mid-Bussed Electrical Center 1
70Climate Control Blower
71Power Liftgate Module
72Left Bussed Electrical Center 2
RelaysUsage
FAN HICooling Fan High Speed
FAN LOCooling Fan Low Speed
FAN CNTRL Cooling Fan Control
HDLP LO/HID Low-Beam Headlamp
FOG LAMPFront Fog Lamps
A/C CMPRSR Air Conditioning Compressor
STRTRStarter
PWR/TRNPowertrain
FUEL PMPFuel Pump
PRK LAMPParking Lamps
REAR DEFOG Rear Defogger
RUN/CRANK Switched Power
7-114