
Safety Chains
You should always attach chains between your
vehicle and your trailer. Cross the safety
chains under the tongue of the trailer so that the
tongue will not drop to the road if it becomes
separated from the hitch. Instructions about safety
chains may be provided by the hitch manufacturer
or by the trailer manufacturer. Follow the
manufacturer’s recommendation for attaching
safety chains and do not attach them to the
bumper. Always leave just enough slack so you
can turn with your rig. And, never allow safety
chains to drag on the ground.
Trailer Brakes
If you tow more than 1,000 lbs (450 kg), use trailer
brakes. Because your vehicle has anti-lock brakes,
don’t try to tap into your vehicle’s hydraulic brake
system. If you do, both brake systems won’t
work well, or at all.
Be sure to read and follow the instructions for the
trailer brakes so you’ll be able to install, adjust
and maintain them properly.
Driving with a Trailer
Towing a trailer requires a certain amount of
experience. Before setting out for the open road,
you’ll want to get to know your rig. Acquaint
yourself with the feel of handling and braking with
the added weight of the trailer. And always
keep in mind that the vehicle you are driving is
now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check all trailer hitch parts and
attachments, safety chains, electrical connector,
lamps, tires and mirror adjustment. If the trailer has
electric brakes, start your vehicle and trailer moving
and then apply the trailer brake controller by hand
to be sure the brakes are working. This lets you
check your electrical connection at the same time.
During your trip, check occasionally to be sure
that the load is secure, and that the lamps and any
trailer brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead
as you would when driving your vehicle without
a trailer. This can help you avoid situations
that require heavy braking and sudden turns.
378

Fuses Usage
FRT/WSW Front Windshield Wiper
SPARE Spare
HTD/SEAT Front Heated Seats
STR/WHL/
ILLUMSteering Wheel Illumination
MSM Memory Seat Module
PWR/MIRRORS Power Mirrors
DR/LCK Door Locks
AIRBAG Airbag System
LT/TRN/SIG Driver’s Side Turn Signal
REAR WIPER Rear Window Wiper
PWR MODPassKey Module, Body Control
Module
BCK/UP/STOP Back-up Lamps, Stoplamps
HVAC Climate Control System
DISPLAY Display
RT/TRN/SIG Passenger’s Side Turn Signal
Fuse Side
491

Fuses Usage
DRL* Daytime Running Lamps
RADIO Radio
PDM Power Mirrors, Liftgate Release
DRL 2** Daytime Running Lamps 2
INFOTAINMENT Infotainment System
BCM Body Control Module
SPARE Spare
CTSY Dome Lamps
INADV/
PWR/LEDInterior Lamps
ONSTR/VENT Emissions
AMP Audio Ampli er
Harness
ConnectorUsage
BODY Harness Connector
Relay Side
492

Fuses Usage
LT PRK Left Parking Lamp
RT PRK Right Parking Lamp
TRLR PRK
LAMPTrailer Parking Lamps
AIRBAG Airbag System
PCM IGN Powertrain Control Module Ignition
AFS Adaptive Forward Lighting System
TRANS Transmission
REAR
CAMERARear Camera
EMISSION 1 Anti-lock Brakes System 2
TRLR BRK Trailer Brake
AWD All-Wheel-Drive System
TRLR PWR Trailer Power
EVEN COILS Even Injector Coils
RR HVAC Rear Climate Control System
SPARE Spare
ODD COILS Odd Injector Coils
SPARE Spare
LT HI BEAM Left High-Beam Headlamp
SPARE Spare
LT TRLR
STOP/TRNTrailer Left Stoplamp and Turn
Signal
EMISSION 2 Emission 2Fuses Usage
ECM Engine Control Module
RT HI BEAM Right High-Beam Headlamp
RVC SNSR Regulated Voltage Control Sensor
RT TRLR
STOP/TRNTrailer Right Stoplamp and Turn
Signal
ECM 1 Engine Control Module 1
SPARE Spare
WPR/WSW Windshield Wiper/Washer
SPARE Spare
PWR OUTLET Power Outlet
AUX POWER Auxiliary Power
RT LO BEAM Right Low-Beam Headlamp
RR APO Rear Accessory Power Outlet
LT LO BEAM Left Low-Beam Headlamp
TCM Transmission Control Module
TRLR BCK/UP Trailer Back-up Lamps
HTD MIR Heated Outside Rearview Mirror
ABS MTR Anti-lock Brake System Motor
FOG LAMP Fog Lamps
HORN Horn
A/C CLTCH Air Conditioning Clutch
FUEL PUMP Fuel Pump
SPARE Spare
495

Maintenance Schedule (cont.)
Maintenance Record................................ 514
Maintenance Requirements...................... 500
Normal Maintenance Replacement Parts ... 512
Owner Checks and Services.................... 507
Recommended Fluids and Lubricants....... 511
Scheduled Maintenance........................... 502
Using....................................................... 501
Your Vehicle and the Environment............ 500
Malfunction Indicator Light........................... 226
Manual Lumbar Controls............................... 11
Manual Seats.................................................. 9
Memory Seat and Mirrors.............................. 13
Message
DIC Warnings and Messages................... 244
Mirrors
Automatic Dimming Rearview with
OnStar
®and Compass......................... 140
Manual Rearview Mirror with OnStar®...... 140
Outside Convex Mirror............................. 144
Outside Heated Mirrors............................ 145
Outside Power Foldaway Mirrors.............. 143
Outside Power Mirrors............................. 142
MP3 ...................................................295, 301
MyGMLink.com............................................ 521
N
Navigation System, Privacy ......................... 538
Navigation/Radio System,
see Navigation Manual............................. 311
New Vehicle Break-In.................................. 123
Normal Maintenance Replacement Parts..... 512
O
Odometer.................................................... 216
Off-Road Recovery...................................... 342
Oil
Engine..................................................... 397
Pressure Light.......................................... 229
Oil, Engine Oil Life System ......................... 400
Older Children, Restraints............................. 48
Online Owner Center................................... 521
OnStar, Privacy........................................... 538
OnStar
®System, see OnStar®Manual........ 145
Operation, Universal Home
Remote System..............................150, 154
Orange Covered Wiring............................... 489
Other Warning Devices................................ 173
Outlet Adjustment........................................ 210
548

Outlets
Accessory Power..................................... 197
Outside
Convex Mirror.......................................... 144
Heated Mirrors......................................... 145
Power Foldaway Mirrors........................... 143
Power Mirrors.......................................... 142
Overheated Engine Protection
Operating Mode....................................... 412
Owner Checks and Services....................... 507
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 486
Parade Dimming.......................................... 188
Park Aid...................................................... 194
Park (P)
Shifting Into............................................. 135
Shifting Out of......................................... 137
Parking
Assist....................................................... 194
Brake....................................................... 134
Over Things That Burn............................ 137Passenger Airbag Status Indicator............... 218
Passenger Sensing System........................... 85
Passing....................................................... 342
PASS-Key
®III+........................................... 120
PASS-Key®III+ Operation........................... 121
Power
Door Locks.............................................. 107
Electrical System..................................... 490
Liftgate..................................................... 110
Lumbar Controls........................................ 12
Outlet 115 Volt Alternating Current ........... 198
Retained Accessory (RAP)....................... 125
Seat.......................................................... 10
Steering Fluid.......................................... 419
Tilt Wheel and Telescopic
Steering Column................................... 174
Windows.................................................. 115
Pretensioners, Safety Belt............................. 47
Privacy........................................................ 536
Event Data Recorders.............................. 537
Navigation System................................... 538
OnStar..................................................... 538
Radio Frequency Identi cation.................. 538
Programmable Automatic Door Locks.......... 107
549