
At the entrance, there is usually a ramp that leads to the
freeway. If you have a clear view of the freeway as you
drive along the entrance ramp, you should begin to check
traffic. Try to determine where you expect to blend with
the ow. Try to merge into the gap at close to the
prevailing speed. Switch on your turn signal, check your
mirrors, and glance over your shoulder as often as
necessary. Try to blend smoothly with the traffic ow.
Once you are on the freeway, adjust your speed to the
posted limit or to the prevailing rate if it is slower.
Stay in the right lane unless you want to pass.
Before changing lanes, check your mirrors. Then use
your turn signal.
Just before you leave the lane, glance quickly over your
shoulder to make sure there is not another vehicle in
your blind spot.Once you are moving on the freeway, make certain you
allow a reasonable following distance. Expect to
move slightly slower at night.
When you want to leave the freeway, move to the
proper lane well in advance. If you miss your exit, do
not, under any circumstances, stop and back up. Drive
on to the next exit.
The exit ramp can be curved, sometimes quite sharply.
The exit speed is usually posted.
Reduce your speed according to your speedometer, not
to your sense of motion. After driving for any distance
at higher speeds, you may tend to think you are
going slower than you actually are.
4-37

What can you do about highway hypnosis? First, be
aware that it can happen.
Then here are some tips:
Make sure your vehicle is well ventilated, with a
comfortably cool interior.
Keep your eyes moving. Scan the road ahead and
to the sides. Check your mirrors and your
instruments frequently.
If you get sleepy, pull off the road into a rest,
service, or parking area and take a nap, get some
exercise, or both. For safety, treat drowsiness
on the highway as an emergency.
Hill and Mountain Roads
Driving on steep hills or mountains is different from
driving in at or rolling terrain.
4-39

Your trailer brake system can tap into the vehicle’s
hydraulic brake system only if:
The trailer parts can withstand 3,000 psi
(20 650 kPa) of pressure.
The trailer’s brake system will use less than
0.02 cubic inch (0.3 cc) of uid from your vehicle’s
master cylinder. Otherwise, both braking systems
won’t work well. You could even lose your brakes.
Your vehicle is not equipped with StabiliTrak®.
If everything checks out this far, make the brake tap at
the port on the master cylinder that sends the uid
to the rear brakes. But don’t use copper tubing for this.
If you do, it will bend and nally break off. Use steel
brake tubing.
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 thenapply 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.
Passing
You’ll need more passing distance up ahead when
you’re towing a trailer. And, because you’re a good deal
longer, you’ll need to go much farther beyond the
passed vehicle before you can return to your lane.
Backing Up
Hold the bottom of the steering wheel with one hand.
Then, to move the trailer to the left, just move that hand
to the left. To move the trailer to the right, move your
hand to the right. Always back up slowly and, if possible,
have someone guide you.
4-71

Fuses Usage
RR Wiper Rear Window Wiper Switch
SEO ACCYSpecial Equipment Option
Accessory
WS WPR Windshield Wipers
TBC ACCYTruck Body Controller
Accessory
Fuses Usage
IGN 3 Ignition, Heated Seats
4WD Four-Wheel Drive System
HTR A/C Climate Control System
LOCKPower Door Lock Relay
(Lock Function)
HVAC 1Inside Rearview Mirror,
Climate Control System
L DOORDriver’s Door Harness
Connection
CRUISE Cruise Control
UNLOCKPower Door Lock Relay
(Unlock Function)
RR FOG LP Rear Fog Lamp (Export Only)
BRAKE Anti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay
(Driver’s Door Unlock
Function)
IGN 0 PCM, TCM
TBC IGN 0 Truck Body Controller
VEH CHMSLVehicle and Trailer High
Mounted Stoplamp
5-105

Light (cont.)
Security.....................................................3-43
Tow/Haul Mode...........................................3-44
Traction Off................................................3-37
Lighting
Entry/Exit...................................................3-18
Loading Your Vehicle.......................................4-47
Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-11
Locks
Delayed Locking........................................... 2-9
Door........................................................... 2-8
Lockout Protection.......................................2-11
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-10
Loss of Control...............................................4-16
Low Fuel Warning Light...................................3-45
Luggage Carrier..............................................2-58
Lumbar
Power Controls............................................. 1-3
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month................................6-10
At Least Once a Year..................................6-10Maintenance Schedule (cont.)
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-16
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-15
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-13
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-40
Manual Passenger Seat.................................... 1-2
Memory Seat.................................................2-82
Message
DIC Warnings and Messages........................3-49
Midgate.........................................................2-11
Mirrors
Automatic Dimming Rearview with Compass
and Temperature Display...........................2-46
Automatic Dimming Rearview with OnStar
®,
Compass and Temperature Display.............2-43
Outside Automatic Dimming Mirror with Curb
View Assist.............................................2-51
Outside Camper-Type Mirrors........................2-48
Outside Convex Mirror.................................2-50
Outside Heated Mirrors................................2-50
Outside Power Mirrors..................................2-49
MyGMLink.com................................................ 7-3
8

N
Navigation/Radio System, see Navigation
Manual......................................................3-89
New Vehicle Break-In......................................2-26
Normal Maintenance Replacement Parts............6-15
O
Odometer......................................................3-31
Off-Road Recovery..........................................4-15
Oil
Engine.......................................................5-15
Pressure Gage............................................3-42
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-29
Online Owner Center........................................ 7-3
OnStar
®System, see OnStar®Manual...............2-51
Operating Your All-Wheel-Drive Vehicle Off
Paved Roads..............................................4-18
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-28
Outside
Automatic Dimming Mirror with Curb View
Assist.....................................................2-51
Camper-Type Mirrors....................................2-48
Convex Mirror.............................................2-50
Heated Mirrors............................................2-50
Power Mirrors.............................................2-49Overheated Engine Protection
Operating Mode..........................................5-30
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
P
Park (P)
Shifting Into................................................2-39
Shifting Out of............................................2-41
Parking
Brake........................................................2-38
Over Things That Burn.................................2-41
Passenger Airbag Status Indicator.....................3-32
Passenger Sensing System..............................1-60
Passing.........................................................4-15
Passlock
®......................................................2-26
Power
Accessory Outlets........................................3-19
Door Locks.................................................. 2-9
Electrical System.......................................5-104
Lumbar Controls........................................... 1-3
Retained Accessory (RAP)............................2-27
Seat............................................................ 1-2
Steering Fluid.............................................5-36
Windows....................................................2-23
Programmable Automatic Door Locks.................2-10
9

Q
Questions and Answers About Safety Belts.........1-13
R
Radios..........................................................3-64
Care of Your CD and DVD Player................3-104
Care of Your CDs and DVDs.......................3-104
Navigation/Radio System, see Navigation
Manual...................................................3-89
Radio with CD............................................3-65
Radio with Six-Disc CD................................3-76
Rear Seat Audio........................................3-101
Setting the Time..........................................3-65
Theft-Deterrent..........................................3-102
Understanding Reception............................3-103
Reading Lamps..............................................3-18
Rear Axle......................................................5-47
Locking......................................................4-10
Rear Door Security Locks................................2-10
Rear Safety Belt Comfort Guides......................1-26
Rear Seat Audio (RSA)..................................3-101
Rear Seat Entertainment System.......................3-90
Rear Seat Operation......................................... 1-7
Rear Seat Passengers, Safety Belts..................1-23
Rear Storage Area..........................................2-59Rearview Mirror, Automatic Dimming with
Compass and Temperature Display................2-46
Rearview Mirror, Automatic Dimming with
OnStar
®, Compass and Temperature Display . . . 2-43
Reclining Seatbacks.......................................... 1-5
Recommended Fluids and Lubricants.................6-13
Recovery Hooks.............................................4-46
Recreational Vehicle Towing.............................4-58
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing
the Spare Tire.............................................5-80
Removing the Spare Tire and Tools...................5-76
Replacement Bulbs.........................................5-58
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking the Restraint Systems....................1-65
Replacing Restraint System Parts
After a Crash..........................................1-66
Retained Accessory Power (RAP)......................2-27
Right Front Passenger Position, Safety Belts......1-22
Roadside
Assistance Program....................................... 7-5
Rocking Your Vehicle to Get it Out....................4-46
Running the Engine While Parked.....................2-42
10