
Here are some things you can check before a trip:
Windshield Washer Fluid:Is the reservoir
full? Are all windows clean inside and outside?
Wiper Blades:Are they in good shape?
Fuel, Engine Oil, Other Fluids:Have you
checked all levels?
Lamps:Are they all working? Are the
lenses clean?
Tires:They are vitally important to a safe,
trouble-free trip. Is the tread good enough
for long-distance driving? Are the tires
all in ated to the recommended pressure?
Weather Forecasts:What is the weather
outlook along your route? Should you
delay your trip a short time to avoid a major
storm system?
Maps:Do you have up-to-date maps?
Highway Hypnosis
Is there actually such a condition as highway
hypnosis? Or is it just plain falling asleep at the
wheel? Call it highway hypnosis, lack of
awareness, or whatever.
There is something about an easy stretch of road
with the same scenery, along with the hum of the
tires on the road, the drone of the engine, and the
rush of the wind against the vehicle that can make
you sleepy. Do not let it happen to you! If it does,
your vehicle can leave the road in less than a
second, and you could crash and be injured.
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.
277

Your trailer’s 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.
If everything checks out this far, then make the
brake uid tap at the port on the master cylinder
that sends 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 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.
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.
308

Fuses Usage
RT HDLP Passenger’s Side Headlamp
LT HDLP Driver’s Side Headlamp
AUX PWR 2 Accessory Power 2
FOG/LAMP Fog Lamps (If Equipped)
A/C CMPRSR Air Conditioning Compressor
WSW Wiper/Washer Switch
RVC Regulated Voltage Control
PWR/WNDW Power Windows (If Equipped)
FUEL/PUMP Fuel Pump
STRTR Starter Solenoid Relay
WPR Wiper
ABS 2Anti-lock Brake System 2
(ABS Pump)
DR/LCK Power Door Locks (If Equipped)
ETC Electronic Throttle Control (ETC)
02 SNSROxygen Sensors, Air Injection
Reactor (AIR) Relay
CRUISECruise Control Switch, Inside
Rearview Mirror, Transfer Case
Control Module, Brake Switch,
Clutch Disable
HTD/SEAT Heated Seat (If Equipped)
AIRBAGSupplemental In atable Restraint
System, Sensing and Diagnostic
ModuleFuses Usage
ABSAnti-lock Brake System (ABS),
ABS module, Four-Wheel Drive,
Gravity Sensor
BCK/UP Back-up Lights
FRT/AXLE Front Axle Actuator
TRN/HAZRD
REARRear Turn/Hazard Lights
ERLSMass Air Flow (MAF) Sensor, Can
Purge Solenoid, Air Injection
Reactor (AIR) Relay
PCMI Powertrain Control Module (PCM)
TRANS Transmission Solenoid
IGNIgnition, Clutch Starter Switch,
Neutral Safety Back-Up
Switch, Ignition Coils 1-5, Air
Conditioning Relay
INJ Injectors
ABS 1Anti-lock Brake System 1
(ABS Logic)
FRT PRK
LAMPFront Park/Turn Lamps, Driver
and Passenger’s Side Power
Window Switches Lighting
REAR PRK
LAMPRear Parking Lamp 1,
Passenger’s Side Taillamp,
License Plate Lamps
428

Fuses Usage
REAR PRK
LAMP2Driver’s Side Rear Taillamp,
Passenger Side Airbag Indicator
Lighting, Instrument Panel Dimming
Power (2WD/4WD switch lighting)
CLSTR Cluster
TRN/HAZRD
FRTTurn/Hazard/Courtesy/Cargo
Lamps/Mirrors
TCCM Transfer Case Control Module
HORN Horn
TBC Truck Body Controller
IGN TRNSD Ignition Transducers
RDO Radio
ONSTAR OnStar
®
CNSTR VENT Fuel Canister Vent Solenoid
PCM B Powertrain Control Module (PCM) B
Relays Usage
DRL Daylight Running Lamps
BEAM SEL Beam Selection
IGN 3 HVACIgnition 3, Climate Control, Climate
Control Head Fuse, Power Seat
Fuse
RAPRetained Accessory Power (Power
Window Fuse, Wiper/Washer Switch
Fuse), Sunroof Fuse
Relays Usage
PRK/LAMPFront Parking Lamp Fuse, Rear
Parking Lamps
HDLP Headlamps
FOG/LAMP Fog Lamps (If Equipped)
FUEL/PUMP Fuel Pump, Fuel Pump Fuse
A/C CMPRSR Air Conditioning Compressor
RUN/CRNKRun/Crank, Airbag System Fuse,
Cruise Control Fuse, Ignition Fuse,
Back-Up Lamps, ABS Fuse, Front
Axle, PCM-1, Injectors Fuse,
Transmission Fuse, ERLS
PWR/TRNPowertrain, Electronic Throttle
Control Fuse, Oxygen Sensor Fuse
HORN Horn
WPR 2 Wiper 2 (High/Low)
WPR Wipers (On/Off)
STRTR Starter Relay (PCM Relay)
Miscellaneous Usage
WPR Diode — Wiper
A/C CLTCH Diode — Air Conditioning, Clutch
MEGA FUSE Mega Fuse
429

Mirrors
Automatic Dimming Rearview with
Compass and Temperature Display....... 142
Automatic Dimming Rearview with
OnStar
®, Compass and Temperature
Display................................................. 139
Manual Rearview Mirror........................... 138
Manual Rearview Mirror with OnStar
®...... 138
Outside Convex Mirror............................. 146
Outside Manual Mirrors............................ 145
Outside Power Mirrors............................. 145
MP3 ............................................................ 230
MyGMLink.com............................................ 459
N
New Vehicle Break-In.................................. 115
Normal Maintenance Replacement Parts..... 449
O
Odometer.................................................... 179
Odometer, Trip............................................ 179
Off-Road Driving.......................................... 256Off-Road Recovery...................................... 253
Oil
Engine..................................................... 325
Pressure Light.......................................... 191
Oil, Engine Oil Life System ......................... 328
Older Children, Restraints............................. 43
Online Owner Center................................... 459
OnStar
®System, see OnStar®Manual........ 146
Other Warning Devices................................ 158
Outlet Adjustment........................................ 176
Outlet(s), Accessory Power.......................... 172
Outside
Convex Mirror.......................................... 146
Manual Mirrors......................................... 145
Power Mirrors.......................................... 145
Owner Checks and Services....................... 442
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 422
Park (P)
Shifting Into............................................. 132
Shifting Out of......................................... 134
486

Rearview Mirror, Automatic Dimming with
Compass and Temperature Display.......... 142
Rearview Mirror, Automatic Dimming with
OnStar
®, Compass and Temperature
Display..................................................... 139
Rearview Mirror with OnStar
®...................... 138
Rearview Mirrors......................................... 138
Reclining Seatbacks...................................... 12
Recommended Fluids and Lubricants.......... 447
Recovery Hooks.......................................... 285
Recreational Vehicle Towing........................ 293
Remote Keyless Entry (RKE) System.......... 100
Remote Keyless Entry (RKE) System,
Operation................................................. 101
Removing the Flat Tire and Installing
the Spare Tire.......................................... 398
Removing the Spare Tire and Tools............ 395
Replacement Bulbs..................................... 366
Reporting Safety Defects
Canadian Government............................. 474
General Motors........................................ 474
United States Government....................... 474Restraint System Check
Checking the Restraint Systems................. 94
Replacing Restraint System Parts After
a Crash.................................................. 95
Retained Accessory Power (RAP)................ 117
Right Front Passenger Position, Safety
Belts.......................................................... 34
Roadside
Assistance Program................................. 462
Rocking Your Vehicle to Get it Out.............. 284
Routing, Engine Drive Belt.......................... 450
Running the Engine While Parked............... 137
S
Safety Belt
Passenger Reminder Light....................... 180
Pretensioners............................................. 42
Reminder Light........................................ 180
Safety Belts
Care of.................................................... 418
Center Front Passenger Position................ 35
488