mirror GMC SONOMA 2003 User Guide

Freeway Driving
Mile for mile, freeways (also called thruways, parkways,
expressways, turnpikes or superhighways) are the
safest of all roads. But they have their own special rules.The most important advice on freeway driving is:
Keep up with traffic and keep to the right. Drive at the
same speed most of the other drivers are driving.
Too-fast or too-slow driving breaks a smooth trafficow.
Treat the left lane on a freeway as a passing lane.
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
theow. 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 trafficow.
Once you are on the freeway, adjust your speed to the
posted limit or to the prevailing rate if it’s 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 isn’t another vehicle in
your“blind”spot.
4-32
2003 - Sonoma OM

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.
Don’t let it happen to you! If it does, your vehicle can
leave the road inless 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.
Hill and Mountain Roads
Driving on steep hills or mountains is different from
driving inat or rolling terrain.
4-34
2003 - Sonoma OM

Trailer Brakes
If your trailer weighs more than 1,000 lbs. (450 kg)
loaded, then it needs its own brake–and they must be
adequate. Be sure to read and follow the instructions for
the trailer brakes so you’ll be able to install, adjust
and maintain them properly.
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) ofuid 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
sendsuid to the rear brakes. But don’t use copper
tubing for this. If you do, it will bend andnally 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 the trailer hitch and platform
(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.
4-57
2003 - Sonoma OM

Fuse Usage
W/W PMP Not Used
HORN Horn
BTSI Automatic Transmission Shift Lock
Control System
B/U LP Back Up Lamps
IGN B Column Feed,Ignition 2, 3, 4
STARTER Starter
RAP Retained Accessory Power
LD LEV Not Used
OXYSEN Oxygen Sensor
IGN E Engine
MIR/LKS Mirrors, Door Locks
FOG LP Fog Lamps
IGN A Starting and Charging Ignition 1
STUD #2 Accessory Feeds, Electric Brake
PARKLP Parking Lamps
LR PRK Left Rear Parking Lamps
LIFTGLASS Liftglass
IGN C Starter Solenoid, Fuel Pump,
PRNDL
HTDSEAT Heated SeatFuse Usage
HVAC Heating,Ventilation, Air Cooling
System
TRCHMSL Trailer Center High Mount Stop Light
RRDFOG Rear Defogger
TBC Truck Body Computer
CRANK Clutch Switch, NSBU Switch
CHMSL Center High Mounted Stoplamp
HAZLP Hazard Lamps
VECHMSL Vehicle Center High-Mounted
Stop Lamp
RR DEFOG Rear Defogger
HTDMIR Heated Mirror
ATC Transfer Case (Four-Wheel Drive)
STOPLP Stop Lamps
RR W/W Rear Window Wiper
5-93
2003 - Sonoma OM

Care of
Safety Belts................................................5-82
Your Cassette Tape Player............................3-68
Your CD Player...........................................3-69
Your CDs ...................................................3-69
Cassette Tape Messages.................................3-54
Cassette Tape Player Service...........................6-26
Center High-Mounted Stoplamp (CHMSL)...........5-54
Center Passenger Position, Safety Belts.............1-23
Chains, Tires..................................................5-66
Charging System Light....................................3-26
Check
Engine Light...............................................3-29
Gages Warning Light
...................................3-34
Checking Brake Fluid
......................................5-40
Checking Coolant
............................................5-26
Checking Engine Oil
........................................5-13
Checking the Fluid Level
..................................5-21
Checking Things Under the Hood
....................... 5-8
Checking Your Restraint Systems
......................1-64
Chemical Paint Spotting
...................................5-85
Child Restraints
Child Restraint Systems
...............................1-36
Infants and Young Children
...........................1-32
Lower Anchorages and Top Tethers for
Children (LATCH System)
..........................1-44
Older Children
.............................................1-30Child Restraints (cont.)
Securing a Child Restraint Designed for
the LATCH System...................................1-46
Securing a Child Restraint in a Center
Seat Position...........................................1-49
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-46
Securing a Child Restraint in the Right
Front Seat Position...................................1-49
Top Strap...................................................1-41
Top Strap Anchor Location............................1-43
Where to Put the Restraint...................1-39, 1-40
Cigarette Lighter.............................................3-16
Cleaning
Inside of Your Vehicle..................................5-79
Outside of Your Vehicle................................5-82
Underbody Maintenance...............................5-85
Weatherstrips..............................................5-82
Cleaning Exterior Lamps/Lenses.......................5-83
Cleaning the Mirror.........................................2-39
Cleaning the Photocells...................................2-39
Climate Control System...................................3-17
Outlet Adjustment........................................3-19
Clutch, Hydraulic.............................................5-24
Compact Disc Messages.................3-46, 3-56, 3-67
Compact Spare Tire........................................5-78
Content Theft-Deferrent....................................2-17
Control of a Vehicle.......................................... 4-5
3
2003 - Sonoma OM

Malfunction Indicator Light................................3-29
Manual Lumbar Controls.................................... 1-4
Manual Seats................................................... 1-3
Manual Transmission.......................................2-22
Fluid..........................................................5-23
Operation...................................................2-28
Manual Transmission Check.............................6-27
Manual Windows............................................2-15
Manually Closing the Sunroof...........................2-53
Matching Transmitter(s) to Your Vehicle............... 2-6
Memory Seat.................................................2-54
Mexico, Central America and Caribbean
Islands/Countries (Except Puerto Rico
and U.S. Virgin Islands)................................. 7-4
Mirrors
Automatic Dimming Rearview........................2-39
Manual Rearview Mirror................................2-39
Outside Convex Mirror.................................2-40
Outside Heated Mirrors................................2-41
Outside Manual Mirror..................................2-39
Outside Power Mirrors
..................................2-40
Model Reference
................................................ vi
MyGMLink.com
................................................ 7-3
N
New Vehicle Break-In
......................................2-20
Normal Maintenance Replacement Parts
............5-96
O
Odometer......................................................3-23
Odometer, Trip...............................................3-23
Off-Road Recovery..........................................4-10
Oil
Engine.......................................................5-13
Pressure Gage............................................3-32
Older Children, Restraints................................1-30
One-Piece Composite Headlamp System............5-50
Online Owner Center........................................ 7-3
Operating Your All-Wheel-Drive Vehicle
Off Paved Roads.........................................4-13
Other Warning Devices...................................... 3-4
Outlet Adjustment............................................3-19
Outside
Convex Mirror.............................................2-40
Heated Mirrors............................................2-41
Manual Mirror.............................................2-39
Power Mirrors.............................................2-40
Overhead Console..........................................2-42
Owners, Canadian............................................... ii
Owner’s Information........................................7-10
P
Park (P)
Shifting Into................................................2-33
Shifting Out of............................................2-35
10
2003 - Sonoma OM

Rear Axle......................................................5-47
Locking........................................................ 4-7
Rear Door Security Locks................................2-11
Rear Seat Operation......................................... 1-9
Rear Seat Outside Passenger Positions.............1-26
Rear Seat Passengers, Safety Belts..........1-25, 1-26
Rearview Mirror, Automatic Dimming..................2-39
Rearview Mirrors.............................................2-39
Reclining Seatbacks.......................................... 1-6
Recreational Vehicle Towing.............................4-42
Regular Cab and Extended Cab Models.............1-60
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing the
Spare Tire..................................................5-71
Removing the Spare Tire and Tools...................5-68
Removing Wheel Covers..................................5-70
Replacement Bulbs.........................................5-55
Replacing Brake System Parts..........................5-42
Replacing Restraint System Parts
After a Crash..............................................1-64
Reporting Safety Defects
Canadian Government................................... 7-9
General Motors............................................. 7-9
United States Government
.............................. 7-8
Restraint System Check
...................................6-26
Checking Your Restraint Systems
...................1-64
Replacing Restraint System Parts
After a Crash
..........................................1-64Restraint Systems
Checking....................................................1-64
Replacing Parts...........................................1-64
Retained Accessory Power (RAP)......................2-22
Right Front Passenger Position, Safety Belts......1-23
Roadside
Assistance Program....................................... 7-5
Rocking Your Vehicle To Get It Out...................4-40
Running Your Engine While You Are Parked.......2-38
S
Safety Belt
Reminder Light............................................3-23
Safety Belts
Care of ......................................................5-82
Center Passenger Position............................1-23
Driver Position............................................1-16
How to Wear Safety Belts Properly................1-15
Questions and Answers About
Safety Belts.............................................1-15
Rear Seat Passengers.........................1-25, 1-26
Right Front Passenger Position......................1-23
Safety Belt Extender....................................1-29
Safety Belt Use During Pregnancy.................1-22
Safety Belts Are for Everyone.......................1-10
Safety Chains.................................................4-56
Safety Warnings and Symbols.............................. iii
Scanning the Terrain.......................................4-16
12
2003 - Sonoma OM