2004 GMC SAFARI lock

Audio System(s)
Notice:Before you add any sound equipment to
your vehicle – like a tape player, CB radio, mobile
telephone or two-way radio – be sure you can
add what you want. If you can, it’s very important to
do it properly. Added sound equipment may
interfere with the operation of your vehicle’s engine,
radio or other systems, and even damage them.
Your vehicle’s systems may interfere with the
operation of sound equipment that has been added
improperly.
So, before adding sound equipment, check with
your dealer and be sure to check federal rules
covering mobile radio and telephone units.
Your audio system has been designed to operate easily
and to give years of listening pleasure. You will get
the most enjoyment out of it if you acquaint yourself with
it rst. Figure out which radio you have in your vehicle,
nd out what your audio system can do and how to
operate all of its controls to be sure you’re getting the
most out of the advanced engineering that went into it.
Your vehicle has a feature called Retained Accessory
Power (RAP). With RAP, you can play your audio
system even after the ignition is turned off. See
“Retained Accessory Power (RAP)” underIgnition
Positions on page 2-17.
Setting the Time for Radios with the
Set Button
Press SET. Within ve seconds, press and hold the left
SEEK arrow until the correct hour appears on the
display. Press and hold the right SEEK arrow until the
correct minute appears on the display.
Setting the Time for Radios with HR
and MN Buttons
Press and hold HR until the correct hour appears on the
display. Press and hold MN until the correct minute
appears on the display. To display the time with
the ignition off, press RECALL or HR/MN and the time
will be displayed for a few seconds. There is an
initial two-second delay before the clock goes into the
time-set mode.
3-38

Radio with CD
Playing the Radio
PWR (Power):Press this knob to turn the system
on and off.
VOL (Volume):Turn this knob to increase or to
decrease volume. The knob is capable of rotating
continuously.SCV (Speed-Compensated Volume):With SCV, your
audio system adjusts automatically to make up for
road and wind noise as you drive.
Set the volume at the desired level. Turn the control
ring behind the upper knob clockwise to increase
the SCV. Each notch on the control ring allows for more
volume compensation at faster vehicle speeds. Then,
as you drive, SCV automatically increases the volume,
as necessary, to overcome noise at any speed. The
volume level should always sound the same to you as
you drive. If you do not want to use SCV, turn the control
all the way down.
RECALL:Press this button to switch the display
between the radio station frequency and the time.
Time display is available with the ignition turned off.Finding a Station
AM FM:Press this button to switch between FM1, FM2,
and AM. The display will show your selection.
TUNE:Press this knob lightly so it extends. Turn it to
select radio stations. Push the knob back into its stored
position when you are not using it.
3-41

While listening to a CD, press the up arrow to hear the
next track on the CD. Press the down arrow to go
back to the start of the current track if more than eight
seconds have played. The SEEK button is inactive if the
CD mode on the front radio is in use.
To scan preset stations, press and hold either SEEK
arrow until SCAN appears on the radio display.
The radio will go to a station, play for a few seconds,
then go on to the next station. Press either SEEK arrow
again to stop scanning. The scan function is inactive
if the front radio is in use.
P.SET PROG (Preset Program):The front passengers
must be listening to something different for each of
these functions to work:
Press this button to scan through the preset radio
stations set on the pushbuttons on the main radio.
The radio will go to a preset station, play for a
few seconds, then go on to the next preset station.
Press this button again to stop scanning.
TAPE CD:Press this button to play CD when listening
to the radio.
Theft-Deterrent Feature
THEFTLOCK®is designed to discourage theft of your
radio. It works by using a secret code to disable all radio
functions whenever battery power is interrupted.
The THEFTLOCK
®feature for the radio may be used or
ignored. If ignored, the system plays normally and the
radio is not protected by the feature. If THEFTLOCK
®is
activated, your radio will not operate if stolen.
When THEFTLOCK
®is activated, LOC will appear on
the radio display to indicate a locked condition anytime
battery power has been interrupted. If your battery
loses power for any reason, you must unlock the radio
with the secret code before it will operate.
3-47

Activating the Theft-Deterrent Feature
The instructions which follow explain how to enter
your secret code to activate the THEFTLOCK®system.
Read through all nine steps before starting the
procedure.
If you allow more than 15 seconds to elapse between
any steps, the radio automatically reverts to time
and you must start the procedure over at Step 4.
1. Write down any three or four-digit number from 000
to 1999 and keep it in a safe place separate from
the vehicle.
2. Turn the ignition on.
3. Turn the radio off.
4. Press the 1 and 4 pushbuttons at the same time.
Hold them down until --- shows on the display.
Next you will use the secret code number which you
have written down.
5. Press MN and 000 will appear on the display.6. Press MN again to make the last two digits agree
with your code.
7. Press HR to make the rst one or two digits agree
with your code.
8. Press AM FM after you have conrmed that the
code matches the secret code you have written
down. The display will show REP to let you know
that you need to repeat Steps 5 through 7 to conrm
your secret code.
9. Press AM FM and this time the display will show
SEC to let you know that your radio is secure.
The LED indicator by the volume knob will begin
ashing when the ignition is turned off.
3-48

Unlocking the Theft-Deterrent Feature
After a Power Loss
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition on. LOC will appear on the
display.
2. Press MN and 000 will appear on the display.
3. Press MN again to make the last two digits agree
with your code.
4. Press HR to make the rst one or two digits agree
with your code.
5. Press AM FM after you have conrmed that the
code matches the secret code you have written
down. The display will show SEC, indicating
the radio is now operable and secure.
If you enter the wrong code eight times, INOP will
appear on the display. You will have to wait an hour
with the ignition on before you can try again. When you
try again, you will only have three chances to enter
the correct code before INOP appears.
If you lose or forget your code, contact your dealership.
Disabling the Theft-Deterrent Feature
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition on.
2. Turn the radio off.
3. Press the 1 and 4 pushbuttons at the same time.
Hold them down until SEC appears on the display.
4. Press MN and 000 will appear on the display.
5. Press MN again to make the last two digits agree
with your code.
6. Press HR to make the rst one or two digits agree
with your code.
7. Press AM FM after you have conrmed that the
code matches the secret code you have written
down. --- will appear on the display, indicating that
the radio is no longer secured.
If the code entered is incorrect, SEC will appear on the
display. The radio will remain secured until the correct
code is entered.
When battery power is removed and later applied to a
secured radio, the radio won’t turn on and LOC will
appear on the display.
To unlock a secured radio, seeUnlocking the
Theft-Deterrent Feature After a Power Lossearlier in
this section.
3-49

Your Driving, the Road, and Your Vehicle..........4-2
Defensive Driving...........................................4-2
Drunken Driving.............................................4-3
Control of a Vehicle........................................4-6
Braking.........................................................4-6
Locking Rear Axle..........................................4-9
Steering........................................................4-9
Off-Road Recovery.......................................4-11
Passing.......................................................4-12
Loss of Control.............................................4-13
Driving at Night............................................4-14
Driving in Rain and on Wet Roads..................4-16
City Driving..................................................4-19Freeway Driving...........................................4-20
Before Leaving on a Long Trip.......................4-21
Highway Hypnosis........................................4-22
Hill and Mountain Roads................................4-22
Winter Driving..............................................4-24
If You Are Stuck: In Sand, Mud, Ice or Snow . . .4-28
Towing..........................................................4-29
Towing Your Vehicle.....................................4-29
Recreational Vehicle Towing...........................4-29
Loading Your Vehicle....................................4-29
Towing a Trailer...........................................4-35
Section 4 Driving Your Vehicle
4-1

Avoid needless heavy braking. Some people drive
in spurts — heavy acceleration followed by heavy
braking — rather than keeping pace with traffic. This is
a mistake. Your brakes may not have time to cool
between hard stops. Your brakes will wear out much
faster if you do a lot of heavy braking. If you keep pace
with the traffic and allow realistic following distances,
you will eliminate a lot of unnecessary braking.
That means better braking and longer brake life.
If your engine ever stops while you are driving, brake
normally but do not pump your brakes. If you do,
the pedal may get harder to push down. If your engine
stops, you will still have some power brake assist.
But you will use it when you brake. Once the power
assist is used up, it may take longer to stop and
the brake pedal will be harder to push.Anti-lock Brake System
Your vehicle has anti-lock brakes. ABS is an advanced
electronic braking system that will help prevent a
braking skid.
When you start your engine and begin to drive away,
your anti-lock brake system will check itself. You
may hear a momentary motor or clicking noise while
this test is going on. This is normal.
If there is a problem with the anti-lock brake system,
this warning light will stay on. SeeAnti-Lock Brake
System Warning Light on page 3-29. United States
Canada
4-7

Let us say the road is wet and you are driving safely.
Suddenly, an animal jumps out in front of you. You slam
on the brakes and continue braking. Here is what
happens with ABS:
A computer senses that wheels are slowing down. If
one of the wheels is about to stop rolling, the computer
will separately work the brakes at each front wheel
and at both rear wheels.The anti-lock system can change the brake pressure
faster than any driver could. The computer is
programmed to make the most of available tire and road
conditions. This can help you steer around the obstacle
while braking hard.
As you brake, your computer keeps receiving updates
on wheel speed and controls braking pressure
accordingly.
4-8