1999 GMC SIERRA locks

yellowblue
1-15
3. Pick up the latch plate and pull the belt across you.
Don't let it get twisted.
4. Push the latch plate into the buckle until it clicks.
Pull up on the latch plate to make sure it is secure.
If the belt isn't long enough, see ªSafety Belt
Extenderº at the end of this section.
Make sure the release button on the buckle is positioned
so you would be able to unbuckle the safety belt quickly
if you ever had to.The lap part of the belt should be worn low and snug on
the hips, just touching the thighs. In a crash, this applies
force to the strong pelvic bones. And you'd be less likely
to slide under the lap belt. If you slid under it, the belt
would apply force at your abdomen. This could cause
serious or even fatal injuries. The shoulder belt should go
over the shoulder and across the chest. These parts of the
body are best able to take belt restraining forces.
The safety belt locks if there's a sudden stop or a crash.

yellowblue
1-40
The safety belt locks if there's a sudden stop or a crash.
CAUTION:
You can be seriously hurt if your shoulder belt is
too loose. In a crash, you would move forward
too much, which could increase injury. The
shoulder belt should fit against your body.
To unlatch the belt, just push the button on the buckle.

yellowblue
1-42
Make sure the release button on the buckle is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.The lap part of the belt should be worn low and snug on
the hips, just touching the thighs. In a crash, this applies
force to the strong pelvic bones. And you'd be less likely
to slide under the lap belt. If you slid under it, the belt
would apply force at your abdomen. This could cause
serious or even fatal injuries. The shoulder belt should go
over the shoulder and across the chest. These parts of the
body are best able to take belt restraining forces.
The safety belt locks only if there's a sudden stop
or a crash.
CAUTION:
You can be seriously hurt if your shoulder belt is
too loose. In a crash, you would move forward
too much, which could increase injury. The
shoulder belt should fit against your body.

2-
yellowblue
2-1
Section 2 Features and Controls
Here you can learn about the many standard and optional features on your vehicle, and information on starting,
shifting and braking. Also explained are the instrument panel and the warning systems that tell you if everything is
working properly
-- and what to do if you have a problem.
2
-2 Keys
2
-3 Tailgate
2
-4 Third Door (If Equipped)
2
-5 Door Locks
2
-6 Keyless Entry System (If Equipped)
2
-9 Theft
2
-10 Passlock

2-10 New Vehicle ªBreak-Inº
2
-11 Ignition Positions
2
-13 Starting Your Gasoline Engine
2
-15 Engine Coolant Heater (If Equipped)
2
-16 Automatic Transmission Operation
2
-19 Manual Transmission Operation
2
-21 Four-Wheel Drive (If Equipped)
2
-25 Parking Brake
2
-27 Shifting Into Park (P)
(Automatic Transmission Only)
2
-29 Shifting Out of Park (P)
(Automatic Transmission)2
-30 Parking Your Vehicle
(Manual Transmission Only)
2
-30 Parking Over Things That Burn
2
-31 Engine Exhaust
2
-31 Running Your Engine While You're Parked
(Automatic Transmission)
2
-32 Locking Rear Axle (If Equipped)
2
-32 Windows
2
-35 Tilt Wheel (If Equipped)
2
-35 Turn Signal/Multifunction Lever
2
-41 Exterior Lamps
2
-42 Interior Lamps
2
-44 Mirrors
2
-51 Storage Compartments
2
-60 Instrument Panel
2
-62 Instrument Panel Cluster
2
-64 Warning Lights, Gages and Indicators

yellowblue
2-3
Your vehicle has one
double
-sided key for the
ignition and all door locks.
If you ever lose your keys, your dealer will be able to
assist you with obtaining new ones.
NOTICE:
Your vehicle has a number of new features that
can help prevent theft. You can have a lot of
trouble getting into your vehicle if you ever lock
your key inside. You may even have to damage
your vehicle to get in. So be sure you have an
extra key.
Tailgate
You can open the tailgate by lifting up on its handle
while pulling the tailgate toward you.
To shut the tailgate, firmly push it away from you into
the latch.
After you put the tailgate back up, pull it back toward
you to be sure that it latches securely.
Tailgate Removal
The tailgate on your vehicle can be removed to allow for
different loading situations. Although the tailgate can be
removed without assistance, you may want someone to
assist you with the removal to avoid possible damage to
the vehicle.

yellowblue
2-5
Door Locks
CAUTION:
Unlocked doors can be dangerous.
Passengers -- especially children -- can easily
open the doors and fall out. When a door is
locked, the inside handle won't open it.
Outsiders can easily enter through an unlocked
door when you slow down or stop your vehicle.
This may not be so obvious: You increase the
chance of being thrown out of the vehicle in a
crash if the doors aren't locked. Wear safety belts
properly, lock your doors, and you will be far
better off whenever you drive your vehicle.
There are several ways to lock and unlock your vehicle.
From the outside, use your key or the keyless entry
system, if your vehicle has this option.
To lock the door from the
inside, slide the lever on
your door down.
To unlock the door, slide the lever up.

yellowblue
2-6 Power Door Locks (If Equipped)
Press the top of the power
door lock switch, marked
LOCK, on either front door
to lock all the doors at once.
Press the ribbed side of the
switch to unlock all the
doors at once.
Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open your
door and set the locks from inside. Then get out and
close the door.
Keyless Entry System (If Equipped)
If your vehicle has this option, you can lock and unlock
your doors from about 3 feet (1 m) up to 30 feet (9 m)
away using the remote keyless entry transmitter supplied
with your vehicle.Your interior lamps will be illuminated for a set period
of time when the transmitter signal is received by the
Keyless Entry System. In addition, your vehicle's horn
will chirp if you press the LOCK button twice, to let you
know that the doors have locked.
Your keyless entry system operates on a radio frequency
subject to Federal Communications Commission (FCC)
Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
This device complies with RSS
-210 of Industry Canada.
Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation of
the device.
Changes or modifications to this system by other than an
authorized service facility could void authorization to
use this equipment.

yellowblue
2-9
Resynchronization
Resynchronization may be necessary due to the security
method used by this system. The transmitter does not
send the same signal twice to the receiver. The receiver
will not respond to a signal it has been sent previously.
This prevents anyone from recording and playing back
the signal from the transmitter.
To resynchronize your transmitter, stand close to your
vehicle and simultaneously press and hold the LOCK
and UNLOCK buttons on the transmitter for at least five
seconds. The door locks should cycle to confirm
synchronization. If the locks do not cycle, see your
dealer for service.
Theft
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft
-deterrent
features, we know that nothing we put on it can make it
impossible to steal. However, there are ways you can help.
Key in the Ignition
If you leave your vehicle with the keys inside, it's an
easy target for joy riders or professional thieves
-- so
don't do it.When you park your vehicle and open the driver's door,
you'll hear a tone reminding you to remove your key
from the ignition and take it with you. Always do this.
Your steering wheel will be locked, and so will your
ignition. If you have an automatic transmission, taking
your key out also locks your transmission. Also
remember to lock the doors.
Parking at Night
Park in a lighted spot, close all windows and lock your
vehicle. Remember to keep your valuables out of sight.
Put them in a storage area, or take them with you.
Parking Lots
If you park in a lot where someone will be watching
your vehicle, it's best to lock it up and take your keys.
But what if you have to leave your ignition key? What if
you have to leave something valuable in your vehicle?

Put your valuables in a storage area, like your
glove box.

If your vehicle has a remote keyless entry system,
take the transmitter with you.

Lock all the doors except the driver's.