1999 GMC SIERRA child lock

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Q:If I'm a good driver, and I never drive far from
home, why should I wear safety belts?
A:You may be an excellent driver, but if you're in an
accident
-- even one that isn't your fault -- you
and your passengers can be hurt. Being a good
driver doesn't protect you from things beyond your
control, such as bad drivers.
Most accidents occur within 25 miles (40 km)
of home. And the greatest number of serious
injuries and deaths occur at speeds of less than
40 mph (65 km/h).
Safety belts are for everyone.
How to Wear Safety Belts Properly
Adults
This part is only for people of adult size.
Be aware that there are special things to know about
safety belts and children. And there are different
rules for smaller children and babies. If a child will be
riding in your vehicle, see the part of this manual called
ªChildren.º Follow those rules for everyone's protection.
First, you'll want to know which restraint systems your
vehicle has.
We'll start with the driver position.
Driver Position
This part describes the driver's restraint system.
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here's how to wear
it properly.
1. Close and lock the door.
2. Adjust the seat (to see how, see ªSeatsº in the Index)
so you can sit up straight.

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The best way to protect the fetus is to protect the
mother. When a safety belt is worn properly, it's more
likely that the fetus won't be hurt in a crash. For
pregnant women, as for anyone, the key to making
safety belts effective is wearing them properly.
Right Front Passenger Position
To learn how to wear the right front passenger's safety
belt properly, see ªDriver Positionº earlier in
this section.
The right front passenger's safety belt works the same
way as the driver's safety belt
-- except for one thing.
If you ever pull the lap portion of the belt out all the
way, you will engage the child restraint locking feature.
If this happens, just let the belt go back all the way and
start again.
Air Bag System
This part explains the air bag system.
Your vehicle may have
a ªNext Generationº
frontal air bag for the
driver and another
ªNext Generationº
frontal air bag for the
right front passenger.
If it does, it will say
AIR BAG on the
middle part of the
steering wheel.
Next Generation frontal air bags are designed to help
reduce the risk of injury from the force of an inflating
air bag. But even these air bags must inflate very
quickly if they are to do their job and comply with
federal regulations.

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4. Pull the rest of the lap belt all the way out of the
retractor to set the lock.
5. To tighten the belt, feed the lap belt back into the
retractor while you push down on the child restraint.
If you're using a forward
-facing child restraint, you
may find it helpful to use your knee to push down on
the child restraint as you tighten the belt.
6. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, just unbuckle the vehicle's
safety belt and let it go back all the way. The safety belt
will move freely again and be ready to work for an adult
or larger child passenger.

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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.

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Ignition Positions
CAUTION:
Leaving children in a vehicle with the ignition
key is dangerous for many reasons. A child or
others could be injured or even killed. They could
operate power windows or other controls or even
make the vehicle move. Don't leave the keys in
the vehicle with children.
You can use your key to turn your ignition switch to
five different positions.ACCESSORY (A): ACCESSORY lets you use things
like the radio, power windows and the windshield
wipers when the engine is off. Push in the key and turn
it toward you. Your steering wheel will remain locked,
just as it was before you inserted the key.
LOCK (B): This position locks your ignition, steering
wheel and transmission. It's a theft
-deterrent feature.
You will only be able to remove your key when the
ignition is turned to LOCK.

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4-10 Steering in Emergencies
There are times when steering can be more effective
than braking. For example, you come over a hill and
find a truck stopped in your lane, or a car suddenly pulls
out from nowhere, or a child darts out from between
parked cars and stops right in front of you. You can
avoid these problems by braking
-- if you can stop in
time. But sometimes you can't; there isn't room.
That's the time for evasive action
-- steering around
the problem.
Your vehicle can perform very well in emergencies like
these. First apply your brakes. (See ªBraking in
Emergenciesº earlier in this section.) It is better to
remove as much speed as you can from a possible
collision. Then steer around the problem, to the left or
right depending on the space available.
An emergency like this requires close attention and a
quick decision. If you are holding the steering wheel at
the recommended 9 and 3 o'clock positions, you can
turn it a full 180 degrees very quickly without removing
either hand. But you have to act fast, steer quickly, and
just as quickly straighten the wheel once you have
avoided the object.
The fact that such emergency situations are always
possible is a good reason to practice defensive driving at
all times and wear safety belts properly.

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Brake
Adjustment 6-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-34, 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 6-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pedal Travel 6-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing System Parts 6-38 . . . . . . . . . . . . . . . . . . . . . . . .
System Warning Light 2-68 . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer 4-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Shift Interlock Check 7-44 . . . . . . . . . . . . . . .
Wear 6-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes, Anti-Lock 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking in Emergencies 4-8 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Break-In, New Vehicle 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI Check 7-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Camper Wiring Harness 4-48 . . . . . . . . . . . . . . . . . . . . . . . .
Camper-Type Mirror 2-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian Roadside Assistance 8-7 . . . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications 6-76 . . . . . . . . . . . . . . . . . . . . . .
Carbon Monoxide 2-31, 4-40 . . . . . . . . . . . . . . . . . . . . . . . . .
Care of Your Cassette Tape Player 3-26 . . . . . . . . . . . . . . . . . .
Cargo Lamp 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Deck Service 7-41 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Player 3-10, 3-12 . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Player Care 3-26 . . . . . . . . . . . . . . . . . . . . . . . .
Center Overhead Console 2-51 . . . . . . . . . . . . . . . . . . . . . . . .
Center Passenger Position 1-35 . . . . . . . . . . . . . . . . . . . . . . . .
Certification Label 4-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Certification/Tire Label 4
-43 . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Safety 4-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Tire 6-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat Tire 5-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System Light 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Gages Light 2-74 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Your Restraint Systems 1-71 . . . . . . . . . . . . . . . . . .
Chemical Paint Spotting 6-67 . . . . . . . . . . . . . . . . . . . . . . . . . .
Child Restraints 1-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing in a Rear Outside Seat Position 1-54, 1-56 . . . . . .
Securing in the Center Seat Position 1-59 . . . . . . . . . . . . . .
Securing in the Right Front Seat Position 1-62, 1-64 . . . . .
Top Strap 1-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Put 1-52, 1-53 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chrome Wheels, Cleaning 6-68 . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 2-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Breakers and Fuses 6-70 . . . . . . . . . . . . . . . . . . . . . . .
Cleaner/Filter, Air 6-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning
Aluminum Wheels 6
-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior Lamps/Lenses 6-65 . . . . . . . . . . . . . . . . . . . . . . . .
Fabric 6-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glass 6-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside of Your Vehicle 6-61 . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 6-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Plastic Components 6-63 . . . . . . . . . . . . . . . . . . . . .
Leather 6-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside of Your Vehicle 6-65 . . . . . . . . . . . . . . . . . . . . . . . .
Special Problems 6-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stains 6-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires 6-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vinyl 6-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-8
Power
Accessory Outlet 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Locks 2-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver's Seat 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option Fuses 6-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 2-50 . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Fluid 6-32, 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Take-Off 4-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winches 4-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pregnancy, Use of Safety Belts 1-22 . . . . . . . . . . . . . . . . . . . .
Problems on the Road 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protecting Exterior Bright Metal Parts 6-66 . . . . . . . . . . . . . . .
PTO 4-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Publications, Service and Owner 8-12, 8-13 . . . . . . . . . . . . . .
Radiator 5-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Pressure Cap 6-27 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio Reception 3-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radios 3-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rain, Driving In 4-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Lamps 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear
Axle 6
-25, 7-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside Seat Position 1-37, 1-41 . . . . . . . . . . . . . . . . . . . . .
Safety Belt Comfort Guides 1-43 . . . . . . . . . . . . . . . . . . . . .
Seat Passengers 1-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Towing 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window Defogger 3-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Seat 1
-7, 1-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rearview Mirror 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrochromic Day/Night 2-45 . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reclining Seatbacks 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7-48 . . . . . . . . . . . . . . .
Recovery Hooks 5-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Tank, Coolant 5-11 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle Towing 4-41 . . . . . . . . . . . . . . . . . . . . . .
Refrigerants, Air Conditioning 6-78 . . . . . . . . . . . . . . . . . . . .
Replacement
Bulbs 6
-39, 6-75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 6-78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel 6-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Safety Belts 1-71 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reporting Safety Defects 8-10 . . . . . . . . . . . . . . . . . . . . . . . . .
Restraints
Checking 1
-71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Child 1-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head 1-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Parts After a Crash 1-71 . . . . . . . . . . . . . . . . . . .
System Check 7-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Right Front Passenger Position 1-23 . . . . . . . . . . . . . . . . . . . .
Roadside Assistance 8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roadside Assistance, Canadian 8-7 . . . . . . . . . . . . . . . . . . . . .
Rocking Your Vehicle 5-33 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roof Marker Lamp Bulb Replacement 6-46 . . . . . . . . . . . . . .
Rotation, Tires 6-52, 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . .