Page 1 of 331
Page 2 of 331
i
1-1 Seats and Restraint Systems
Page 3 of 331

ii
GENERAL MOTORS, GM, the GM Emblem,
CHEVROLET, the CHEVROLET Emblem are
registered trademarks of General Motors Corporation.
This manual includes the latest information at the time it
was printed. We reserve the right to make changes after
that time without further notice. For vehicles first sold in
Canada, substitute the name ªGeneral Motors of Canada
Limitedº for Chevrolet Motor Division whenever it
appears in this manual.
Please keep this manual in your vehicle, so it will
be there if you ever need it when you're on the road.
If you sell the vehicle, please leave this manual in it
so the new owner can use it.
We support voluntary
technician certification.
For Canadian Owners Who Prefer a
French Language Manual:
Aux propri‡taires canadiens: Vous pouvez vous
procurer un exemplaire de ce guide en fran†ais chez
votre concessionaire ou au:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Litho in U.S.A.Copyright General Motors Corporation 07/23/01
Part Number C2204 First Edition All Rights Reserved
Page 4 of 331
iii
CAUTION:
These mean there is something that could hurt
In the caution area, we tell you what the hazard is.
Y ou will also find a circle
Page 5 of 331

iv
Vehicle Damage Warnings
Also, in this book you will find these notices:
NOTICE:
These mean there is something that could damage
your vehicle.
In the notice area, we tell you about something that can
damage your vehicle. Many times, this damage would
not be covered by your warranty, and it could be costly.
But the notice will tell you what to do to help avoid
the damage.
When you read other manuals, you might see
CAUTION and NOTICE warnings in different
colors or in different words.
You'll also see warning labels on your vehicle.
They use the same words, CAUTION or NOTICE.
Vehicle Symbols
Your vehicle may be equipped with components and
labels that use symbols instead of text. Symbols,
used on your vehicle, are shown along with the text
describing the operation or information relating to a
specific component, control, message, gage or indicator.
If you need help figuring out a specific name of a
component, gage or indicator reference the following
topics in the Index:
ªEngine Compartment Overviewº
ªInstrument Panelº
ªComfort Controlsº
ªAudio Systemsº
Also see ªWarning Lights and Gagesº in the Index.
Page 6 of 331
v
These are some examples of vehicle symbols you may find on your vehicle:
Page 7 of 331
vi
Model Reference
This manual covers this model:
3500HD Chassis Cab
Page 8 of 331
1-
1-1
Section 1 Seats and Restraint Systems
Here you'll find information about the seats in your vehicle and how to use your safety belts properly. You can also
learn about some things you should not do with safety belts.
1
-2 Seats and Seat Controls
1
-6 Safety Belts: They're for Everyone
1
-10 Here Are Questions Many People Ask
About Safety Belts
-- and the Answers
1
-11 How to Wear Safety Belts Properly
1
-11 Driver Position
1
-19 Safety Belt Use During Pregnancy
1
-20 Right Front Passenger Position1
-20 Center Passenger Position
1
-21 Children
1
-24 Restraint Systems for Children
1
-33 Older Children
1
-36 Safety Belt Extender
1
-36 Checking Your Restraint Systems
1
-36 Replacing Restraint System Parts
After a Crash