Page 2 of 600

GENERAL MOTORS, GM, the GM Emblem, GMC, the
GMC Truck Emblem, and the name SIERRA 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 rst sold in
Canada, substitute the name “General Motors of Canada
Limited” for GMC whenever it appears in this manual.
Keep this manual in the vehicle, so it will be there if it is
ever needed. If the vehicle is sold, leave this manual in it
so the new owner can use it.
Canadian Owners
A French language copy of this manual can be obtained
from your dealer or from:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
How to Use This Manual
Many people read the owner manual from beginning to
end when they rst receive their new vehicle. If this is
done, it can help you learn about the features and
controls for the vehicle. Pictures and words work
together in the owner manual to explain things.
Index
A good place to quickly locate information about the
vehicle is the Index in the back of the manual. It is an
alphabetical list of what is in the manual and the page
number where it can be found.
Litho in U.S.A.
Part No. 06SIERRA A First Printing
©2005 General Motors Corporation. All Rights Reserved.
ii
Page 233 of 600

Always reset the engine oil life system after an oil
change. To reset the engine oil life system, seeEngine
Oil Life System (Gasoline Engine) on page 5-23.
In addition to the engine oil life system monitoring the
oil life, additional maintenance is recommended in the
Maintenance Schedule in this manual. SeeEngine Oil
(Gasoline Engine) on page 5-20andScheduled
Maintenance (Gasoline Engine) on page 6-4.
Customization Button
4
(Customization):Press the customization button to
access the VEHICLE SETTINGS menu and customize
the settings to your vehicle. SeeDIC Vehicle
Customization on page 3-64for more information.
Select Button
r
(Select):Press the select button to reset certain
DIC functions and set your customization settings. For
example, this button will reset the trip odometers and
enables you to scroll through and select the language in
which the DIC information will appear.
DIC Warnings and Messages
Warning messages are displayed on the Driver
Information Center (DIC) to notify the driver that the
status of the vehicle has changed and that some action
may be needed by the driver to correct the condition.
If there is more than one message that needs to be
displayed, they will appear one after another. Some
messages may not require immediate action, but you
should press any of the four DIC buttons on the steering
wheel to acknowledge that you received the messages
and to clear them from the display. If your vehicle does
not have DIC buttons on the steering wheel, press the trip
odometer reset stem, located on the instrument panel
cluster, to acknowledge messages and clear them from
the display.
Some messages cannot be cleared from the display
because they are more urgent. These messages require
action before they can be removed from the DIC display.
You should take any messages that appear on the
display seriously and remember that clearing the
messages will only make the messages disappear,
not correct the problem.
The following are the possible messages that can be
displayed and some information about them.
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Page 303 of 600

Problem Recommended Action
In auxiliary mode, the
picture moves or scrolls.Check the auxiliary input
connections at both
devices.
Change the Video Format
to PAL or NTSC. See
“Stereo RCA Jacks”
previously for how to
change the video format.
The language in the
audio or on the screen
is wrong.Check the audio or
language selection in
the main DVD menu.
The remote control does
not work.Check to make sure there
is no obstruction between
the remote control and the
transmitter window.
Check the batteries
to make sure they are
not dead or installed
incorrectly.
The parental control button
might have been turned
on. The power indicator
light will ash.Problem Recommended Action
After stopping the player,
I push Play but sometimes
the DVD starts where I left
off and sometimes at the
beginning.If the stop button was
pressed one time, the DVD
player will resume playing
where the DVD was
stopped. If the stop button
was pressed two times the
DVD player will begin to
play from the beginning of
the DVD.
The auxiliary source is
running but there is no
picture or sound.Check that the DVD player
is in the auxiliary source
mode.
Check the auxiliary input
connections at both
devices.
My disc is stuck in the
player. The Load/Eject
button does not work.Turn the DVD power off,
then on, then press the
load/eject button on the
DVD player.
Do not attempt to forcibly
remove the disc from the
DVD player. This could
permanently damage the
disc and DVD player.
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