
Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-6
Safety Belts
.............................................. 1-8
Child Restraints
.......................................1-27
Airbag System
.........................................1-48
Restraint System Check
............................1-61
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-7
Windows
.................................................2-12
Theft-Deterrent Systems
............................2-14
Starting and Operating Your Vehicle
...........2-16
Mirrors
....................................................2-29
OnStar
®System
......................................2-34
HomeLink®Transmitter
.............................2-36
Storage Areas
.........................................2-41
Sunroof
..................................................2-43
Vehicle Personalization
.............................2-44
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-20
Warning Lights, Gages, and Indicators
........3-26
Driver Information Center (DIC)
..................3-42Audio System(s)
.......................................3-60
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-51
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
All-Wheel Drive
........................................5-46
Rear Axle
...............................................5-47
Front Axle
...............................................5-48
Bulb Replacement
....................................5-49
Windshield Wiper Blade Replacement
.........5-55
Tires
......................................................5-56
Appearance Care
.....................................5-92
Vehicle Identi cation
...............................5-101
Electrical System
....................................5-102
Capacities and Speci cations
...................5-112
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-10
Index................................................................ 1
2005 GMC Sierra Denali Owner ManualM

Keys...............................................................2-2
Remote Keyless Entry System.........................2-3
Remote Keyless Entry System Operation...........2-4
Doors and Locks.............................................2-7
Door Locks....................................................2-7
Power Door Locks..........................................2-8
Delayed Locking.............................................2-8
Programmable Automatic Door Locks................2-9
Tailgate.......................................................2-11
Windows........................................................2-12
Power Windows............................................2-13
Sliding Rear Window.....................................2-14
Sun Visors...................................................2-14
Theft-Deterrent Systems..................................2-14
Content Theft-Deterrent.................................2-14
Passlock
®....................................................2-16
Starting and Operating Your Vehicle................2-16
New Vehicle Break-In....................................2-16
Ignition Positions..........................................2-17
Retained Accessory Power (RAP)...................2-17
Starting Your Engine.....................................2-18
Engine Coolant Heater..................................2-19
Automatic Transmission Operation...................2-20
Tow/Haul Mode............................................2-23
All-Wheel Drive............................................2-23
Parking Brake..............................................2-24Shifting Into Park (P).....................................2-25
Shifting Out of Park (P).................................2-26
Parking Over Things That Burn.......................2-27
Engine Exhaust............................................2-27
Running Your Engine While You Are Parked. . . .2-28
Mirrors...........................................................2-29
Automatic Dimming Rearview Mirror with
OnStar
®, Compass and Temperature
Display....................................................2-29
Outside Power Mirrors...................................2-32
Outside Power Foldaway Mirrors.....................2-32
Outside Automatic Dimming Mirror..................2-33
Outside Curb View Assist Mirrors....................2-33
Outside Convex Mirror...................................2-34
Outside Heated Mirrors..................................2-34
OnStar
®System.............................................2-34
HomeLink®Transmitter...................................2-36
Programming the HomeLink®Transmitter.........2-37
Storage Areas................................................2-41
Glove Box...................................................2-41
Cupholder(s)................................................2-41
Center Console Storage Area.........................2-41
Tonneau Cover............................................2-41
Sunroof.........................................................2-43
Vehicle Personalization...................................2-44
Memory Seat...............................................2-44
Section 2 Features and Controls
2-1

4. To add cargo to the
box, remove all bows
and the back rail
and stow them safely.
To clean the tonneau cover, use mild soap and water. If
necessary, use a soft bristle brush to remove dirt
trapped in the grain of the material.
Sunroof
The vehicle may be equipped with a power sliding
sunroof. To open or close your sunroof, the ignition must
be on or Retained Accessory Power (RAP) must be
active. SeeRetained Accessory Power (RAP) on
page 2-17for more information.Press the rear side of the
sunroof control, located on
the overhead console,
to open the sunroof.
To close the sunroof, press and hold the front of the
control. The control must be held until the glass
stops moving, so that the sunroof will be fully seated.
With the sunroof closed, press the rear of the control to
open the sunroof to the vent position.
The sunroof is also has a roller sunscreen that can be
used to block the rays of the sun. The roller sunscreen
can be manually operated with the sunroof in an
open or close position. To open the sunscreen, press
up to unlatch it and roll it back. To close, pull it forward
and latch it to the close position.
Do not leave the sunroof open for long periods of time
as debris can collect in the tracks.
2-43