2017 GMC SIERRA 1500 roof rack

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Keys, Doors, and Windows 49
To express-close the sunroof, fully
press and release
K. Press the
switch again to stop the movement.
Open/Close (Manual Mode) : To
open the sunroof, press and
hold
I. Release the switch to stop
the movement. Press and hold
K
to close the sunroof. Release the
switch to stop the movement.
Tilt Switch
Vent : From the closed position,
press
Jto vent the sunroof. Press
Kto close the vent.
When the sunroof is opened, an air
deflector will automatically raise.
The air deflector will retract when
the sunroof is closed.
The sunroof also has a sunshade,
which can be pulled forward to block
sun rays. The sunshade must be
opened and closed manually.
Automatic Reversal System
The sunroof is equipped with an
automatic reversal system that is
only active when the sunroof is
being operated in express-close. If an object is in the path of the
sunroof while it is express closing,
the reversal system will detect the
object and stop. In the event of
closing difficulties like frost or other
conditions, it is possible to override
the reversal system. To override the
reversal system, close in manual
mode. To stop the movement,
release the switch.
Dirt and debris may collect on the
sunroof seal or in the track. This
could cause an issue with sunroof
operation or noise. It could also plug
the water drainage system.
Periodically open the sunroof and
remove any obstacles or loose
debris. Wipe the sunroof seal and
roof sealing area using a clean
cloth, mild soap, and water. Do not
remove grease from the sunroof
tracks.
If water is seen dripping into the
water drainage system, this is
normal.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Infotainment System 191
Items on the roof of the vehicle can
interfere with the performance of the
radio system and OnStar (if
equipped). Make sure the
multi-band antenna is not
obstructed.Audio Players
CD Player
If the vehicle is equipped with a CD
player, it can be used for CD and
MP3 audio.
With the vehicle on, insert a disc
into the slot, label side up. Press the
MEDIA button to select CD as a
source.
The system is capable of
playing most:
.Audio CDs
. CD-R
. CD-RW
. MP3 or unprotected WMA
formats
When playing any compatible
recordable disc, the sound quality
can be reduced due to disc quality,
the method of recording, the quality
of the music that has been
recorded, or the way the disc has
been handled. There can be increased skipping,
difficulty in finding tracks, and/or
difficulty in loading and ejecting.
If these problems occur, check the
disc for damage or try a known
good disc.
To avoid damage to the CD player:
.
Do not use scratched or
damaged discs.
. Do not apply labels to discs. The
labels could get caught in the
player.
. Insert only one disc at a time.
. Keep the loading slot free of
foreign materials, liquids, and
debris.
. Use a marking pen to label the
top of the disc.
Loading and Ejecting Discs
To load a disc:
1. Turn the vehicle on.
2. Insert a disc into the slot, label side up. The player pulls it in
the rest of the way. If the disc

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
440 Service and Maintenance
.Lubricate body components. See
Exterior Care 0427.
. Check starter switch. See Starter
Switch Check 0371.
. Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function
Check 0371.
. Check ignition transmission lock.
See Ignition Transmission Lock
Check 0371.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism
Check 0371.
. Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
. Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
. Inspect sunroof track and seal,
if equipped. See Sunroof048. .
Verify spare tire key lock
operation and lubricate as
needed. See Tire
Changing 0408.