2016 GMC SIERRA DENALI power steering

GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
200 Driving and Operating
Drive Systems
Four-Wheel Drive
If equipped, four-wheel drive
engages the front axle for extra
traction. Read the appropriate
section for transfer case operation
before using.
Caution
Do not drive on clean, dry
pavement in 4
mand 4n(if
equipped) for an extended period
of time. These conditions may
cause premature wear on the
vehicle’s powertrain.
Driving on clean, dry pavement in
four-wheel drive may:
. Cause a vibration to be felt in
the steering system.
. Cause tires to wear faster.
. Make the transfer case harder to
shift, and cause it to run noisier.
{Warning
Shifting the transfer case to
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). You or someone else
could be seriously injured. Be
sure to set the parking brake
before placing the transfer case in
N (Neutral). See Parking Brake
0 207.
Caution
Extended high-speed operation in
4
nmay damage or shorten the
life of the drivetrain.
Engagement noise and bump when
shifting between 4
nand 4mor from
N (Neutral), with the engine running,
is normal.
Shifting into 4
nwill turn Traction
Control and StabiliTrak®off. See
Traction Control/Electronic Stability
Control 0208.
Electronic Transfer Case
Use the transfer case knob, next to
the steering wheel, to shift into and
out of four-wheel drive for extra
traction.
Indicator lights on the knob show
which setting the transfer case is in.
The N (Neutral) indicator is on the
face of the knob. The indicator lights
display briefly when the ignition is
turned on, and one will stay on.
If the lights display momentarily
when the ignition is in ON/RUN, but
none stay on, the knob may have
been turned while the vehicle was
off. To see the indicator, turn the
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GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
Driving and Operating 207
Using ABS
Do not pump the brakes. Just hold
the brake pedal down firmly and let
ABS work. You may hear the ABS
pump or motor operating and feel
the brake pedal pulsate. This is
normal.
Braking in Emergencies
ABS allows you to steer and brake
at the same time. In many
emergencies, steering can help
more than even the very best
braking.
Parking Brake
Set the parking brake by holding the
regular brake pedal down, then
pushing down the parking brake
pedal.
If the ignition is on, the brake
system warning light will come on.
SeeBrake System Warning Light
0 116.
Caution
Driving with the parking brake on
can overheat the brake system
and cause premature wear or
damage to brake system parts.
Make sure that the parking brake
is fully released and the brake
warning light is off before driving.
To release the parking brake, hold
the regular brake pedal down, then
push down momentarily on the
parking brake pedal until you feel
the pedal release. Slowly pull your
foot up off the parking brake pedal.
If the parking brake is not released
when you begin to drive, the brake system warning light will flash and a
chime will sound warning you that
the parking brake is still on.
If you are towing a trailer and are
parking on a hill, see
Driving
Characteristics and Towing Tips
0 228.
Brake Assist
The Brake Assist feature is
designed to assist the driver in
stopping or decreasing vehicle
speed in emergency driving
conditions. This feature uses the
stability system hydraulic brake
control module to supplement the
power brake system under
conditions where the driver has
quickly and forcefully applied the
brake pedal in an attempt to quickly
stop or slow down the vehicle. The
stability system hydraulic brake
control module increases brake
pressure at each corner of the
vehicle until the ABS activates.
Minor brake pedal pulsation or
pedal movement during this time is
normal and the driver should
continue to apply the brake pedal as
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GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
Driving and Operating 243
Trailer Brake Control Panel
1. Manual Trailer Brake ApplyLever
2. Trailer Gain Adjustment Buttons
The ITBC system has a control
panel on the instrument panel to the
left of the steering column. See
Instrument Panel 06. The control
panel allows adjustment to the
amount of output, referred to as
Trailer Gain, available to the trailer
brakes and allows manual
application of the trailer brakes. The
Trailer Brake Control Panel is used
along with the Trailer Brake Display Page on the Driver Information
Center (DIC) to adjust and display
power output to the trailer brakes.
Trailer Brake DIC Display Page
The ITBC system displays
messages in the DIC.
The display page indicates Trailer
Gain setting, power output to the
trailer brakes, trailer connection, and
system operational status.
To display the Trailer Brake Display
Page, do any of the following:
.
Scroll through the DIC menu
pages.
. Press a Trailer Gain button.
If the Trailer Brake Display Page
is not currently displayed, press
a Trailer Gain button to recall the
current Trailer Gain setting.
Each press and release of the
gain buttons will then change the
Trailer Gain setting.
. Activate the Manual Trailer
Brake Apply Lever.
TRAILER GAIN: This setting can be
adjusted from 0.0 to 10.0 with either
a trailer connected or disconnected. To adjust the Trailer Gain, press one
of the Trailer Gain Adjustment
buttons. Press and hold a gain
button to continuously adjust the
Trailer Gain. To turn the output to
the trailer off, adjust the Trailer Gain
setting to 0.0 (zero).
TRAILER OUTPUT: This displays
anytime a trailer with electric brakes
is connected. Output to the trailer
brakes is based on the amount of
vehicle braking present and relative
to the Trailer Gain setting. Output is
displayed from 0 to 100% for each
gain setting.
The Trailer Output will indicate
“- - -
- - -” on the Trailer Brake Display
Page whenever the following occur:
. No trailer is connected.
. A trailer without electric brakes
is connected (no DIC message
will display).
. A trailer with electric brakes has
become disconnected (a
CHECK TRAILER WIRING
message will also display on
the DIC).
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GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
Vehicle Care 251
Vehicle Care
General Information
General Information . . . . . . . . . . 252
California Proposition65 Warning . . . . . . . . . . . . . . . . . 252
California Perchlorate Materials Requirements . . . . . 252
Accessories and Modifications . . . . . . . . . . . . . . . . 252
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 253
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 254
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 255
Engine Oil . . . . . . . . . . . . . . . . . . . . 258
Engine Oil Life System . . . . . . . 261
Automatic Transmission Fluid (6 Speed Transmission) . . . . . 261
Automatic Transmission Fluid (8 Speed Transmission) . . . . . 264
Engine Air Cleaner/Filter . . . . . . 265
Cooling System . . . . . . . . . . . . . . 266
Engine Coolant . . . . . . . . . . . . . . . 267
Engine Overheating . . . . . . . . . . 270
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . 272
Engine Fan . . . . . . . . . . . . . . . . . . . 272 Power Steering Fluid (1500
Series) . . . . . . . . . . . . . . . . . . . . . . 273
Power Steering Fluid (2500/ 3500 Series) . . . . . . . . . . . . . . . . 273
Washer Fluid . . . . . . . . . . . . . . . . . 274
Brakes . . . . . . . . . . . . . . . . . . . . . . . 275
Brake Fluid . . . . . . . . . . . . . . . . . . . 275
Battery - North America . . . . . . 277
Four-Wheel Drive . . . . . . . . . . . . . 277
Front Axle . . . . . . . . . . . . . . . . . . . . 278
Rear Axle . . . . . . . . . . . . . . . . . . . . 279
Noise Control System . . . . . . . . 280
Starter Switch Check . . . . . . . . . 281
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 281
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 282
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 282
Wiper Blade Replacement . . . . 282
Glass Replacement . . . . . . . . . . 283
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 283
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 283
Halogen Bulbs . . . . . . . . . . . . . . . . 283
LED Lighting . . . . . . . . . . . . . . . . . 283 Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 284
Replacement Bulbs . . . . . . . . . . . 284
Electrical System
Electrical System Overload . . . 284
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 285
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 285
Instrument Panel Fuse Block (Right) . . . . . . . . . . . . . . . . . . . . . . 288
Instrument Panel Fuse Block (Left) . . . . . . . . . . . . . . . . . 290
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 292
All-Season Tires . . . . . . . . . . . . . . 293
Winter Tires . . . . . . . . . . . . . . . . . . 293
Low-Profile Tires . . . . . . . . . . . . . 294
All-Terrain Tires . . . . . . . . . . . . . . . 294
Tire Sidewall Labeling . . . . . . . . 294
Tire Designations . . . . . . . . . . . . . 297
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 298
Tire Pressure . . . . . . . . . . . . . . . . . 300
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 302
Tire Pressure Monitor
System . . . . . . . . . . . . . . . . . . . . . . 302
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GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
258 Vehicle Care
1. Positive (+) Terminal. SeeJump Starting - North America
0326.
2. Battery - North America 0277.
3. Coolant Surge Tank and Pressure Cap. See Cooling
System 0266.
4. Engine Air Cleaner/Filter 0265.
5. Automatic Transmission Dipstick. See “How to Check
the Automatic Transmission
Fluid” under Automatic
Transmission Fluid (6 Speed
Transmission) 0261 or
Automatic Transmission Fluid
(8 Speed Transmission) 0264.
6. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil 0258.
7. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil 0258.
8. Engine Cooling Fan (Out of View). See Cooling System
0 266. 9. Remote Negative (–) Location.
See Jump Starting - North
America 0326.
10. Power Steering Fluid Reservoir. See Power Steering
Fluid (1500 Series) 0273 or
Power Steering Fluid (2500/
3500 Series) 0273.
11. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 274.
12. Brake Fluid Reservoir. See Brake Fluid 0275.
13. Auxiliary Battery (If Equipped). SeeBattery - North America
0 277.
14. Engine Compartment Fuse
Block 0285.
If the vehicle has a diesel engine
and/or an Allison Transmission, see
the Duramax diesel supplement.
Engine Oil
For diesel engine vehicles, see
“Engine Oil” in the Duramax diesel
supplement. To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0261.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the vehicle
must be on level ground. The
engine oil dipstick handle is a loop.
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GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
Vehicle Care 273
extra shifts. It is merely the cooling
system functioning properly. The fan
will slow down when additional
cooling is not required and the
clutch disengages.
This fan noise may also be heard
when starting the engine. It will go
away as the fan clutch partially
disengages.
If the vehicle has electric cooling
fans, the fans may be heard
spinning at low speed during most
everyday driving. The fans may turn
off if no cooling is required. Under
heavy vehicle loading, trailer towing,
high outside temperatures,
or operation of the air conditioning
system, the fans may change to
high speed and an increase in fan
noise may be heard. This is normal
and indicates that the cooling
system is functioning properly. The
fans will change to low speed when
additional cooling is no longer
required.
The electric engine cooling fans
may run after the engine has been
turned. off. This is normal and no
service is required.Power Steering Fluid
(1500 Series)
The vehicle has electric power
steering and does not use power
steering fluid.
Power Steering Fluid
(2500/3500 Series)
SeeEngine Compartment Overview
0 255 for reservoir location.
When to Check Power Steering
Fluid
It is not necessary to regularly
check power steering fluid unless
there is a leak suspected in the
system or an unusual noise is
heard. A fluid loss in this system
could indicate a problem. Have the
system inspected and repaired. Wait for the power steering system
to cool, with the engine off, before
checking the fluid.
How to Check Power Steering
Fluid
To check the power steering fluid:
1. Turn the key off and let the engine compartment
cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the fluid level on the
dipstick.
The level should be between the
ADD and FULL marks. If necessary,
add only enough fluid to bring the
level up to the hashed area between
the ADD and FULL marks.
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GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
Vehicle Care 289
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Number Usage
1 Accessory Power Outlet 3 Number Usage
2 Accessory Power Outlet 4
7 Body Control Module 4
8 Body Control Module 8
9 Rear Seat Entertainment
10 Cargo Lamp
15 Steering Wheel Controls
18 Radio
19 Spare
20 Sunroof
23 Airbag/Info
26 Export/Power Take Off/SEO Battery 1
27 Obstacle Detection/ USB Ports
28 Body Control Module 2
32 SEO Battery 2
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GMC Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9234761) - 2016 - crc - 7/24/15
292 Vehicle Care
Number Usage17 Body Control Module 1
19 Spare
20 Spare
22 Heater, Ventilation, and Air Conditioning/
Auxiliary Heater,
Ventilation and Air
Conditioning Ignition
23 Instrument Cluster Ignition/Sensing
Diagnostic Module
Ignition
24 Spare
25 Data Link Connector/ Driver Seat Module
26 Passive Entry Passive Start/Heater,
Ventilation, and Air
Conditioning
27 Spare
28 Spare Number Usage
29 Park Enable/ Electrically Adjustable
Pedals
30 SEO
31 Accessory/Run Crank
32 Heated Steering Wheel
33 Spare
34 Instrument Cluster
36 Spare
37 Spare
40 Left Doors
41 Driver Power Seat
43 Left Front Heated/ Vented Seats
44 Right Front Heated/ Vented Seats
45 Spare
49 Retained Accessory Power/Accessory
50 Run/CrankWheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See
the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much
flexing. There could be a
blowout and a serious
crash. See Vehicle Load
Limits 0176.
(Continued)
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