2017 GMC SIERRA 1500 cooling

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
16 In Brief
The windshield wiper control is on
the turn signal lever.
The windshield wipers are controlled
by turning the band with
zon it.
1:Fast wipes.
w:Slow wipes.
3INT : Turn the band up for more
frequent wipes or down for less
frequent wipes.
OFF : Turns the windshield
wipers off.
8: For a single wipe, turn to8,
then release. For several wipes,
hold the band on
8longer.
Lm: Push the paddle at the top of
the lever to spray washer fluid on
the windshield.
See Windshield Wiper/
Washer 0114.
Climate Controls
The heating, cooling, and ventilation in the vehicle can be controlled with this
system.
1. Driver Temperature Control
2. A/C (Air Conditioning)
3. Air Delivery Mode Controls
4. Fan Control
5. Defrost
6. Passenger Temperature
Control
7. SYNC (Synchronized Temperature)
8. Rear Window Defogger 9. Power Button
10. Air Recirculation
11. AUTO (Automatic Operation)
See Dual Automatic Climate Control
System 0231.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
112 Instruments and Controls
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 113
Steering Wheel Controls . . . . . . 113
Heated Steering Wheel . . . . . . . 114
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Windshield Wiper/Washer . . . . 114
Compass . . . . . . . . . . . . . . . . . . . . . 115
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 115
Power Outlets . . . . . . . . . . . . . . . . 117
Wireless Charging . . . . . . . . . . . . 118
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . 120
Instrument Cluster . . . . . . . . . . . . 121
Speedometer . . . . . . . . . . . . . . . . . 125
Odometer . . . . . . . . . . . . . . . . . . . . . 125
Trip Odometer . . . . . . . . . . . . . . . . 125
Tachometer . . . . . . . . . . . . . . . . . . . 125
Fuel Gauge . . . . . . . . . . . . . . . . . . . 125
Engine Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . . 126
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 127 Transmission Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 128
Voltmeter Gauge . . . . . . . . . . . . . 128
Safety Belt Reminders . . . . . . . . 129
Airbag Readiness Light . . . . . . . 130
Airbag On-Off Light . . . . . . . . . . . 130
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . 132
Charging System Light . . . . . . . 132
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 133
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 134
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 135
Four-Wheel-Drive Light . . . . . . . 136
Tow/Haul Mode Light . . . . . . . . . 136
Hill Descent Control Light . . . . 136
Lane Departure Warning (LDW) Light (2500/3500
Series) . . . . . . . . . . . . . . . . . . . . . . 136
Lane Keep Assist (LKA) Light (1500 Series) . . . . . . . . . . . . . . . 136
Vehicle Ahead Indicator . . . . . . 137
Traction Off Light . . . . . . . . . . . . . 137
StabiliTrak
®OFF Light . . . . . . . . 137
Traction Control System (TCS)/ StabiliTrak
®Light . . . . . . . . . . . 138
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 138
Tire Pressure Light . . . . . . . . . . . 138 Engine Oil Pressure Light . . . . 139
Low Fuel Warning Light . . . . . . 139
Security Light . . . . . . . . . . . . . . . . . 140
High-Beam On Light . . . . . . . . . . 140
Front Fog Lamp Light . . . . . . . . . 140
Lamps On Reminder . . . . . . . . . 140
Cruise Control Light . . . . . . . . . . 140
Door Ajar Light . . . . . . . . . . . . . . . 141
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . 141
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 144
Battery Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 145
Brake System Messages . . . . . 145
Compass Messages . . . . . . . . . . 146
Door Ajar Messages . . . . . . . . . . 146
Engine Cooling System Messages . . . . . . . . . . . . . . . . . . . 146
Engine Oil Messages . . . . . . . . . 147
Engine Power Messages . . . . . 147
Fuel System Messages . . . . . . . 147
Key and Lock Messages . . . . . 148
Lamp Messages . . . . . . . . . . . . . . 148
Object Detection System Messages . . . . . . . . . . . . . . . . . . . 148
Ride Control System Messages . . . . . . . . . . . . . . . . . . . 149

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
146 Instruments and Controls
As soon as it is safe to do so,
carefully pull your vehicle over to
the side of the road and turn the
ignition off. Check the wiring
connection to the trailer and turn the
ignition back on. If this message still
displays, either your vehicle or the
trailer needs service. See your
dealer.
See“Integrated Trailer Brake
Control System” underTowing
Equipment 0324 for more
information.
Compass Messages
Dashes may be displayed if the
vehicle temporarily loses
communication with the Global
Positioning System (GPS).
Door Ajar Messages
DOOR OPEN
This message displays and a chime
may sound if a door is not fully
closed. Stop and turn off the
vehicle, check the door for obstructions, and close the door
again. Check to see if the message
still appears on the DIC.
HOOD OPEN
This message displays and a chime
may sound if the hood is not fully
closed. Stop and turn off the
vehicle, check the hood for
obstructions, and close the hood
again. Check to see if the message
still appears on the DIC.
Engine Cooling System
Messages
A/C OFF DUE TO HIGH
ENGINE TEMP
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
See
Engine Coolant Temperature
Gauge 0127. To avoid added strain
on a hot engine, the air conditioning
compressor automatically turns off.
When the coolant temperature
returns to normal, the air
conditioning compressor turns back
on. You can continue to drive your
vehicle. If this message continues to appear,
have the system repaired by your
dealer as soon as possible to avoid
damage to the engine.
ENGINE OVERHEATING IDLE
ENGINE
This message displays when the
engine coolant temperature is too
hot. Stop and allow the vehicle to
idle until it cools down. See
Engine
Coolant Temperature Gauge 0127.
When towing, use Tow/Haul mode
to prevent damage to the engine or
transmission. See Tow/Haul
Mode 0273.
ENGINE OVERHEATED STOP
ENGINE
This message displays and a chime
may sound if the engine cooling
system reaches unsafe
temperatures for operation. Stop
and turn off the vehicle as soon as it
is safe to do so to avoid severe
damage. This message clears when
the engine has cooled to a safe
operating temperature.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Instruments and Controls 147
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when the
engine oil needs to be changed.
When you change the engine oil, be
sure to reset the CHANGE ENGINE
OIL SOON message. SeeEngine
Oil Life System 0351 for
information on how to reset the
message. See Engine Oil0348 and
Maintenance Schedule 0438.
ENGINE OIL LOW ADD OIL
On some vehicles, this message
displays when the engine oil level
may be too low. Check the oil level
before filling to the recommended
level. If the oil is not low and this
message remains on, take the
vehicle to your dealer for service.
See Engine Oil 0348.
ENGINE OIL HOT IDLE
ENGINE
This message displays when the
engine oil becomes hotter than the
normal operating temperature. Stop and allow the vehicle to idle until it
cools down. See
Engine Coolant
Temperature Gauge 0127.
OIL PRESSURE LOW STOP
ENGINE
This message displays if low oil
pressure levels occur. Stop the
vehicle as soon as safely possible
and do not operate it until the cause
of the low oil pressure has been
corrected. Check the oil as soon as
possible and have the vehicle
serviced by your dealer. See Engine
Oil 0348.
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays and a chime
may sound when the cooling system
temperature gets too hot and the
engine further enters the engine
coolant protection mode. See
Engine Overheating 0360 for more
information.
This message also displays when
the vehicle's engine power is
reduced. Reduced engine power
can affect the vehicle's ability to accelerate. If this message is on,
but there is no reduction in
performance, proceed to your
destination. The performance may
be reduced the next time the vehicle
is driven. The vehicle may be driven
at a reduced speed while this
message is on, but acceleration and
speed may be reduced. Anytime
this message stays on, the vehicle
should be taken to your dealer for
service as soon as possible.
Fuel System Messages
FUEL LEVEL LOW
This message displays and a chime
may sound if the fuel level is low.
Refuel as soon as possible. See
Fuel Gauge
0125 andFuel 0300.
TIGHTEN GAS CAP
This message may display along
with the malfunction indicator lamp
on the instrument cluster if the
vehicle's fuel cap is not tightened
properly. See Malfunction Indicator
Lamp (Check Engine Light) 0133.
Reinstall the fuel cap fully. See
Filling the Tank 0302. The

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
174 Lighting
Lighting Features
Entry Lighting
Some exterior lamps and the interior
lamps turn on briefly at night, or in
areas with limited lighting, when
K
is pressed on the Remote Keyless
Entry (RKE) transmitter. When a
door is opened, the interior lamps
come on if the dome lamp control is
in the DOOR position. After about
30 seconds the exterior lamps turn
off. Entry lighting can be disabled
manually by changing the ignition
out of the OFF position, or by
pressing the RKE transmitter
Q
button.
This feature can be changed. See
“Vehicle Locator Lights”under
Vehicle Personalization 0155.
Exit Lighting
Some exterior lamps and the interior
lamps come on at night, or in areas
with limited lighting when the key is
removed from the ignition. The
exterior and interior lamps remain
on for a set amount of time and then automatically turn off. The interior
lamps do not come on if the dome
lamp control is in the Off position.
The exterior lamps turn off
immediately by turning the exterior
lamps control off.
This feature can be changed. See
Vehicle Personalization
0155.
Battery Load
Management
The vehicle has Electric Power
Management (EPM), which
estimates the battery's temperature
and state of charge. It then adjusts
the voltage for best performance
and extended life of the battery.
When the battery's state of charge
is low, the voltage is raised slightly
to quickly bring the charge back up.
When the state of charge is high,
the voltage is lowered slightly to
prevent overcharging. The voltmeter
gauge or the voltage display on the
Driver Information Center (DIC),
if equipped, may show the voltage moving up or down. This is normal.
If there is a problem, an alert will be
displayed.
The battery can be discharged at
idle if the electrical loads are very
high. This is true for all vehicles.
This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all the
power that is needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog
lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.
EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.
It can increase engine idle speed to
generate more power, whenever
needed. It can temporarily reduce
the power demands of some
accessories.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Climate Controls 231
Climate Controls
Climate Control Systems
Dual Automatic ClimateControl System . . . . . . . . . . . . . 231
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 234
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . 235
Service . . . . . . . . . . . . . . . . . . . . . . . 236
Climate Control Systems
Dual Automatic Climate Control System
With this system the heating, cooling, and ventilation in the vehicle can be
controlled.
For an eAssist vehicle, see the Silverado/Sierra eAssist supplement.
1. Driver Temperature Control
2. A/C (Air Conditioning)
3. Air Delivery Mode Controls
4. Fan Control
5. Defrost
6. Passenger Temperature
Control 7. SYNC (Synchronized
Temperature)
8. Rear Window Defogger
9. Power Button
10. Air Recirculation
11. AUTO (Automatic Operation)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
246 Driving and Operating
Traction is reduced on hard packed
snow and ice and it is easy to lose
control. Reduce vehicle speed when
driving on hard packed snow
and ice.
{Warning
Driving on frozen lakes, ponds,
or rivers can be dangerous. Ice
conditions vary greatly and the
vehicle could fall through the ice;
you and your passengers could
drown. Drive your vehicle on safe
surfaces only.
Driving in Water
{Warning
Driving through rushing water can
be dangerous. Deep water can
sweep your vehicle downstream
and you and your passengers
could drown. If it is only shallow
water, it can still wash away the
ground from under your tires.(Continued)
Warning (Continued)
Traction could be lost, and the
vehicle could roll over. Do not
drive through rushing water.
Caution
Do not drive through standing
water if it is deep enough to cover
the wheel hubs, axles, or exhaust
pipe. Deep water can damage the
axle and other vehicle parts.
If the standing water is not too deep,
drive slowly through it. At faster
speeds, water splashes and the
vehicle can stall. When going
through water, the brakes get wet
and it may take longer to stop. See
“Driving on Wet Roads” later in this
section.
After Off-Road Driving
Remove any brush or debris that
has collected on the underbody or
chassis, or under the hood. These
accumulations can be a fire hazard.
After operation in mud or sand,
have the brake linings cleaned and
checked. These substances can
cause glazing and uneven braking.
Check the body structure, steering,
suspension, wheels, tires, and
exhaust system for damage and
check the fuel lines and cooling
system for any leakage.
More frequent maintenance service
is required. See the Maintenance
Schedule 0438.
Driving on Wet Roads
Rain and wet roads can reduce
vehicle traction and affect your
ability to stop and accelerate.
Always drive slower in these types
of driving conditions and avoid
driving through large puddles and
deep-standing or flowing water.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Driving and Operating 247
{Warning
Wet brakes can cause crashes.
They might not work as well in a
quick stop and could cause
pulling to one side. You could
lose control of the vehicle.
After driving through a large
puddle of water or a car/vehicle
wash, lightly apply the brake
pedal until the brakes work
normally.
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
vehicle to be carried away. If this
happens, you and other vehicle
occupants could drown. Do not
ignore police warnings and be
very cautious about trying to drive
through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water
can build up under the vehicle's
tires so they actually ride on the
water. This can happen if the road iswet enough and you are going fast
enough. When the vehicle is
hydroplaning, it has little or no
contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.
Allow extra following distance.
. Pass with caution.
. Keep windshield wiping
equipment in good shape.
. Keep the windshield washer fluid
reservoir filled.
. Have good tires with proper
tread depth. See Tires0383.
. Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips include: .
Keep the vehicle serviced and in
good shape.
. Check all fluid levels and brakes,
tires, cooling system, and
transmission.
. Shift to a lower gear when going
down steep or long hills.
{Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking.
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. This can cause
overheating of the brakes and
(Continued)