Tow haul warning light GMC SIERRA 1500 2017 Owners Manual

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
In Brief 7
1.Instrument Panel Illumination
Control 0172.
2. Integrated Trailer Brake Control (ITBC) System (If Equipped).
See Towing Equipment 0324.
3. Exterior Lamp Controls 0166.
Fog Lamps 0171 (If
Equipped).
4. Air Vents 0234.
5. Turn Signal Lever. See Turn
and Lane-Change
Signals 0170.
Windshield Wiper/
Washer 0114.
6. Favorite Switches (Out of View). See Steering Wheel
Controls 0113.
Volume Switches (Out of View).
See Steering Wheel
Controls 0113.
7. Instrument Cluster 0121.
8. Hazard Warning
Flashers 0170
9. Shift Lever. See Automatic
Transmission 0267. Tow/Haul Selector Button (If
Equipped). See
Tow/Haul
Mode 0273.
Range Selection Mode (If
Equipped). See Manual
Mode 0270.
10. Light Sensor. See Automatic
Headlamp System 0169.
11. Infotainment 0176.
12. Heated and Ventilated Front
Seats 055 (If Equipped).
13. Power Outlet (Alternating Current) (If Equipped). See
Power Outlets 0117.
14. Power Outlets 0117.
15. USB Port. See Infotainment 0176.
16.
gTraction Control/Electronic
Stability Control 0284.
0Pedal Adjust Switch (If
Equipped). See Adjustable
Throttle and Brake
Pedal 0258.
{Cargo Lamp 0172.
XParking Assist Button (If
Equipped). See Assistance
Systems for Parking or
Backing 0291.
ALane Keep Assist (LKA)
(1500 Series) 0298 (If
Equipped).
@Lane Departure Warning
(LDW) (2500/3500 Series)
0 296 (If Equipped).
5Hill Descent Control Switch
(If Equipped). See Hill Descent
Control (HDC) 0286.
qExhaust Brake (If
Equipped). See “Exhaust
Brake” in the Duramax diesel
supplement.
Auxiliary Button (If Equipped).
See Add-On Electrical
Equipment 0334.
17. Dual Automatic Climate Control
System 0231.
18. Steering Wheel Controls 0113
(If Equipped).

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
134 Instruments and Controls
If towing a trailer, reduce the
amount of cargo being hauled as
soon as possible.
If the light continues to flash, find a
safe place to park. Turn the vehicle
off and wait at least 10 seconds
before restarting the engine. If the
light is still flashing, follow the
previous guidelines and see your
dealer for service as soon as
possible.
If the light is on steady :A
malfunction has been detected.
Diagnosis and service may be
required.
Check the following:
. A loose or missing fuel cap may
cause the light to come on. See
Filling the Tank 0302. A few
driving trips with the cap
properly installed may turn the
light off.
. Poor fuel quality can cause
inefficient engine operation and
poor driveability, which may go
away once the engine is warmed
up. If this occurs, change the
fuel brand. It may require at least one full tank of the proper
fuel to turn the light off. See
Fuel
0300.
If the light remains on, see your
dealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the
test equipment will likely connect to
the vehicle's Data Link
Connector (DLC).
The DLC is under the instrument
panel to the left of the steering
wheel. Connecting devices that are
not used to perform an Emissions
Inspection/Maintenance test or to
service the vehicle may affect
vehicle operation. See Add-On
Electrical Equipment 0334. See
your dealer if assistance is needed. The vehicle may not pass
inspection if:
.
The light is on when the engine
is running.
. The light does not come on
when the ignition is in ON/RUN
while the engine is off.
. Critical emission control systems
have not been completely
diagnosed. If this happens, the
vehicle would not be ready for
inspection and might require
several days of routine driving
before the system is ready for
inspection. This can happen if
the 12-volt battery has recently
been replaced or run down, or if
the vehicle has been recently
serviced.
See your dealer if the vehicle will
not pass or cannot be made ready
for the test.
Brake System Warning
Light
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
136 Instruments and Controls
If both the ABS and the brake
system warning light are on, the
vehicle's antilock brakes are not
functioning and there is a problem
with the regular brakes. See your
dealer for service.
SeeBrake System Warning Light
0 134 andBrake System
Messages 0145.
Four-Wheel-Drive Light
The four-wheel-drive light comes on
when the transfer case is shifted
into four-wheel drive and the front
axle engages. LO or HI will also be
next to this light when the vehicle is
in four-wheel low or four-wheel high.
Some delay between the shifting
and the light coming on is normal.
See Four-Wheel Drive 0274.
Tow/Haul Mode Light
For vehicles with the Tow/Haul
Mode feature, this light comes on
when the Tow/Haul Mode has been
activated.
See Tow/Haul Mode 0273.
Hill Descent Control Light
If equipped, the Hill Descent Control
light comes on when the system is
ready for use. When the light
flashes, the system is active.
See Hill Descent Control
(HDC) 0286.
Lane Departure Warning
(LDW) Light (2500/3500
Series)
This light is green if LDW is on and
ready to operate.
This light changes to amber and
flashes to indicate that the lane
marking has been crossed without
using a turn signal in that direction.
See Lane Departure Warning (LDW)
(2500/3500 Series) 0296.
Lane Keep Assist (LKA)
Light (1500 Series)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
170 Lighting
leaves the garage, there is a slight
delay before the automatic
headlamp system changes to the
DRL. During that delay, the
instrument cluster may not be as
bright as usual. Make sure the
instrument panel brightness control
is in the full bright position. See
Instrument Panel Illumination
Control0172.
When it is bright enough outside,
the headlamps will turn off or may
change to Daytime Running
Lamps (DRL).
The automatic headlamp system
turns off when the exterior lamp
control is turned to
Oor the ignition
is off.
Lights On with Wipers
If the windshield wipers are
activated in daylight with the engine
on, and the exterior lamp control is
in AUTO, the headlamps, parking
lamps, and other exterior lamps
come on. The transition time for the
lamps coming on varies based on
wiper speed. When the wipers are not operating, these lamps turn off.
Move the exterior lamp control to
O
or;to disable this feature.
Hazard Warning Flashers
|:
Press this button to make the
front and rear turn signal lamps
flash on and off. Press again to turn
the flashers off.
When the hazard warning flashers
are on, the vehicle's turn signals will
not work.
Turn and Lane-Change
Signals
An arrow on the instrument cluster
flashes in the direction of the turn or
lane change.
Move the turn signal lever all the
way up or down to signal a turn.
Raise or lower the lever for less
than one second until the arrow
starts to flash to signal a lane
change. This causes the turn
signals to automatically flash three
times. It will flash six times if Tow/
Haul Mode is active. Holding the
turn signal lever for more than
one second will cause the turn
signals to flash until the lever is
released.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Index 487
Lamps (cont'd)Messages . . . . . . . . . . . . . . . . . . . . 148
On Reminder . . . . . . . . . . . . . . . . . 140
Reading . . . . . . . . . . . . . . . . . . . . . . 173
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 296
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Lane Keep Assist (LKA) . . . . . . . . 298
Lane Keep Assist Light . . . . . . . . . 136
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 64
Lap-Shoulder Belt . . . . . . . . . . . . . . . 61
LATCH System Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . 94
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 88
LED Lighting . . . . . . . . . . . . . . . . . . . . 373
Light
Hill Decent Control . . . . . . . . . . . 136
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . 174
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Illumination Control . . . . . . . . . . . 172
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 373
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Airbag On-Off . . . . . . . . . . . . . . . . . 130
Airbag Readiness . . . . . . . . . . . . . 130 Lights (cont'd)
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 135
Brake System Warning . . . . . . . 134
Charging System . . . . . . . . . . . . . 132
Cruise Control . . . . . . . . . . . . . . . . 140
Door Ajar . . . . . . . . . . . . . . . . . . . . . 141
Engine Coolant Temperature Warning . . . . . . . 138
Engine Oil Pressure . . . . . . . . . . 139
Flash-to-Pass . . . . . . . . . . . . . . . . . 169
Four-Wheel-Drive . . . . . . . . . . . . . 136
Front Fog Lamp . . . . . . . . . . . . . . 140
High-Beam On . . . . . . . . . . . . . . . . 140
High/Low Beam Changer . . . . . 168
Lane Departure Warning . . . . . . 136
Low Fuel Warning . . . . . . . . . . . . 139
Safety Belt Reminders . . . . . . . . 129
Security . . . . . . . . . . . . . . . . . . . . . . 140
StabiliTrak
®OFF . . . . . . . . . . . . . 137
Tire Pressure . . . . . . . . . . . . . . . . . 138
Tow/Haul Mode . . . . . . . . . . . . . . . 136
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 138
Traction Off . . . . . . . . . . . . . . . . . . . 137
Locking Rear Axle . . . . . . . . . . . . . . 286
Locks Automatic Door . . . . . . . . . . . . . . . . . 35 Locks (cont'd)
Delayed Locking . . . . . . . . . . . . . . . . 35
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Lockout Protection . . . . . . . . . . . . . . 36
Power Door . . . . . . . . . . . . . . . . . . . . . 35
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Loss of Control . . . . . . . . . . . . . . . . . 241
Low Fuel Warning Light . . . . . . . . . 139
Low-Profile Tires . . . . . . . . . . . . . . . . 385
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 88
Lumbar Adjustment . . . . . . . . . . . . . . 52 Front Seats . . . . . . . . . . . . . . . . . . . . . 52
M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 451
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 444
Maintenance Schedule . . . . . . . . . 438 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 447
Transfer Case . . . . . . . . . . . . . . . . 274
Malfunction Indicator Lamp . . . . . 133
Manual Mirrors . . . . . . . . . . . . . . . . . . 41
Manual Mode . . . . . . . . . . . . . . . . . . . 270
Manual Windows . . . . . . . . . . . . . . . . 46
Memory Features . . . . . . . . . . . . . . . . 11