Chevrolet Silverado 4500HD/5500HD/6500HD Owner Manual (GMNA-
Localizing-U.S.-12102101) - 2019 - crc - 10/2/18
Driving and Operating
235
Ride Control Systems
Traction Control
System (TCS)
System Operation
The vehicle has a Traction Control
System (TCS).. This system helps
limit wheel spin and assist the driver
in maintaining control, especially on
slippery road conditions.
TCS activates if it senses any of the
drive wheels are spinning or
beginning to lose traction. When this
happens, TCS applies the brakes to
the spinning wheel(s) and reduces
engine power to limit wheel spin.
If cruise control is being used and
traction control begins to limit wheel
spin, cruise control will disengage.
Cruise control may be turned back
on when road conditions allow.
TCS comes on automatically when
the vehicle is started and begins to
move. The system may be heard or
felt while operating or while
performing diagnostic checks. This
is normal and does not mean there
is a problem with the vehicle.
It is recommended to leave TCS on
for normal driving conditions, but it
may be necessary to turn TCS off if
the vehicle gets stuck in sand, mud,
ice, or snow. See
and
“
Turning the
Systems Off and On
”
later in this
section.
The indicator light for TCS is in the
instrument cluster. This light will:
.
Flash when TCS is limiting
wheel spin
.
Turn on and stay on when TCS
is not working
If TCS fails to turn on or to activate,
a message displays in the Driver
Information Center (DIC), and
d
comes on and stays on to indicate
that the system is inactive and is not
assisting the driver in maintaining
control. The vehicle is safe to drive,
but driving should be adjusted
accordingly
If
d
comes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait
15 seconds.
3. Start the engine.
Drive the vehicle. If
d
comes on
and stays on, the vehicle may need
more time to diagnose the problem.
If the condition persists, see your
dealer.
Turning the System Off and On
The button for TCS is on the center
stack.