Antilock Brake System (Abs); Warning Light; Four-Wheel-Drive Light; Tow/Haul Mode Light - GMC 2013 Sierra Denali Owner's Manual

Antilock Brake System
(ABS) Warning Light
For vehicles with the Antilock Brake
System (ABS), this light comes on
briefly when the engine is started.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light then goes off.
If the ABS light stays on, turn the
ignition off. If the light comes on
while driving, stop as soon as it is
safely possible and turn the ignition
off. Then start the engine again to
reset the system. If the ABS light
stays on, or comes on again while
driving, the vehicle needs service.
If the regular brake system warning
light is not on, the vehicle still has
brakes, but not antilock brakes.
If the regular brake system warning
light is also on, the vehicle does not
have antilock brakes and there is a
problem with the regular brakes.
See
.

Four-Wheel-Drive Light

For vehicles equipped with the
four-wheel-drive light, it comes on
when a vehicle with a manual
transfer case is shifted into
four-wheel drive and the front axle
engages.
Some delay between the shifting
and the light coming on is normal.
See
for more information.
Instruments and Controls

Tow/Haul Mode Light

For vehicles with the Tow/Haul
Mode feature, this light comes on
when the Tow/Haul Mode has been
activated.
For more information, see
®
StabiliTrak
This light comes on briefly while
starting the engine.
5-23
.
OFF Light