Light; Four-Wheel-Drive Light; Hill Descent Control Light; Lane Keep Assist (Lka) Light - GMC Yukon 2023 Owner's Manual

116 Instruments and Controls
Antilock Brake System (ABS)
Warning Light
This light comes on briefly when the vehicle
is turned on to show that the light is
working. If it does not come on then, have
it fixed so it will be ready to warn you if
there is a problem.
If the ABS warning light stays on, or comes
on again while driving, the vehicle needs
service. A chime may also sound when the
light stays on.
If the ABS warning light is the only light on,
the vehicle has regular brakes, but ABS is
not functioning.
If both the ABS warning light and the brake
system warning light are on, ABS is not
functioning and there is a problem with the
regular brakes. See your dealer for service.
See Brake System Warning Light 0 115.

Four-Wheel-Drive Light

Auto Mode Shown, Other Modes Similar
If equipped, the four-wheel-drive light
displays what mode the vehicle is in. The
light will show each mode: 2WD, 4HI, AUTO
(all transfer cases); 4LOW and N (two-speed
transfer case only).
The light will flash when a shift is in
progress. Once the shift is complete the
light will be steady.
If the light turns amber, there may be a
malfunction with the four-wheel-drive
system. See your dealer.
See Four-Wheel Drive 0 208.

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) 0 216.

Lane Keep Assist (LKA) Light

If equipped, the Lane Keep Assist Light may
display the following colors:
Blank: LKA is disabled.
White: Appears when the vehicle starts.
A steady white light indicates that LKA is
not ready to assist.