GMC Yukon 2021 - Four Corner Air Suspension Light; Tire Pressure Light

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - CRC - 2/18/20
116 Instruments and Controls
This light comes on when Terrain Mode is
selected.
This light comes on when Off-Road Mode is
selected.
This light comes on when the Tow/Haul
Mode is selected.
Four Corner Air Suspension Light
This light comes on when the air suspension
is raised to maximum ground clearance
height.
This light comes on when the air suspension
is raised to increased ground clearance
height.
It will flash green and give an alert to
indicate that the vehicle is changing to a
higher ride height.
This light comes on when the air suspension
is lowered for easy entry and exit from the
vehicle.
It will flash green and give an alert to
indicate that the vehicle is changing to a
lower ride height.
This light comes on when the air suspension
is in Service Mode or Alignment Mode.
See Four Corner Air Suspension System
0 248.
Tire Pressure Light
For vehicles with the Tire Pressure Monitor
System (TPMS), this light comes on briefly
when the engine is started. It provides
information about tire pressures and
the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires
are significantly underinflated.