GMC 2010 Yukon XL Denali Owner's Manual page 258

TIGHTEN GAS CAP
This message may display along with the check engine
light on the instrument panel cluster if the vehicle's fuel
cap is not tightened properly. See Malfunction Indicator
Lamp on page 4 35. Reinstall the fuel cap fully.
See Filling the Tank on page 6 9. The diagnostic
system can determine if the fuel cap has been left off or
improperly installed. A loose or missing fuel cap allows
fuel to evaporate into the atmosphere. A few driving
trips with the cap properly installed should turn this light
and message off.
TIRE LEARNING ACTIVE
On vehicles with the Tire Pressure Monitor System
(TPMS), this message displays when the TPMS is
re-learning the tire positions on your vehicle. The tire
positions must be re-learned after rotating the tires or
after replacing a tire or sensor. See Tire Inspection and
Rotation on page 6 71, Tire Pressure Monitor System
on page 6 66, and Inflation - Tire Pressure on
page 6 64 for more information.
4-64
TIRE LOW ADD AIR TO TIRE
On vehicles with the Tire Pressure Monitor System
(TPMS), this message displays when the pressure in
one or more of the vehicle's tires needs to be checked.
This message also displays LEFT FRT (left front),
RIGHT FRT (right front), LEFT RR (left rear), or
RIGHT RR (right rear) to indicate the location of the low
tire. The low tire pressure warning light will also come
on. See Tire Pressure Light on page 4 34.
You can receive more than one tire pressure message
at a time. To read the other messages that may have
been sent at the same time, press the set/reset button
or the trip odometer reset stem. If a tire pressure
message appears on the DIC, stop as soon as you can.
Have the tire pressures checked and set to those
shown on the Tire Loading Information label. See Tires
on page 6 57, Loading the Vehicle on page 5 31, and
Inflation - Tire Pressure on page 6 64. The DIC also
shows the tire pressure values. See DIC Operation and
Displays (Using DIC Buttons) earlier in this section.
TRACTION CONTROL OFF
If your vehicle has StabiliTrak, this message displays
when the Traction Control System (TCS) is turned off.
Adjust your driving accordingly. See StabiliTrak
System on page 5 6 for more information.
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