GMC 2010 Sierra - Manual (Page 298)

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 4‑42. Reinstall the fuel cap fully. See
Filling the Tank on page 6‑12. 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
If your vehicle has the Tire Pressure Monitor System
(TPMS), this message displays when the system is
re-learning the tire positions on your vehicle. See “DIC
Operation and Displays (Without DIC Buttons)” earlier in
this section for more information. 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 6‑88, Tire Pressure Monitor System on
page 6‑83, and Inflation - Tire Pressure on page 6‑80
for more information.
TIRE LOW ADD AIR TO TIRE
If your vehicle has the Tire Pressure Monitor System
(TPMS), this message displays when the pressure in
one or more of the vehicle's tires is low. 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 4‑41. 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 6‑70, Loading the
Vehicle on page 5‑33, and Inflation - Tire Pressure on
page 6‑80. The DIC also shows the tire pressure
values. See “DIC Operation and Displays (With DIC
Buttons)” earlier in this section.
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