Hummer 2007 H2 Owner's Manual page 228

ENGINE COOLANT HOT
This message displays if the cooling system
temperature gets hot. Turn off the air conditioning.
If the message is still on, or if the engine coolant
temperature gage continues to rise, pull the vehicle
over when it is safe to do so. See Engine
Coolant Temperature Gage on page 213 for more
information. Stop the vehicle and let the engine
idle in PARK (P) for a few minutes to allow
the coolant to reach a safe temperature. This
message clears when the coolant temperature
drops to a safe operating temperature. Press any
of the DIC buttons, or the trip stem, to
acknowledge this message and clear it from the
DIC display.
ENGINE OVERHEATED
This message displays and a chime sounds if the
engine cooling system reaches unsafe
temperatures for operation. Stop and turn off the
vehicle as soon as it is safe to do so to avoid
severe damage. This message clears when the
engine has cooled to a safe operating temperature.
228
FUEL LEVEL LOW
This message displays and a chime sounds if the
fuel level is low. Refuel as soon as possible.
Press any of the DIC buttons, or the trip stem, to
acknowledge this message and clear it from
the DIC display. This message also clears itself
after 10 seconds. The low fuel light near the
fuel gage still remains on in either case. See Low
Fuel Warning Light on page 221, Fuel Gage on
page 221, and Fuel on page 394 for more
information.
KEYFOB X BATTERY LOW
This message displays if a Remote Keyless
Entry (RKE) transmitter battery is low. Replace
the battery in the transmitter. See "Battery
Replacement" under Remote Keyless Entry (RKE)
System Operation on page 97. Press any of the
DIC buttons, or the trip stem, to acknowledge this
message and clear it from the DIC display.