GMC 2002 Envoy Owner's Manual page 173

CHECK OIL LEVEL
If the oil level in the vehicle is low this message will
appear on the DIC. Check the oil level and correct it as
necessary. You may need to need to let the vehicle cool
or warm up and cycle the ignition to be sure this
message will clear. Once the problem is corrected,
pressing the select button will clear this message from
the DIC display.
CHECK WASHER FLUID
If the washer fluid level is low this message will appear
on the DIC. Adding washer fluid will clear the message.
Pressing the select button will acknowledge this
message and clear it from the DIC display.
TRANS HOT IDLE ENGINE
If the transmission fluid in the vehicle gets hot this
message will appear on the DIC. Driving with the
transmission fluid temperature high can cause damage to
the vehicle. Stop the vehicle and let it idle to allow the
transmission to cool. This message will clear when the
fluid temperature reaches a safe level.
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ICE POSSIBLE
If the outside temperature reaches a level where ice
could form on the roadway, this message may appear
on the DIC. If the temperature rises to a safe level the
message will clear. Pressing the select button will
acknowledge this message and clear it from the
DIC display.
DRIVER DOOR AJAR
If the driver's door is not fully closed this message will
appear on the display and you will hear a chime. Stop
and turn off the vehicle, check the door for obstacles,
and close the door again. Check to see if the message
still appears on the DIC. Pressing the select button
will acknowledge this message and clear it from the
DIC display.