Tighten Fuel Cap; Traction Active; Transmission Hot - GMC YUKON XL 2004 Owner's Manual

TIGHTEN FUEL CAP

If the vehicle's fuel cap is not tightened properly this
message may appear along with the check engine light
on the instrument panel. Reinstall the fuel cap,
making sure to fully install the cap. See Filling Your
Tank on page 5-8. The diganostic system can determine
if the fuel cap has been left off or improperly installed.
A loose or missing fuel cap will allow fuel to evaporate
into the atmosphere. A few driving trips with the cap
properly installed should turn the light and message off.

TRACTION ACTIVE

When the traction control system has detected that any
of the vehicle's wheels are spinning, the traction
control system will activate and this message will appear
on the DIC. For more information see Traction Assist
System (TAS) on page 4-9.

TRANSMISSION HOT

If the transmission fluid temperature becomes high, the
message center will display this message.
When the transmission enters the protection mode, you
may notice a change in the transmission shifting
patterns. When the transmission fluid temperature
returns to normal, the display will turn off and the
transmission shifting patterns will return to normal.
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Notice: If you drive your vehicle while the
transmission fluid is overheating and the
transmission temperature warning is displayed on
the instrument panel cluster and/or DIC, you
can damage the transmission. This could lead to
costly repairs that would not be covered by
your warranty. Do not drive your vehicle with
overheated transmission fluid or while transmission
temperature warning is displayed.
The following situations can cause the transmission to
operate at higher temperatures:
•
Towing a trailer
•
Hot outside air temperatures
•
Hauling a large or heavy load
•
Low transmission fluid level
•
High transmission fluid level
•
Restricted air flow to the radiator and the auxiliary
transmission oil cooler.
A temporary solution to hotter transmission operating
temperatures may be to let the transmission cool down.
If the transmission is operated at higher temperatures
on a frequent basis, see Scheduled Maintenance
on page 6-4 for the proper transmission maintenance
intervals.