At approximately 265°F
(1
30"C), the message center
will display a TRANSMISSION HOT message and
the transmission will enter a transmission protection
mode. When the transmission enters the protection
mode, you may notice a change
in
the transmission
shifting patterns. The transmission will return to normal
shifting patterns when the transmission fluid temperature
falls below 260°F (127°C).
See
Driver Information Center (DIC) on page
3-52
for
further information.
If the transmission fluid reaches temperatures
of
approximately 275°F (135°C) or greater, the Driver
Information Center will display a TRANS HOT IDLE
ENG warning message. Pull the vehicle
off
the roadway
when it is safe to do
so.
Set the parking brake, place
the transmission in
PARK
(P) and allow the engine
to idle until the transmission temperature falls below
260°F (127°C).
If
the transmission continues to operate
above 265°F
(1
30"C), contact your nearest dealer or
the
GM
Roadside Assistance Center. See
Roadside
Assistance Program
on
page
7-6.
Notice:
If
you keep driving your vehicle with the
transmission temperature gage above the normal
operating range, you can damage the transmission.
This could lead to costly repairs that may not be
covered under
pur
warranty.
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 (if equipped).
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
6-5
for the proper transmission maintenance
intervals.
3-45
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