At approximately 265°F (130°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 (125°C).
See
Driver Information Center (DIC) on page 186
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 ENGINE warning message, and a chime will
sound. 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 (125°C). If the transmission continues
to operate above 265°F (130°C), contact your
nearest dealer or the GM Roadside Assistance
Center. See
Roadside Assistance Program
on page 474
.
Notice:
If you drive your vehicle with the
transmission temperature gage above normal
operating range, you can damage the
transmission. This could lead to costly repairs
that would not be covered by your warranty.
Do not drive your vehicle while the
transmission temperature gage reading is
above normal. See your dealer for service.
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 449
for the proper transmission maintenance intervals.
179
Summary of Contents for Sierra Denali Classic 2007
Page 6: ...These are some examples of symbols that may be found on the vehicle 6 ...
Page 82: ... NOTES 82 ...
Page 141: ... NOTES 141 ...
Page 142: ...Instrument Panel Overview 142 ...
Page 320: ... NOTES 320 ...
Page 440: ...440 ...
Page 463: ...Engine Drive Belt Routing A Air Conditioning Compressor 463 ...