When frequent transmission shifting occurs (such as
when operating the vehicle under heavy loading condi-
tions, in hilly terrain, traveling into strong head winds, or
while towing heavy trailers), use the AutoStick shift
control (refer to AutoStick in this section for further
information) to select a lower gear. Under these condi-
tions, using a lower gear will improve performance and
extend transmission life by reducing excessive shifting
and heat buildup.
During cold temperatures, transmission operation may
be modified depending on engine and transmission
temperature as well as vehicle speed. This feature im-
proves warm up time of the engine and transmission to
achieve maximum efficiency. Engagement of the torque
converter clutch is inhibited until the transmission fluid
is warm. Normal operation will resume once the trans-
mission temperature has risen to a suitable level.
Transmission Limp Home Mode
Transmission function is monitored electronically for
abnormal conditions. If a condition is detected that could
result in transmission damage, Transmission Limp Home
Mode is activated. In this mode, the transmission may
operate only in certain gears, or may not shift at all.
Vehicle performance may be severely degraded and the
engine may stall. In some situations, the transmission
may not re-engage if the engine is turned off and
restarted. The Malfunction Indicator Light (MIL) may be
illuminated. A message in the instrument cluster will
inform the driver of the more serious conditions, and
indicate what actions may be necessary.
5
STARTING AND OPERATING 437
Cavity Cartridge Fuse Micro FuseDescription
F60–15 Amp BlueTransmission Control Module
F61–10 Amp Red Transmission Control Module/PM Sensor
(Diesel engine only)
F62–10 Amp RedAir Conditioning Clutch
F63–20 Amp Yellow Ignition Coils (Gas), Urea Heater (Diesel)
F64–25 Amp ClearFuel Injectors / Powertrain
F66–10 Amp Red Sunroof / Passenger Window Switches /
Rain Sensor
F67–15 Amp Blue CD / DVD / Bluetooth Hands-free Module -
If Equipped
F68–20 Amp YellowRear Wiper Motor
F69–15 Amp BlueSpotlight Feed - If Equipped
F70–20 Amp YellowFuel Pump Motor
F71–30 Amp GreenAudio Amplifier
F73–15 Amp BlueHID Headlamp RH - If Equipped
630 MAINTAINING YOUR VEHICLE
