Page 68 of 170

The “TOW/HAUL Indicator Light” will illuminate in the
instrument cluster to indicate when the switch has been
activated. If the “TOW/HAUL” modes are desired, the
button must be pressed each time the engine is started.
Torque Converter Clutch
A feature designed to improve fuel economy has been
included in the automatic transmission on your vehicle.
A clutch within the torque converter engages automati-
cally at calibrated speeds. This may result in a slightly
different feeling or response during normal operation in
the upper gears. When the vehicle speed drops or during
acceleration when the transmission downshifts to second
gear, the clutch automatically disengages.
NOTE:
•The torque converter clutch will not engage, and the
transmission will not shift to sixth gear, until the
transmission fluid and engine coolant are warm [usu-
ally after 1-3 miles (1.6 - 4.8 km) of driving]. Because
sixth gear is disabled, and engine speed is higher
when the torque converter clutch is not engaged, it
may seem as if the transmission is not shifting prop-
erly when cold. This is normal. Using the Electronic
Range Select (ERS) feature, when the transmission is
TOW/HAUL Switch
4
STARTING AND OPERATING 67
Page 69 of 170

sufficiently warm, will demonstrate that the transmis-
sion is able to shift into and out of Overdrive.
•If the vehicle has not been driven in several days, the
first few seconds of operation after shifting the trans-
mission into gear may seem sluggish. This is due to the
fluid partially draining from the torque converter into
the transmission. This condition is normal and will not
cause damage to the transmission. The torque con-
verter will refill within five seconds of shifting from
PARK into any other gear position.
Automatic Transmission with Overdrive (AS68RC)
– If Equipped (Chassis Cab Only)
The shift lever display located in the instrument panel
cluster, indicates the transmission gear range (the selector
is illuminated for night driving). The shift lever is
mounted on the right side of the steering column. You
must press the brake pedal to pull the shift lever out of
PARK position (Brake Interlock System). To drive, movethe shift lever from PARK or NEUTRAL to the desired
DRIVE position. Pull the shift lever toward you when
shifting into REVERSE or PARK.
Electronic Range Select (ERS) Operation
The Electronic Range Select (ERS) shift control allows
you to move the switch down (-) or up (+) when the
shifter is in the D (Drive) position, allowing the selection
of the desired top gear. For example, if the driver shifts
the transmission into third gear, the transmission will
never shift above third gear, but can shift down into
second or first gear, when needed.
68 STARTING AND OPERATING
Page 70 of 170
Switching from ERS to D-Mode can be done at any
vehicle speed. To switch from “Drive” mode to “ERS”
mode, press the switch down (-) once. The current gear
will be maintained as the top gear. To disable ERS, simply
press and hold the switch up (+) until “D” is displayed in
the instrument cluster odometer.
WARNING!
Do not downshift for additional engine braking on a
slippery surface. The drive wheels could lose their
grip and the vehicle could skid.
Screen Display12345D
Actual Gear(s)
Allowed 1 1-2 1-3 1-4 1-5 1-6
NOTE: To select the proper gear position for maximum
deceleration (engine braking), simply press and hold the
switch down (-). The transmission will shift to the range
from which the vehicle can best be slowed down.
Gear Ranges
DO NOT race the engine when shifting from PARK or
NEUTRAL position into another gear range.
Column Shift Lever
4
STARTING AND OPERATING 69
Page 74 of 170

The “TOW/HAUL Indicator Light” will illuminate in the
instrument cluster to indicate when the switch has been
activated. If the “TOW/HAUL” mode is desired, the
switch must be pressed each time the engine is started.
WARNING!
Do not use the “TOW/HAUL” feature when driving
in icy or slippery conditions. The increased engine
braking can cause the rear wheels to slide, and the
vehicle to swing around with the possible loss of
vehicle control, which may cause an accident possi-
bly resulting in personal injury or death.
Torque Converter Clutch
A feature designed to improve fuel economy has been
included in the automatic transmission on your vehicle.
A clutch within the torque converter engages automati-
cally at calibrated speeds. This may result in a slightly
different feeling or response during normal operation in
high gear. When the vehicle speed drops or during
acceleration when the transmission downshifts to first or
second gear, the clutch automatically disengages.
TOW/HAUL Switch
4
STARTING AND OPERATING 73
Page 166 of 170

Oil Pressure........................... 13
Speedometer .......................... 12
Tachometer ........................... 11
Voltmeter .......................... 14,49
Gear Ranges ........................ 64,69,75
Idle Up Feature .......................... 53
Information Center, Vehicle ................. 21
Instrument Cluster ...................... 10,11
Intervention Regeneration Strategy ........... 109
Jump Starting ........................... 90
Lights Airbag .............................. 19
Anti-Lock ............................ 19
Brake Warning ......................... 14
Check Engine (Malfunction Indicator) ........ 18
Electronic Stability Program (ESP) Indicator .... 20Fog ................................. 19
High Beam
........................... 14
High Beam Indicator .................... 14
Instrument Cluster ...................... 11
Seat Belt Reminder ...................... 20
Tire Pressure Monitoring (TPMS) ............ 16
Traction Control ........................ 20
Warning (Instrument Cluster Description) ...... 11
Locks Steering Wheel ......................... 6
Maintenance Procedures .................... 98
Maintenance Schedule .................... 136
Manual Transmission ...................... 74
Fluid Level Check ..................... 121
Lubricant Selection ..................... 133
Shift Speeds ........................... 75
Mini-Trip Computer ...................... 30
8
INDEX 165
Page 169 of 170
Shifting.............................. 60
Trip Odometer .......................... 13
Turn Signals ............................ 11
Variance, Compass ....................... 33 Viscosity, Engine Oil
...................... 100
Voltmeter ............................ 14,49
Warning Lights (Instrument Cluster Description) . . 11
Water Separator, Diesel Fuel ................ 104
168 INDEX